
                                       UNITED STATES
                           SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C.  20549


                                        FORM 8-K


                     Current Report Pursuant To Section 13 or 15(d) of
                            the Securities Exchange Act of 1934

           Date of Report (Date of earliest event reported):  October 25, 2005
                          (Date of earliest event reported)

            Indymac MBS, Inc. (as Depositor under the Pooling and Servicing
                Agreement, dated as June 1, 2005, providing for the
               issuance of IndyMac INDX Mortgage Loan Trust 2005-AR13
                Mortgage Pass-Through Certificates, Series 2005-AR13)
                 (Exact name of registrant as specified in charter)


                                         DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-31                         95-4791925
          (Commission File Number)        (I.R.S. Employer Identification No.)


          155 NORTH LAKE AVENUE
          PASADENA, CALIFORNIA                         91101
          (Address of principal executive offices)     (Zip Code)



          Registrant's Telephone Number, Including Area Code:  (800) 669-2300

       (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any
of the following provisions (see General Instruction A.2. below):

[  ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

[  ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act
(17 CFR 240.14a-12(b))

[  ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))


     Item 8.01  Other Events

     Attached hereto is a copy of the Monthly Remittance Statements to the
     Certificateholders which was derived from the monthly information
     submitted by the Master Servicer of the Trust to the Trustee.


     Item 9.01 Financial Statements and Exhibits

     (c) Exhibits:

     Exhibit No. Description

     99.1 Monthly Remittance Statement to the Certificateholders dated as of
     October 25, 2005.

                                    Signatures

               Pursuant to the requirements of the Securities Exchange Act of
          1934, the Registrant has duly caused this report to be signed on its
          behalf by the undersigned, hereunto duly authorized.


                                  Deutsche Bank National Trust Company,
                                  in its capacity as Trustee under the
                                  Pooling and Servicing Agreement on
                                  behalf of Indymac MBS, Inc., Registrant


          Date:  Oct 28, 2005               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of October 25, 2005.



IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

				External Parties						Table of Contents

													Page
				Seller									Page
				Seller						1. Certificate Payment Report					2
				IndyMac Bank						1. Certificate Payment Report					2
				IndyMac Bank						2. Collection Account Report					6
										2. Collection Account Report					6
										3. Credit Enhancement Report					11
										4. Collateral Report					12
				Certificate Insurer(s)						5. Delinquency Report					19
				Certificate Insurer(s)						5. Delinquency Report					19
										6. REO Report					25

										7. Foreclosure Report					26
										8. Prepayment Report					27
										9. Prepayment Detail Report					32
										9. Prepayment Detail Report					32
										10. Realized Loss Report					34
										11. Realized Loss Detail Report					39
				Servicer(s)						11. Realized Loss Detail Report					39
				Servicer(s)						12. Triggers and Adj. Cert. Report					40
				IndyMac Bank						12. Triggers and Adj. Cert. Report					40
				IndyMac Bank						13. Other Related Information					42
										13. Other Related Information					42


				Underwriter(s)
				Deutsche Bank Securities


										Total Number of Pages					43
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			June 01, 2005			Brent Hoyler
				Close Date:			June 29, 2005			Administrator
				First Distribution Date:			July 25, 2005			(714) 247-6322
										Brent.Hoyler@db.com
										Brent.Hoyler@db.com
										Address:
										1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:			October 25, 2005
										Factor Information:			(800) 735-7777
				Record Date:			September 30, 2005			Factor Information:			(800) 735-7777
										Main Phone Number:			(714) 247-6000
										Main Phone Number:			(714) 247-6000

										https://www.tss.db.com/invr






Page 1 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Certificate Payment Report
Current Period Distribution -
					Prior												Current
	Class		Original		Principal						Total		Realized		Deferred		Principal
	Class		Original		Principal						Total		Realized		Deferred		Principal
Class	Type	Cur	Face Value		Balance		Interest		Principal		Distribution		Loss		Interest		Balance


					(1)		(2)		(3)		(4)=(2)+(3)		(5)		(6)		(7)=(1)-(3)-(5)+(6)

1-A-1	SR	$	150,598,000.00		143,143,043.26		543,801.72		5,104,320.19		5,648,121.91		0.00		0.00		138,038,723.07
1-A-1	SR	$	150,598,000.00		143,143,043.26		543,801.72		5,104,320.19		5,648,121.91		0.00		0.00		138,038,723.07
1-X	NTL	$	0.00		0.00		110,542.22		0.00		110,542.22		0.00		0.00		0.00
2-A-1	SR	$	68,309,000.00		62,297,862.05		232,059.69		4,481,593.96		4,713,653.65		0.00		0.00		57,816,268.09
2-A-2	SR	$	7,590,000.00		6,922,086.00		25,784.79		497,962.17		523,746.96		0.00		0.00		6,424,123.83
2-X	NTL	$	0.00		0.00		68,279.71		0.00		68,279.71		0.00		0.00		0.00
3-A-1	SR	$	36,806,000.00		31,791,697.33		135,710.77		1,809,000.79		1,944,711.56		0.00		0.00		29,982,696.54
3-A-2	SR	$	4,089,000.00		3,531,930.94		15,076.93		200,972.78		216,049.71		0.00		0.00		3,330,958.16
3-X	NTL	$	0.00		0.00		37,681.48		0.00		37,681.48		0.00		0.00		0.00
4-A-1	SR	$	278,372,000.00		263,426,665.16		1,191,114.61		6,042,008.41		7,233,123.02		0.00		0.00		257,384,656.75
4-A-2	SR	$	30,930,000.00		29,269,419.16		122,566.69		671,329.44		793,896.13		0.00		0.00		28,598,089.72
4-X	NTL	$	0.00		0.00		9,778.43		0.00		9,778.43		0.00		0.00		0.00
5-A-1	SR	$	78,441,000.00		74,714,416.63		318,847.63		1,179,598.89		1,498,446.52		0.00		0.00		73,534,817.74
5-A-2	SR	$	13,843,000.00		13,185,345.28		61,009.27		208,171.59		269,180.86		0.00		0.00		12,977,173.69
5-X	NTL	$	0.00		0.00		26,859.83		0.00		26,859.83		0.00		0.00		0.00
A-R	RES	$	100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	SUB	$	19,859,000.00		19,831,434.07		91,596.04		2,200.15		93,796.19		0.00		0.00		19,829,233.92
B-2	SUB	$	11,913,000.00		11,896,463.78		54,946.56		1,319.83		56,266.39		0.00		0.00		11,895,143.95
B-3	SUB	$	7,581,000.00		7,570,476.95		34,965.99		839.89		35,805.88		0.00		0.00		7,569,637.06
B-4	SUB	$	5,776,000.00		5,767,982.44		26,640.75		639.92		27,280.67		0.00		0.00		5,767,342.52
B-5	SUB	$	4,693,000.00		4,686,485.74		21,645.61		519.93		22,165.54		0.00		0.00		4,685,965.81
B-6	SUB	$	3,251,796.00		3,247,281.75		14,998.32		360.26		15,358.58		0.00		0.00		3,246,921.49
P	P	$	100.00		100.00		0.00		0.00		0.00		0.00		0.00		100.00


Total			722,051,996.00		681,282,690.54		3,143,907.04		20,200,838.20		23,344,745.24		0.00		0.00		661,081,852.34
Total





Page 2 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-
									Orig. Principal		Prior							Current
									Orig. Principal		Prior							Current
	Period		Period						(with Notional)		Principal						Total	Principal
	Period		Period
Class	Starting		Ending		Method		Cusip		Balance		Balance		Interest		Principal		Distribution	Balance

									(1)		(1)		(2)		(3)		(4)=(2)+(3)	(5)
1-A-1	09/01/05		09/30/05		A-30/360		45660LQW2		150,598,000.00		950.497638		3.610949		33.893678		37.504628	916.603959
1-X	09/01/05		09/30/05		A-30/360		45660LQX0		150,598,000.00		950.497638		0.734022		0.000000		0.734022	916.603959
2-A-1	09/01/05		09/30/05		A-30/360		45660LQY8		68,309,000.00		912.000791		3.397205		65.607665		69.004870	846.393127
2-A-2	09/01/05		09/30/05		A-30/360		45660LQZ5		7,590,000.00		912.000791		3.397206		65.607664		69.004870	846.393126
2-X	09/01/05		09/30/05		A-30/360		45660LRA9		75,899,000.00		912.000791		0.899613		0.000000		0.899613	846.393127
3-A-1	09/01/05		09/30/05		A-30/360		45660LRB7		36,806,000.00		863.763988		3.687191		49.149617		52.836808	814.614371
3-A-2	09/01/05		09/30/05		A-30/360		45660LRC5		4,089,000.00		863.763986		3.687192		49.149616		52.836809	814.614370
3-X	09/01/05		09/30/05		A-30/360		45660LRD3		40,895,000.00		863.763988		0.921420		0.000000		0.921420	814.614371
4-A-1	09/01/05		09/30/05		A-30/360		45660LRE1		278,372,000.00		946.311645		4.278859		21.704799		25.983659	924.606845
4-A-2	09/01/05		09/30/05		A-30/360		45660LRF8		30,930,000.00		946.311644		3.962712		21.704799		25.667511	924.606845
4-X	09/01/05		09/30/05		A-30/360		45660LRG6		30,930,000.00		946.311644		0.316147		0.000000		0.316147	924.606845
5-A-1	09/01/05		09/30/05		A-30/360		45660LRH4		78,441,000.00		952.491894		4.064808		15.038040		19.102848	937.453854
5-A-2	09/01/05		09/30/05		A-30/360		45660LRJ0		13,843,000.00		952.491893		4.407229		15.038040		19.445269	937.453853
5-X	09/01/05		09/30/05		A-30/360		45660LRK7		78,441,000.00		952.491894		0.342421		0.000000		0.342421	937.453854
A-R	09/01/05		09/30/05		A-30/360		45660LRL5		100.00		0.000000		0.000000		0.000000		0.000000	0.000000
B-1	09/01/05		09/30/05		A-30/360		45660LRM3		19,859,000.00		998.611918		4.612319		0.110789		4.723107	998.501129
B-2	09/01/05		09/30/05		A-30/360		45660LRN1		11,913,000.00		998.611918		4.612319		0.110789		4.723108	998.501129
B-3	09/01/05		09/30/05		A-30/360		45660LRP6		7,581,000.00		998.611918		4.612319		0.110789		4.723108	998.501129
B-4	09/01/05		09/30/05		A-30/360		45660LRQ4		5,776,000.00		998.611918		4.612318		0.110789		4.723108	998.501129
B-5	09/01/05		09/30/05		A-30/360		45660LRR2		4,693,000.00		998.611920		4.612318		0.110788		4.723107	998.501131
B-6	09/01/05		09/30/05		A-30/360		45660LRS0		3,251,796.00		998.611767		4.612319		0.110788		4.723107	998.500979
P	09/01/05		09/30/05		A-30/360		45660LRT8		100.00		1,000.000000		0.000000		0.000000		0.000000	1,000.000000




Page 3 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

Distribution to Date -
																	Current


	Original				Unscheduled		Scheduled		Total		Total		Realized		Deferred		Principal

Class	Face Value		Interest		Principal		Principal		Principal		Distribution		Loss		Interest		Balance
	(1)		(2)		(3)		(4)		(5)=(3)+(4)		(6)=(2)+(5)		(7)		(8)		(9)=(1)-(5)-(7)+(8)
1-A-1	150,598,000.00		2,238,477.69		12,206,568.78		352,708.15		12,559,276.93		14,797,754.62		0.00		0.00		138,038,723.07
1-X	0.00		454,369.00		0.00		0.00		0.00		454,369.00		0.00		0.00		0.00
2-A-1	68,309,000.00		976,482.66		10,385,177.99		107,553.92		10,492,731.91		11,469,214.57		0.00		0.00		57,816,268.09
2-A-2	7,590,000.00		108,499.66		0.00		0.00		1,165,876.17		1,274,375.83		0.00		0.00		6,424,123.83
2-X	0.00		286,767.05		0.00		0.00		0.00		286,767.05		0.00		0.00		0.00
3-A-1	36,806,000.00		585,480.78		6,748,573.60		74,729.86		6,823,303.46		7,408,784.24		0.00		0.00		29,982,696.54
3-A-2	4,089,000.00		65,044.59		749,739.65		6,073,563.81		758,041.84		823,086.43		0.00		0.00		3,330,958.16
3-X	0.00		162,731.68		0.00		0.00		0.00		162,731.68		0.00		0.00		0.00
4-A-1	278,372,000.00		4,922,618.38		20,374,892.05		612,451.20		20,987,343.25		25,909,961.63		0.00		0.00		257,384,656.75
4-A-2	30,930,000.00		506,570.70		0.00		617,073.43		2,331,910.28		2,838,480.98		0.00		0.00		28,598,089.72
4-X	0.00		40,382.97		0.00		0.00		0.00		40,382.97		0.00		0.00		0.00
5-A-1	78,441,000.00		1,308,201.82		4,792,233.01		113,949.25		4,906,182.26		6,214,384.08		0.00		0.00		73,534,817.74
5-A-2	13,843,000.00		250,318.49		845,716.93		20,109.38		865,826.31		1,116,144.80		0.00		0.00		12,977,173.69
5-X	0.00		110,221.44		0.00		0.00		0.00		110,221.44		0.00		0.00		0.00
A-R	100.00		0.46		0.00		0.00		100.00		100.46		0.00		0.00		0.00
B-1	19,859,000.00		366,858.23		0.00		29,766.08		29,766.08		396,624.31		0.00		0.00		19,829,233.92
B-2	11,913,000.00		220,070.59		0.00		17,856.05		17,856.05		237,926.64		0.00		0.00		11,895,143.95
B-3	7,581,000.00		140,044.93		0.00		11,362.94		11,362.94		151,407.87		0.00		0.00		7,569,637.06
B-4	5,776,000.00		106,700.90		0.00		8,657.48		8,657.48		115,358.38		0.00		0.00		5,767,342.52
B-5	4,693,000.00		86,694.47		0.00		7,034.19		7,034.19		93,728.66		0.00		0.00		4,685,965.81
B-6	3,251,796.00		60,070.91		0.00		4,874.51		4,874.51		64,945.42		0.00		0.00		3,246,921.49
P	100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		100.00


Total	722,051,996.00		12,996,607.40		56,102,902.01		8,051,690.25		60,970,143.66		73,966,751.06		0.00		0.00		661,081,852.34



Page 4 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

Interest Detail -
	Pass		Prior Principal				Non-		Prior		Unscheduled				Paid or		Current
	Pass		Prior Principal				Non-		Prior		Unscheduled				Paid or

	Through		(with Notional)		Accrued		Supported		Unpaid		Interest		Optimal		Deferred		Unpaid

Class	Rate		Balance		Interest		Interest SF		Interest		Adjustment		Interest		Interest		Interest
					(1)		(2)		(3)		(4)		(5)=(1)-(2)+(3)+(4)		(6)		(7)=(5)-(6)
1-A-1	4.55881%		143,143,043.26		543,801.72		0.00		0.00		0.00		543,801.72		543,801.72		0.00
1-X	0.92670%		143,143,043.26		110,542.22		0.00		0.00		0.00		110,542.22		110,542.22		0.00
2-A-1	4.47000%		62,297,862.05		232,059.69		0.00		0.00		0.00		232,059.69		232,059.69		0.00
2-A-2	4.47000%		6,922,086.00		25,784.79		0.00		0.00		0.00		25,784.79		25,784.79		0.00
2-X	1.18370%		69,219,948.05		68,279.71		0.00		0.00		0.00		68,279.71		68,279.71		0.00
3-A-1	5.12250%		31,791,697.33		135,710.77		0.00		0.00		0.00		135,710.77		135,710.77		0.00
3-A-2	5.12250%		3,531,930.94		15,076.93		0.00		0.00		0.00		15,076.93		15,076.93		0.00
3-X	1.28010%		35,323,628.27		37,681.48		0.00		0.00		0.00		37,681.48		37,681.48		0.00
4-A-1	5.42594%		263,426,665.16		1,191,114.61		0.00		0.00		0.00		1,191,114.61		1,191,114.61		0.00
4-A-2	5.02504%		29,269,419.16		122,566.69		0.00		0.00		0.00		122,566.69		122,566.69		0.00
4-X	0.40090%		29,269,419.16		9,778.43		0.00		0.00		0.00		9,778.43		9,778.43		0.00
5-A-1	5.12106%		74,714,416.63		318,847.63		0.00		0.00		0.00		318,847.63		318,847.63		0.00
5-A-2	5.55246%		13,185,345.28		61,009.27		0.00		0.00		0.00		61,009.27		61,009.27		0.00
5-X	0.43140%		74,714,416.63		26,859.83		0.00		0.00		0.00		26,859.83		26,859.83		0.00
A-R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	5.54248%		19,831,434.07		91,596.04		0.00		0.00		0.00		91,596.04		91,596.04		0.00
B-2	5.54248%		11,896,463.78		54,946.56		0.00		0.00		0.00		54,946.56		54,946.56		0.00
B-3	5.54248%		7,570,476.95		34,965.99		0.00		0.00		0.00		34,965.99		34,965.99		0.00
B-4	5.54248%		5,767,982.44		26,640.75		0.00		0.00		0.00		26,640.75		26,640.75		0.00
B-5	5.54248%		4,686,485.74		21,645.61		0.00		0.00		0.00		21,645.61		21,645.61		0.00
B-6	5.54248%		3,247,281.75		14,998.32		0.00		0.00		0.00		14,998.32		14,998.32		0.00
P	0.00000%		100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total			1,032,953,145.91		3,143,907.04		0.00		0.00		0.00		3,143,907.04		3,143,907.04		0.00



Page 5 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
														Group 5
Principal Collections														1,388,925.38
Principal Withrawals														0.00
Principal Other Accounts														0.00
TOTAL NET PRINCIPAL														1,388,925.38
Interest Collections														448,630.56
Interest Withdrawals														-0.00
Interest Other Accounts														0.00
Interest Fees														-8,052.86
TOTAL NET INTEREST														440,577.70
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION														1,829,503.08

SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						6,716,717.11		2,010,087.32		4,980,453.12		5,104,655.27		20,200,838.20
Principal Withrawals						0.00		0.00		0.00		0.00		0.00
Principal Other Accounts						0.00		0.00		0.00		0.00		0.00
TOTAL NET PRINCIPAL						6,716,717.11		2,010,087.32		4,980,453.12		5,104,655.27		20,200,838.20
Interest Collections						1,462,764.03		209,862.53		362,731.78		724,088.13		3,208,077.02
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		0.00		0.00		0.00		0.00
Interest Fees						-28,557.16		-4,080.35		-8,247.59		-15,232.02		-64,169.97
TOTAL NET INTEREST						1,434,206.88		205,782.18		354,484.18		708,856.11		3,143,907.05
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						8,150,923.99		2,215,869.50		5,334,937.30		5,813,511.38		23,344,745.25





Page 6 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
															Group 5
Scheduled Principal Received															15,026.80
Curtailments															5,817.77
Prepayments In Full															1,368,080.81
Repurchased/Substitutions															0.00
Liquidations															0.00
Insurance Principal															0.00
Other Additional Principal															0.00
Delinquent Principal															-10,300.07
Realized Losses															-0.00
Principal Recoveries
Advanced Principal															10,300.07
TOTAL PRINCIPAL COLLECTED															1,388,925.38
PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							43,762.31		1,352.02		11,211.83		4,357.29		75,710.25
Curtailments							62,415.39		656.59		10,129.31		7,421.11		86,440.17
Prepayments In Full							6,610,539.41		2,008,078.71		4,959,111.98		5,092,876.87		20,038,687.78
Repurchased/Substitutions							0.00		0.00		0.00		0.00		0.00
Liquidations							0.00		0.00		0.00		0.00		0.00
Insurance Principal							0.00		0.00		0.00		0.00		0.00
Other Additional Principal							0.00		0.00		0.00		0.00		0.00
Delinquent Principal							-34,520.34		-1,352.02		-9,043.73		-3,161.65		-58,377.81
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Principal Recoveries
Advanced Principal							34,520.34		1,352.02		9,043.73		3,161.65		58,377.81
TOTAL PRINCIPAL COLLECTED							6,716,717.11		2,010,087.32		4,980,453.12		5,104,655.27		20,200,838.20


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK





Page 7 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
														Group 5
TOTAL PRINCIPAL OTHER ACCOUNTS														0.00

PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
TOTAL PRINCIPAL OTHER ACCOUNTS						0.00		0.00		0.00		0.00		0.00



INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
														Group 5
Scheduled Interest														471,655.71
Repurchased/Substitution Interest														0.00
Liquidation Interest														0.00
Insurance Interest														0.00
Other Additional Interest														0.00
Prepayment Interest Shortfalls														-1,233.67
Delinquent Interest														-364,847.78
Interest Realized Losses
Compensating Interest														1,233.67
Civil Relief Act Shortfalls														-0.00
Interest Advanced														341,822.62
TOTAL INTEREST COLLECTED														448,630.56
INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						1,535,565.14		218,881.81		379,952.48		758,918.08		3,364,973.22
Repurchased/Substitution Interest						0.00		0.00		0.00		0.00		0.00
Liquidation Interest						0.00		0.00		0.00		0.00		0.00
Insurance Interest						0.00		0.00		0.00		0.00		0.00
Other Additional Interest						0.00		0.00		0.00		0.00		0.00
Prepayment Interest Shortfalls						-4,889.75		-631.33		-2,108.71		-3,112.72		-11,976.18
Delinquent Interest						-1,128,834.19		-164,537.38		-279,525.43		-545,185.58		-2,482,930.36
Interest Realized Losses
Compensating Interest						4,889.75		631.33		2,108.71		3,112.72		11,976.17
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						1,056,033.08		155,518.10		262,304.72		510,355.64		2,326,034.16
TOTAL INTEREST COLLECTED						1,462,764.03		209,862.53		362,731.78		724,088.13		3,208,077.02




Page 8 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
														Group 5
Prepayment Charges														0.00
TOTAL INTEREST OTHER ACCOUNTS														0.00

INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Charges						0.00		0.00		0.00		0.00		0.00
TOTAL INTEREST OTHER ACCOUNTS						0.00		0.00		0.00		0.00		0.00





Page 9 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

INTEREST - FEES
INTEREST - FEES
														Group 5
Current Servicing Fees														6,730.41
Trustee Fees														357.07
TOTAL INTEREST FEES														8,052.86

INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						26,320.42		3,033.37		6,291.60		13,628.81		56,004.60
Trustee Fees						1,189.46		144.63		282.15		581.51		2,554.81
TOTAL INTEREST FEES						28,557.16		4,080.35		8,247.59		15,232.02		64,169.97




Page 10 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE
INSURANCE
														Group 5
PMI PREMIUM														965.38

INSURANCE
INSURANCE
						Group 4		Group 3		Group 2		Group 1		Total
PMI PREMIUM						1,047.28		902.34		1,673.85		1,021.70		5,610.56



STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK



Page 11 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Collateral Report


COLLATERAL



															Group 5



Loan Count:


Original														331
Prior														317
Prefunding														0
Scheduled Paid Offs														-0
Full Voluntary Prepayments														-6
Repurchases														-0
Liquidations														-0
Current														311
Principal Balance:


Original														99,605,493.60
Prior														95,217,803.80
Prefunding														0.00
Scheduled Principal														-15,026.80
Partial Prepayments														-5,817.77
Full Voluntary Prepayments														-1,368,080.81
Repurchases														-0.00
Liquidations														-0.00
Current														93,828,878.42

COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



Loan Count:
Loan Count:


Original						1,255		230		161		703		2,680
Prior						1,197		204		148		671		2,537
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-23		-8		-8		-17		-62
Repurchases						-0		-0		-0		-0		-0
Liquidations						-0		-0		-0		-0		-0
Current						1,174		196		140		654		2,475
Principal Balance:


Original						333,839,948.95		44,140,168.26		81,920,973.66		162,545,311.04		722,051,895.51
Prior						317,188,899.71		38,568,499.63		75,239,363.84		155,068,023.56		681,282,590.54
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-43,762.31		-1,352.02		-11,211.83		-4,357.29		-75,710.25
Partial Prepayments						-62,415.39		-656.59		-10,129.31		-7,421.11		-86,440.17
Full Voluntary Prepayments						-6,610,539.41		-2,008,078.71		-4,959,111.98		-5,092,876.87		-20,038,687.78
Repurchases						-0.00		-0.00		-0.00		-0.00		-0.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						310,472,182.60		36,558,412.31		70,258,910.72		149,963,368.29		661,081,752.34







Page 12 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

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Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK







Page 13 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
														Group 5
Weighted Average Coupon Original														5.94086%
Weighted Average Coupon Prior														5.94507%
Weighted Average Coupon Current														5.94413%
Weighted Average Months to Maturity Original														358
Weighted Average Months to Maturity Prior														356
Weighted Average Months to Maturity Current														355
Weighted Avg Remaining Amortization Term Original														358
Weighted Avg Remaining Amortization Term Prior														356
Weighted Avg Remaining Amortization Term Current														355
Weighted Average Seasoning Original														1.70
Weighted Average Seasoning Prior														3.70
Weighted Average Seasoning Current														4.70
CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						5.81639%		6.80965%		6.08317%		5.88298%		5.93954%
Weighted Average Coupon Prior						5.81375%		6.80140%		6.06024%		5.88012%		5.93154%
Weighted Average Coupon Current						5.80940%		6.81017%		6.05990%		5.87292%		5.92701%
Weighted Average Months to Maturity Original						357		358		358		357		357
Weighted Average Months to Maturity Prior						355		356		356		355		355
Weighted Average Months to Maturity Current						354		355		355		354		354
Weighted Avg Remaining Amortization Term Original						357		358		358		357		357
Weighted Avg Remaining Amortization Term Prior						355		356		356		355		355
Weighted Avg Remaining Amortization Term Current						354		355		355		354		354
Weighted Average Seasoning Original						2.96		2.45		1.89		2.46		2.52
Weighted Average Seasoning Prior						4.94		4.41		3.88		4.46		4.51
Weighted Average Seasoning Current						5.94		5.42		4.83		5.45		5.51





Page 14 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution






Page 15 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
														Group 5
Weighted Average Margin Original														2.69583%
Weighted Average Margin Prior														2.69531%
Weighted Average Margin Current														2.69462%
Weighted Average Max Rate Original														1178.60887%
Weighted Average Max Rate Prior														1178.53713%
Weighted Average Max Rate Current														1178.23773%
Weighted Average Min Rate Original														269.58331%
Weighted Average Min Rate Prior														269.53102%
Weighted Average Min Rate Current														269.46155%
Weighted Average Cap Up Original														1.00000%
Weighted Average Cap Up Prior														1.00000%
Weighted Average Cap Up Current														1.00000%
Weighted Average Cap Down Original														1.00000%
Weighted Average Cap Down Prior														1.00000%
Weighted Average Cap Down Current														1.00000%

ARM CHARACTERISTICS
ARM CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Margin Original						2.48950%		2.62585%		2.67343%		2.66419%		2.58649%
Weighted Average Margin Prior						2.48653%		2.63581%		2.67523%		2.66523%		2.58557%
Weighted Average Margin Current						2.48259%		2.63926%		2.67890%		2.66422%		2.58411%
Weighted Average Max Rate Original						1144.90907%		1249.23393%		1205.81212%		1174.78778%		1169.57140%
Weighted Average Max Rate Prior						1144.13820%		1249.38514%		1203.39123%		1174.51001%		1168.47270%
Weighted Average Max Rate Current						1142.94147%		1250.10616%		1203.26575%		1173.62206%		1167.58668%
Weighted Average Min Rate Original						248.94976%		262.58503%		267.34307%		266.41921%		258.64914%
Weighted Average Min Rate Prior						248.65280%		263.58114%		267.52256%		266.52268%		258.55745%
Weighted Average Min Rate Current						248.25901%		263.92642%		267.89036%		266.42170%		258.41138%
Weighted Average Cap Up Original						0.99938%		1.00000%		1.00000%		1.00000%		0.99971%
Weighted Average Cap Up Prior						1.00000%		1.00000%		1.00000%		1.00000%		1.00000%
Weighted Average Cap Up Current						1.00000%		1.00000%		1.00000%		1.00000%		1.00000%
Weighted Average Cap Down Original						0.99938%		1.00000%		1.00000%		1.00000%		0.99971%
Weighted Average Cap Down Prior						1.00000%		1.00000%		1.00000%		1.00000%		1.00000%
Weighted Average Cap Down Current						1.00000%		1.00000%		1.00000%		1.00000%		1.00000%





Page 16 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

SERVICING FEES & ADVANCES

															Group 5




Current Servicing Fees														6,730.41
Delinquent Servicing Fees														23,025.16
TOTAL SERVICING FEES														29,755.57


Total Servicing Fees														29,755.57
Compensating Interest														-1,233.67
Delinquent Servicing Fees														-23,025.16
COLLECTED SERVICING FEES														5,496.74


Total Advanced Interest														341,822.62
Total Advanced Principal														10,300.07
Aggregate Advances with respect to this Distribution														352,122.69

SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						26,320.42		3,033.37		6,291.60		13,628.81		56,004.60
Delinquent Servicing Fees						72,801.11		9,019.28		17,220.71		34,829.95		156,896.21
TOTAL SERVICING FEES						99,121.54		12,052.66		23,512.30		48,458.76		212,900.83


Total Servicing Fees						99,121.54		12,052.66		23,512.30		48,458.76		212,900.83
Compensating Interest						-4,889.75		-631.33		-2,108.71		-3,112.72		-11,976.17
Delinquent Servicing Fees						-72,801.11		-9,019.28		-17,220.71		-34,829.95		-156,896.21
COLLECTED SERVICING FEES						21,430.68		2,402.05		4,182.89		10,516.09		44,028.44


Total Advanced Interest						1,056,033.08		155,518.10		262,304.72		510,355.64		2,326,034.16
Total Advanced Principal						34,520.34		1,352.02		9,043.73		3,161.65		58,377.81
Aggregate Advances with respect to this Distribution						1,090,553.42		156,870.12		271,348.45		513,517.29		2,384,411.96







Page 17 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

ADDITIONAL COLLATERAL INFORMATION
														Group 5
Prepayment Interest Shortfall (PPIS)														1,233.67
Compensating Interest														-1,233.67
Net Prepayment Interest Shortfall (PPIS)														0.00
Weighted Average Net Mortgage Rate														5.552462%

ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						4,889.75		631.33		2,108.71		3,112.72		11,976.18
Compensating Interest						-4,889.75		-631.33		-2,108.71		-3,112.72		-11,976.17
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Weighted Average Net Mortgage Rate						5.425941%		6.402599%		5.653703%		5.485511%




Page 18 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				6,298,220.67		1,587,611.59		663,822.12		8,549,654.38
			% Balance				0.95%		0.24%		0.10%		1.29%
			# Loans				30		6		3		39
			% # Loans				1.21%		0.24%		0.12%		1.58%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		267,026.99		0.00		0.00		0.00		267,026.99
			% Balance		0.04%		0.00%		0.00%		0.00%		0.04%
			# Loans		2		0		0		0		2
			% # Loans		0.08%		0.00%		0.00%		0.00%		0.08%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		267,026.99		6,298,220.67		1,587,611.59		663,822.12		8,816,681.37
			% Balance		0.04%		0.95%		0.24%		0.10%		1.33%
			# Loans		2		30		6		3		41
			% # Loans		0.08%		1.21%		0.24%		0.12%		1.66%









Page 19 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,293,383.10		790,087.65		0.00		2,083,470.75
			% Balance				0.86%		0.53%		0.00%		1.39%
			# Loans				8		3		0		11
			% # Loans				1.22%		0.46%		0.00%		1.68%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		1,293,383.10		790,087.65		0.00		2,083,470.75
			% Balance		0.00%		0.86%		0.53%		0.00%		1.39%
			# Loans		0		8		3		0		11
			% # Loans		0.00%		1.22%		0.46%		0.00%		1.68%










Page 20 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				723,014.76		0.00		372,000.00		1,095,014.76
			% Balance				1.03%		0.00%		0.53%		1.56%
			# Loans				1		0		1		2
			% # Loans				0.71%		0.00%		0.71%		1.43%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		723,014.76		0.00		372,000.00		1,095,014.76
			% Balance		0.00%		1.03%		0.00%		0.53%		1.56%
			# Loans		0		1		0		1		2
			% # Loans		0.00%		0.71%		0.00%		0.71%		1.43%










Page 21 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

	GROUP 3
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,147,600.37		109,220.41		0.00		1,256,820.78
			% Balance				3.14%		0.30%		0.00%		3.44%
			# Loans				8		1		0		9
			% # Loans				4.08%		0.51%		0.00%		4.59%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		1,147,600.37		109,220.41		0.00		1,256,820.78
			% Balance		0.00%		3.14%		0.30%		0.00%		3.44%
			# Loans		0		8		1		0		9
			% # Loans		0.00%		4.08%		0.51%		0.00%		4.59%










Page 22 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

	GROUP 4
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,948,215.38		152,303.53		291,822.12		2,392,341.03
			% Balance				0.63%		0.05%		0.09%		0.77%
			# Loans				10		1		2		13
			% # Loans				0.85%		0.09%		0.17%		1.11%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		76,358.01		0.00		0.00		0.00		76,358.01
			% Balance		0.02%		0.00%		0.00%		0.00%		0.02%
			# Loans		1		0		0		0		1
			% # Loans		0.09%		0.00%		0.00%		0.00%		0.09%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		76,358.01		1,948,215.38		152,303.53		291,822.12		2,468,699.04
			% Balance		0.02%		0.63%		0.05%		0.09%		0.80%
			# Loans		1		10		1		2		14
			% # Loans		0.09%		0.85%		0.09%		0.17%		1.19%










Page 23 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

	GROUP 5
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,186,007.06		536,000.00		0.00		1,722,007.06
			% Balance				1.26%		0.57%		0.00%		1.84%
			# Loans				3		1		0		4
			% # Loans				0.96%		0.32%		0.00%		1.29%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		190,668.98		0.00		0.00		0.00		190,668.98
			% Balance		0.20%		0.00%		0.00%		0.00%		0.20%
			# Loans		1		0		0		0		1
			% # Loans		0.32%		0.00%		0.00%		0.00%		0.32%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		190,668.98		1,186,007.06		536,000.00		0.00		1,912,676.04
			% Balance		0.20%		1.26%		0.57%		0.00%		2.04%
			# Loans		1		3		1		0		5
			% # Loans		0.32%		0.96%		0.32%		0.00%		1.61%









Page 24 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
REO Report
Loan Number			Original		Stated				Current		State &

														First
&			Principal		Principal		Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance		Date		Rate		Origination		Term		Date




TOTAL


Page 25 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Foreclosure Report
Loan Number			Original		Stated				Current		State &

														First
&			Principal		Principal		Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance		Date		Rate		Origination		Term		Date




TOTAL


Page 26 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

															Group 5




Current


Number of Paid in Full Loans														6
Number of Repurchased Loans														0
Total Number of Loans Prepaid in Full														6
Curtailments Amount														5,817.77
Paid in Full Balance														1,368,080.81
Repurchased Loans Balance														0.00
Total Prepayment Amount														1,373,898.58

Cumulative


Number of Paid in Full Loans														20
Number of Repurchased Loans														0
Total Number of Loans Prepaid in Full														20
Paid in Full Balance														5,688,866.82
Repurchased Loans Balance														0.00
Curtailments Amount														26,394.46
Total Prepayment Amount														5,715,261.28

VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




Current


Number of Paid in Full Loans						23		8		8		17		62
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						23		8		8		17		62
Curtailments Amount						62,415.39		656.59		10,129.31		7,421.11		86,440.17
Paid in Full Balance						6,610,539.41		2,008,078.71		4,959,111.98		5,092,876.87		20,038,687.78
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Total Prepayment Amount						6,672,954.80		2,008,735.30		4,969,241.29		5,100,297.98		20,125,127.95

Cumulative


Number of Paid in Full Loans						79		34		21		48		202
Number of Repurchased Loans						2		0		0		1		3
Total Number of Loans Prepaid in Full						81		34		21		49		205
Paid in Full Balance						22,354,491.87		7,561,967.17		11,601,448.99		12,086,963.74		59,293,738.59
Repurchased Loans Balance						471,800.00		0.00		0.00		280,488.00		752,288.00
Curtailments Amount						359,255.26		14,548.72		15,480.88		192,256.91		607,936.23
Total Prepayment Amount						23,185,547.13		7,576,515.89		11,616,929.87		12,559,708.65		60,653,962.82





Page 27 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution






Page 28 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

															Group 5



SMM														1.44%
3 Months Avg SMM														1.65%
12 Months Avg SMM														1.47%
Avg SMM Since Cut-off														1.47%


CPR														16.01%
3 Months Avg CPR														18.10%
12 Months Avg CPR														16.25%
Avg CPR Since Cut-off														16.25%


PSA														1,701.16%
3 Months Avg PSA Approximation														2,445.14%
12 Months Avg PSA Approximation														2,537.96%
Avg PSA Since Cut-off Approximation														2,537.95%

VOLUNTARY PREPAYMENTS RATES



							Group 4		Group 3		Group 2		Group 1		Total



SMM						2.10%		5.21%		6.61%		3.29%		2.95%
3 Months Avg SMM						2.07%		4.87%		4.13%		2.20%		2.43%
12 Months Avg SMM						1.78%		4.60%		3.75%		1.99%		2.17%
Avg SMM Since Cut-off						1.78%		4.60%		3.75%		1.99%		2.17%


CPR						22.52%		47.37%		55.96%		33.06%		30.22%
3 Months Avg CPR						22.24%		45.09%		39.71%		23.43%		25.59%
12 Months Avg CPR						19.43%		43.16%		36.81%		21.44%		23.15%
Avg CPR Since Cut-off						19.43%		43.16%		36.81%		21.44%		23.15%


PSA						1,895.97%		4,366.41%		5,787.85%		3,033.37%		2,744.01%
3 Months Avg PSA Approximation						2,249.35%		5,105.85%		5,127.95%		2,629.27%		2,835.38%
12 Months Avg PSA Approximation						2,183.84%		5,498.44%		5,450.98%		2,709.14%		2,882.99%
Avg PSA Since Cut-off Approximation						2,183.84%		5,498.43%		5,450.98%		2,709.14%		2,883.00%







Page 29 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution











Page 30 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

PREPAYMENT CALCULATION METHODOLOGY

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) PSA Standard Prepayment Model: CPR/(0.002min(30,WAS)) Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)(1-SMMn+1)...(1-SMMm)]^(1/months in period n,m) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m)) Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m) Weighted Average Seasoning (WAS) Dates correspond to distribution dates. Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.













Page 31 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Prepayment Detail Report
Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution
Loan Number			Original							Current		State &		Type Prepayment		First
Loan Number			Original							Current		State &		Type Prepayment

&		Loan	Principal		Prepayment			Prepayment		Note		LTV at		&		Payment

Loan Group		Status	Balance		Amount			Date		Rate		Origination		Original Term		Date

120152425 1			262,400.00		262,400.00			22-Sep-2005		5.250%		Paid Off - 360		01-Oct-2004
			262,400.00

120383155 4			140,400.00		139,334.43			03-Oct-2005		5.625%		Paid Off - 360		01-Mar-2005
120383155 4					139,334.43			03-Oct-2005		5.625%		Paid Off - 360		01-Mar-2005
120383364 4			208,000.00		208,000.00			13-Oct-2005		6.250%		Paid Off - 360		01-Mar-2005
120383364 4					208,000.00			13-Oct-2005		6.250%		Paid Off - 360		01-Mar-2005
120385165 4			85,000.00		84,408.04			05-Oct-2005		6.250%		Paid Off - 360		01-Apr-2005
120385165 4					84,408.04			05-Oct-2005		6.250%		Paid Off - 360		01-Apr-2005
120385179 4			256,000.00		256,000.00			06-Oct-2005		6.000%		Paid Off - 360		01-Apr-2005
120385179 4					256,000.00			06-Oct-2005		6.000%		Paid Off - 360		01-Apr-2005
120386788 3			132,000.00		131,999.52			23-Sep-2005		6.500%		Paid Off - 360		01-Apr-2005
120386788 3					131,999.52			23-Sep-2005		6.500%		Paid Off - 360		01-Apr-2005
120386798 4			313,200.00		312,499.49			03-Oct-2005		6.250%		Paid Off - 360		01-Apr-2005
120386798 4					312,499.49			03-Oct-2005		6.250%		Paid Off - 360		01-Apr-2005
120387230 4			211,200.00		211,200.00			12-Oct-2005		5.500%		Paid Off - 360		01-Apr-2005
120387230 4					211,200.00			12-Oct-2005		5.500%		Paid Off - 360		01-Apr-2005
120387733 4			144,000.00		142,776.85			23-Sep-2005		5.750%		Paid Off - 360		01-Feb-2005
120387733 4					142,776.85			23-Sep-2005		5.750%		Paid Off - 360		01-Feb-2005
120387775 1			322,000.00		41,148.51			23-Sep-2005		6.125%		Paid Off - 360		01-Feb-2005
120387775 1					41,148.51			23-Sep-2005		6.125%		Paid Off - 360		01-Feb-2005
120387913 4			65,200.00		64,698.00			14-Oct-2005		6.250%		Paid Off - 360		01-Mar-2005
120387913 4					64,698.00			14-Oct-2005		6.250%		Paid Off - 360		01-Mar-2005
120388869 4			128,000.00		127,258.15			16-Sep-2005		6.250%		Paid Off - 360		01-Apr-2005
120388869 4					127,258.15			16-Sep-2005		6.250%		Paid Off - 360		01-Apr-2005
120388905 4			268,000.00		266,199.42			06-Oct-2005		5.500%		Paid Off - 360		01-Apr-2005
120388905 4					266,199.42			06-Oct-2005		5.500%		Paid Off - 360		01-Apr-2005
120390441 1			352,500.00		352,500.00			29-Sep-2005		6.500%		Paid Off - 360		01-Mar-2005
120390441 1					352,500.00			29-Sep-2005		6.500%		Paid Off - 360		01-Mar-2005
120390962 1			324,000.00		324,000.00			05-Oct-2005		4.375%		Paid Off - 360		01-Apr-2005
120390962 1					324,000.00			05-Oct-2005		4.375%		Paid Off - 360		01-Apr-2005
120391170 4			569,500.00		569,500.00			07-Oct-2005		5.250%		Paid Off - 360		01-Apr-2005
120391170 4					569,500.00			07-Oct-2005		5.250%		Paid Off - 360		01-Apr-2005
120392174 3			133,200.00		133,200.00			12-Oct-2005		7.000%		Paid Off - 360		01-May-2005
120392174 3					133,200.00			12-Oct-2005		7.000%		Paid Off - 360		01-May-2005
120392176 4			259,000.00		259,000.00			20-Sep-2005		6.250%		Paid Off - 360		01-Jun-2005
120392176 4					259,000.00			20-Sep-2005		6.250%		Paid Off - 360		01-Jun-2005
120394834 4			448,000.00		448,000.00			03-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
120394834 4					448,000.00			03-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
120394915 4			564,000.00		563,995.00			16-Sep-2005		5.750%		Paid Off - 360		01-Jun-2005
120394915 4					563,995.00			16-Sep-2005		5.750%		Paid Off - 360		01-Jun-2005
120651256 2			500,000.00		500,000.00			30-Sep-2005		5.125%		Paid Off - 360		01-Dec-2004
120651256 2					500,000.00			30-Sep-2005		5.125%		Paid Off - 360		01-Dec-2004
120815414 1			269,139.00		269,138.38			12-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
120815414 1					269,138.38			12-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
120828621 3			299,250.00		299,200.00			27-Sep-2005		7.125%		Paid Off - 360		01-Apr-2005
120828621 3					299,200.00			27-Sep-2005		7.125%		Paid Off - 360		01-Apr-2005
120886328 5			80,550.00		80,550.00			10-Oct-2005		7.250%		Paid Off - 360		01-Jun-2005
120886328 5					80,550.00			10-Oct-2005		7.250%		Paid Off - 360		01-Jun-2005
120949356 1			595,000.00		595,000.00			23-Sep-2005		7.750%		Paid Off - 360		01-May-2005
120949356 1					595,000.00			23-Sep-2005		7.750%		Paid Off - 360		01-May-2005
120963879 4			217,600.00		216,605.72			22-Sep-2005		6.500%		Paid Off - 360		01-May-2005
120963879 4					216,605.72			22-Sep-2005		6.500%		Paid Off - 360		01-May-2005
120974750 4			130,000.00		129,859.47			11-Oct-2005		5.750%		Paid Off - 360		01-Feb-2005
120974750 4					129,859.47			11-Oct-2005		5.750%		Paid Off - 360		01-Feb-2005
120981846 1			273,888.00		273,888.00			07-Oct-2005		6.000%		Paid Off - 360		01-Jun-2005
120981846 1					273,888.00			07-Oct-2005		6.000%		Paid Off - 360		01-Jun-2005
120987222 2			451,113.00		451,112.99			29-Sep-2005		6.875%		Paid Off - 360		01-May-2005
120987222 2					451,112.99			29-Sep-2005		6.875%		Paid Off - 360		01-May-2005
121021352 2			440,000.00		440,000.00			30-Sep-2005		6.625%		Paid Off - 360		01-May-2005
121021352 2					440,000.00			30-Sep-2005		6.625%		Paid Off - 360		01-May-2005
121046451 3			313,025.00		313,025.00			28-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121046451 3					313,025.00			28-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121104171 1			288,000.00		288,000.00			27-Sep-2005		5.625%		Paid Off - 360		01-Apr-2005
121104171 1					288,000.00			27-Sep-2005		5.625%		Paid Off - 360		01-Apr-2005
121125569 3			263,992.00		263,992.00			10-Oct-2005		6.875%		Paid Off - 360		01-Jul-2005
121125569 3					263,992.00			10-Oct-2005		6.875%		Paid Off - 360		01-Jul-2005
121132814 1			260,750.00		260,749.99			07-Oct-2005		5.875%		Paid Off - 360		01-Jun-2005
121132814 1					260,749.99			07-Oct-2005		5.875%		Paid Off - 360		01-Jun-2005
121153846 1			238,150.00		238,150.00			29-Sep-2005		7.000%		Paid Off - 360		01-May-2005
121153846 1					238,150.00			29-Sep-2005		7.000%		Paid Off - 360		01-May-2005
121157525 5			211,000.00		210,002.75			21-Sep-2005		5.125%		Paid Off - 360		01-Jun-2005
121157525 5					210,002.75			21-Sep-2005		5.125%		Paid Off - 360		01-Jun-2005
121160116 2			500,000.00		500,000.00			21-Sep-2005		7.125%		Paid Off - 360		01-Jun-2005
121160116 2					500,000.00					7.125%		Paid Off - 360


Page 32 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution
Loan Number			Original							Current		State &		Type Prepayment		First
Loan Number			Original							Current		State &		Type Prepayment

&		Loan	Principal		Prepayment			Prepayment		Note		LTV at		&		Payment

Loan Group		Status	Balance		Amount			Date		Rate		Origination		Original Term		Date

121160902 2			500,000.00		500,000.00			29-Sep-2005		7.125%		Paid Off - 360		01-Jun-2005
			500,000.00

121168877 5			357,600.00		357,600.00			20-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121168877 5					357,600.00			20-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121172429 4			299,000.00		299,000.00			19-Sep-2005		5.125%		Paid Off - 360		01-May-2005
121172429 4					299,000.00			19-Sep-2005		5.125%		Paid Off - 360		01-May-2005
121172463 4			516,000.00		516,000.00			20-Sep-2005		5.625%		Paid Off - 360		01-May-2005
121172463 4					516,000.00			20-Sep-2005		5.625%		Paid Off - 360		01-May-2005
121177341 5			91,799.00		91,550.13			19-Sep-2005		8.000%		Paid Off - 360		01-Jun-2005
121177341 5					91,550.13			19-Sep-2005		8.000%		Paid Off - 360		01-Jun-2005
121178719 4			240,000.00		240,000.00			13-Oct-2005		5.875%		Paid Off - 360		01-Jul-2005
121178719 4					240,000.00			13-Oct-2005		5.875%		Paid Off - 360		01-Jul-2005
121190138 4			369,900.00		369,900.00			30-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121190138 4					369,900.00			30-Sep-2005		7.000%		Paid Off - 360		01-Jun-2005
121190892 5			164,019.00		163,999.22			03-Oct-2005		6.000%		Paid Off - 360		01-Jun-2005
121190892 5					163,999.22			03-Oct-2005		6.000%		Paid Off - 360		01-Jun-2005
121200058 1			270,000.00		269,999.99			29-Sep-2005		6.625%		Paid Off - 360		01-May-2005
121200058 1					269,999.99			29-Sep-2005		6.625%		Paid Off - 360		01-May-2005
121235338 1			334,670.00		334,670.00			07-Oct-2005		6.375%		Paid Off - 360		01-Jun-2005
121235338 1					334,670.00			07-Oct-2005		6.375%		Paid Off - 360		01-Jun-2005
121245420 1			254,252.00		254,252.00			20-Sep-2005		5.625%		Paid Off - 360		01-Jul-2005
121245420 1					254,252.00			20-Sep-2005		5.625%		Paid Off - 360		01-Jul-2005
121246961 1			322,850.00		322,850.00			28-Sep-2005		6.125%		Paid Off - 360		01-Jul-2005
121246961 1					322,850.00			28-Sep-2005		6.125%		Paid Off - 360		01-Jul-2005
121277793 3			250,000.00		249,662.19			03-Oct-2005		6.750%		Paid Off - 360		01-Jun-2005
121277793 3					249,662.19			03-Oct-2005		6.750%		Paid Off - 360		01-Jun-2005
121297061 1			296,000.00		296,000.00			03-Oct-2005		6.125%		Paid Off - 360		01-Jul-2005
121297061 1					296,000.00			03-Oct-2005		6.125%		Paid Off - 360		01-Jul-2005
121299457 1			358,150.00		358,150.00			06-Oct-2005		6.625%		Paid Off - 360		01-Jun-2005
121299457 1					358,150.00			06-Oct-2005		6.625%		Paid Off - 360		01-Jun-2005
121306674 1			351,980.00		351,980.00			19-Sep-2005		6.625%		Paid Off - 360		01-Jul-2005
121306674 1					351,980.00			19-Sep-2005		6.625%		Paid Off - 360		01-Jul-2005
121323888 2			1,000,000.00		1,000,000.00			06-Oct-2005		6.500%		Paid Off - 360		01-Jul-2005
121323888 2					1,000,000.00			06-Oct-2005		6.500%		Paid Off - 360		01-Jul-2005
121341450 4			520,800.00		520,799.30			22-Sep-2005		5.750%		Paid Off - 360		01-May-2005
121341450 4					520,799.30			22-Sep-2005		5.750%		Paid Off - 360		01-May-2005
121349099 3			297,000.00		297,000.00			04-Oct-2005		6.750%		Paid Off - 360		01-Jul-2005
121349099 3					297,000.00			04-Oct-2005		6.750%		Paid Off - 360		01-Jul-2005
121373342 4			529,000.00		528,999.21			28-Sep-2005		6.250%		Paid Off - 360		01-Aug-2005
121373342 4					528,999.21			28-Sep-2005		6.250%		Paid Off - 360		01-Aug-2005
121383433 2			568,000.00		567,999.99			23-Sep-2005		5.750%		Paid Off - 360		01-Jun-2005
121383433 2					567,999.99			23-Sep-2005		5.750%		Paid Off - 360		01-Jun-2005
121391078 2			999,999.00		999,999.00			04-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
121391078 2					999,999.00			04-Oct-2005		5.750%		Paid Off - 360		01-Jun-2005
121460194 3			320,000.00		320,000.00			30-Sep-2005		6.500%		Paid Off - 360		01-Jul-2005
121460194 3					320,000.00			30-Sep-2005		6.500%		Paid Off - 360		01-Jul-2005
121473622 4			238,000.00		136,506.33			30-Sep-2005		5.625%		Paid Off - 360		01-Jun-2005
121473622 4					136,506.33			30-Sep-2005		5.625%		Paid Off - 360		01-Jun-2005
121550200 5			464,400.00		464,378.71			04-Oct-2005		7.625%		Paid Off - 360		01-Aug-2005
121550200 5					464,378.71			04-Oct-2005		7.625%		Paid Off - 360		01-Aug-2005


TOTAL			20,430,476.00		20,038,687.78
TOTAL


Page 33 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



															Group 5


Current
Current



Number of Loans Liquidated														0
Collateral Principal Realized Loss/(Gain) Amount														0.00
Collateral Interest Realized Loss/(Gain) Amount														0.00
Net Liquidation Proceeds														0.00

Cumulative
Cumulative



Number of Loans Liquidated														0
Collateral Realized Loss/(Gain) Amount														0.00
Net Liquidation Proceeds														0.00





		Special Hazard Loss Coverage Amt
		Fraud Loss Coverage Amt
		Bankruptcy Loss Coverage Amt

COLLATERAL REALIZED LOSSES



							Group 4		Group 3		Group 2		Group 1		Total


Current
Current



Number of Loans Liquidated						0		0		0		0		0
Collateral Principal Realized Loss/(Gain) Amount						0.00		0.00		0.00		0.00		0.00
Collateral Interest Realized Loss/(Gain) Amount						0.00		0.00		0.00		0.00		0.00
Net Liquidation Proceeds						0.00		0.00		0.00		0.00		0.00

Cumulative
Cumulative



Number of Loans Liquidated						0		0		0		0		0
Collateral Realized Loss/(Gain) Amount						0.00		0.00		0.00		0.00		0.00
Net Liquidation Proceeds						0.00		0.00		0.00		0.00		0.00





		Special Hazard Loss Coverage Amt														6,812,825.91
		Fraud Loss Coverage Amt														14,441,037.92
		Bankruptcy Loss Coverage Amt														308,758.44







Page 34 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution





Page 35 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution


DEFAULT SPEEDS



															Group 5



MDR														0.00%
3 Months Avg MDR														0.00%
12 Months Avg MDR														0.00%
Avg MDR Since Cut-off														0.00%


CDR														0.00%
3 Months Avg CDR														0.00%
12 Months Avg CDR														0.00%
Avg CDR Since Cut-off														0.00%


SDA														0.00%
3 Months Avg SDA Approximation														0.00%
12 Months Avg SDA Approximation														0.00%
Avg SDA Since Cut-off Approximation														0.00%


Loss Severity Approximation for Current Period														0.00%
3 Months Avg Loss Severity Approximation														0.00%
12 Months Avg Loss Severity Approximation														0.00%
Avg Loss Severity Approximation Since Cut-off														0.00%

DEFAULT SPEEDS



							Group 4		Group 3		Group 2		Group 1		Total



MDR						0.00%		0.00%		0.00%		0.00%		0.00%
3 Months Avg MDR						0.00%		0.00%		0.00%		0.00%		0.00%
12 Months Avg MDR						0.00%		0.00%		0.00%		0.00%		0.00%
Avg MDR Since Cut-off						0.00%		0.00%		0.00%		0.00%		0.00%


CDR						0.00%		0.00%		0.00%		0.00%		0.00%
3 Months Avg CDR						0.00%		0.00%		0.00%		0.00%		0.00%
12 Months Avg CDR						0.00%		0.00%		0.00%		0.00%		0.00%
Avg CDR Since Cut-off						0.00%		0.00%		0.00%		0.00%		0.00%


SDA						0.00%		0.00%		0.00%		0.00%		0.00%
3 Months Avg SDA Approximation						0.00%		0.00%		0.00%		0.00%		0.00%
12 Months Avg SDA Approximation						0.00%		0.00%		0.00%		0.00%		0.00%
Avg SDA Since Cut-off Approximation						0.00%		0.00%		0.00%		0.00%		0.00%


Loss Severity Approximation for Current Period						0.00%		0.00%		0.00%		0.00%		0.00%
3 Months Avg Loss Severity Approximation						0.00%		0.00%		0.00%		0.00%		0.00%
12 Months Avg Loss Severity Approximation						0.00%		0.00%		0.00%		0.00%		0.00%
Avg Loss Severity Approximation Since Cut-off						0.00%		0.00%		0.00%		0.00%		0.00%








Page 36 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution








Page 37 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution



COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
	Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)



	Conditional Default Rate (CDR): 1-((1-MDR)^12)

	SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))

	Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn)(1-MDRn+1)...*(1-MDRm)]^(1/months in period n,m)
	Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)

	Average SDA Approximation over period between the nth month and mth month:
	AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))

	Average WASn,m: (WASn + WASn+1 +...+ WASm )/(number of months in the period n,m)
	Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

	Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)

	Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
	Dates correspond to distribution dates.




Page 38 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Realized Loss Detail Report
Loan Number			Current		State &				Prior		Realized				Cumulative
															Cumulative
&		Loan	Note		LTV at		Original		Principal		Loss/(Gain)		Realized		Realized

Loan Group		Status	Rate		Origination		Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)
Loan Group		Status	Rate		Origination		Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)




TOTAL



Page 39 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
														Group 5
						Has Optional Termination Date Reached (0=No,1=Yes)
						Has Sr. Credit Supp. Depletion Date Occured								0
						Has Spl. Haz. Cov. Term. Date Occured (0=No,1=Yes)
						Has Fraud Loss Coverage Term. Date Occured
						Has Bankrpt Loss Cov. Term. Date Occured

TRIGGER EVENTS
TRIGGER EVENTS
						Group 4		Group 3		Group 2		Group 1		Total
						Has Optional Termination Date Reached (0=No,1=Yes)								0
						Has Sr. Credit Supp. Depletion Date Occured		0		0		0		0
						0		0		0		0		0
						Has Spl. Haz. Cov. Term. Date Occured (0=No,1=Yes)								0
						Has Fraud Loss Coverage Term. Date Occured								0
						Has Bankrpt Loss Cov. Term. Date Occured								0



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK





Page 40 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
														Group 5
Current Senior Percentage														92.314419%
Next Senior Percentage														92.201882%
Current Subordinate Percentage														7.685581%
Next Subordinate Percentage														7.798118%
Senior Prepayment Percentage														100.000000%
Next Senior Prepayment Percentage														100.000000%
Subordinate Prepayment Percentage														0.000000%
Next Subordinate Prepayment Percentage														0.000000%

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Senior Percentage						92.278161%		91.586732%		91.999646%		92.309839%
Next Senior Percentage						92.112196%		91.124457%		91.433800%		92.048295%
Current Subordinate Percentage						7.721839%		8.413268%		8.000354%		7.690161%
Next Subordinate Percentage						7.887804%		8.875543%		8.566200%		7.951705%
Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Next Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Subordinate Prepayment Percentage						0.000000%		#######		0.000000%		0.000000%
Next Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%




Page 41 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
														Group 5
Current Scheduled Payments														486,682.51
Current Scheduled Payments 1 Month Prior														493,234.93
Current Scheduled Payments 2 Month Prior														504,101.28
Current Scheduled Payments 3 Month Prior														508,726.85
Current Scheduled Payments 4 Month Prior														0.00
Current Scheduled Payments 5 Month Prior														0.00
Current Scheduled Payments 6 Month Prior														0.00
Current Scheduled Payments 7 Month Prior														0.00
Current Scheduled Payments 8 Month Prior														0.00
Current Scheduled Payments 9 Month Prior														0.00
Current Scheduled Payments 10 Month Prior														0.00
Current Scheduled Payments 11 Month Prior														0.00


Sched. Payments for 60+Day Delinquent Loans														4,039.44
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior														1,136.11
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior														1,136.11
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior														0.00


Next Period Pass Through Rate - Subordinated Classes

Class B-1 Writedown Amount
Class B-2 Writedown Amount
Class B-3 Writedown Amount
Class B-4 Writedown Amount
Class B-5 Writedown Amount
Class B-6 Writedown Amount



Page 42 of 43
IndyMac INDX Mortgage Loan Trust 2005-AR13

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR13

October 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Scheduled Payments						1,579,327.45		220,233.83		391,164.31		763,275.37		3,440,683.48
Current Scheduled Payments 1 Month Prior						1,619,429.01		229,757.94		404,416.97		780,867.61		3,527,706.47
Current Scheduled Payments 2 Month Prior						1,647,182.44		242,135.96		414,240.32		790,150.85		3,597,810.85
Current Scheduled Payments 3 Month Prior						1,665,329.09		252,040.93		426,941.78		803,129.25		3,656,167.90
Current Scheduled Payments 4 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 5 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 6 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 7 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 8 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 9 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 10 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 11 Month Prior						0.00		0.00		0.00		0.00		0.00


Sched. Payments for 60+Day Delinquent Loans						2,826.36		591.61		2,015.00		3,966.41		13,438.82
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior						4,874.75		0.00		5,535.30		1,164.52		12,710.68
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior						2,528.82		0.00		2,015.00		851.86		6,531.80
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior						383.00		0.00		0.00		0.00		383.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior						0.00		0.00		0.00		0.00		0.00


Next Period Pass Through Rate - Subordinated Classes														5.648430%

Class B-1 Writedown Amount														0.00
Class B-2 Writedown Amount														0.00
Class B-3 Writedown Amount														0.00
Class B-4 Writedown Amount														0.00
Class B-5 Writedown Amount														0.00
Class B-6 Writedown Amount




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IndyMac INDX Mortgage Loan Trust 2005-AR13 8-K