
                                       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 February 1, 2005, providing for the
                issuance of IndyMAc INDX Mortgage Loan Trust 2005-AR3
                Mortgage Pass-Through Certificates, Series 2005-AR3)
                 (Exact name of registrant as specified in charter)


                                     DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-13                         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-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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					4
										2. Collection Account Report					4
										3. Credit Enhancement Report					9
										4. Collateral Report					10
				Certificate Insurer(s)						5. Delinquency Report					17
				Certificate Insurer(s)						5. Delinquency Report					17
										6. REO Report					23

										7. Foreclosure Report					24
										8. Prepayment Report					25
										9. Prepayment Detail Report					30
										9. Prepayment Detail Report					30
										10. Realized Loss Report					32
										11. Realized Loss Detail Report					37
				Servicer(s)						11. Realized Loss Detail Report					37
				Servicer(s)						12. Triggers and Adj. Cert. Report					38
				IndyMac Bank						12. Triggers and Adj. Cert. Report					38
				IndyMac Bank						13. Other Related Information					40
										13. Other Related Information					40


				Underwriter(s)
				Bear Stearns & Co.


										Total Number of Pages					41
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			February 01, 2005			Brent Hoyler
				Close Date:			January 28, 2005			Administrator
				First Distribution Date:			March 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 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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	$	133,402,800.00		104,674,703.03		469,648.93		3,107,362.51		3,577,011.44		0.00		0.00		101,567,340.52
1-A-1	SR	$	133,402,800.00		104,674,703.03		469,648.93		3,107,362.51		3,577,011.44		0.00		0.00		101,567,340.52
2-A-1	SR	$	109,545,500.00		78,412,131.31		353,652.77		7,906,837.67		8,260,490.44		0.00		0.00		70,505,293.64
3-A-1	SR	$	184,486,000.00		158,595,542.60		705,063.23		7,563,031.72		8,268,094.95		0.00		0.00		151,032,510.88
3-A-2	SR	$	17,696,000.00		15,212,572.89		67,630.06		725,450.22		793,080.28		0.00		0.00		14,487,122.67
3-X	NTL	$	0.00		0.00		21,581.17		0.00		21,581.17		0.00		0.00		0.00
4-A-1	SR	$	45,428,700.00		40,445,923.47		186,005.83		877,775.99		1,063,781.82		0.00		0.00		39,568,147.48
4-A-2	SR	$	1,542,000.00		1,372,868.12		6,313.65		29,794.61		36,108.26		0.00		0.00		1,343,073.51
5-A-1	SR	$	33,310,700.00		29,998,741.73		141,159.00		792,553.80		933,712.80		0.00		0.00		29,206,187.93
5-A-2	SR	$	1,130,000.00		1,017,648.33		4,788.54		26,885.83		31,674.37		0.00		0.00		990,762.50
A-R	SR/RES	$	100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	SUB	$	24,771,600.00		24,755,717.44		112,584.71		2,321.58		114,906.29		0.00		0.00		24,753,395.86
B-2	SUB	$	8,065,200.00		8,060,028.91		36,655.61		755.87		37,411.48		0.00		0.00		8,059,273.04
B-3	SUB	$	5,184,800.00		5,181,475.70		23,564.45		485.92		24,050.37		0.00		0.00		5,180,989.78
B-4	SUB	$	4,896,700.00		4,893,560.44		22,255.06		458.92		22,713.98		0.00		0.00		4,893,101.52
B-5	SUB	$	4,032,600.00		4,030,014.45		18,327.81		377.93		18,705.74		0.00		0.00		4,029,636.52
B-6	SUB	$	2,592,748.00		2,591,085.40		11,783.81		242.99		12,026.80		0.00		0.00		2,590,842.41
P	P	$	100.00		100.00		4,480.00		0.00		4,480.00		0.00		0.00		100.00

Total			576,085,548.00		479,242,113.82		2,185,494.63		21,034,335.56		23,219,830.19		0.00		0.00		458,207,778.26
Total




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		45660LFH7		133,402,800.00		784.651469		3.520533		23.293083		26.813616	761.358386
2-A-1	09/01/05		09/30/05		A-30/360		45660LFJ3		109,545,500.00		715.795093		3.228364		72.178571		75.406935	643.616521
3-A-1	09/01/05		09/30/05		A-30/360		45660LFK0		184,486,000.00		859.661669		3.821771		40.995153		44.816924	818.666516
3-A-2	09/01/05		09/30/05		A-30/360		45660LFL8		17,696,000.00		859.661669		3.821771		40.995153		44.816924	818.666516
3-X	09/01/05		09/30/05		A-30/360		45660LFM6		202,182,000.00		859.661669		0.106741		0.000000		0.106741	818.666516
4-A-1	09/01/05		09/30/05		A-30/360		45660LFN4		45,428,700.00		890.316550		4.094456		19.322058		23.416515	870.994492
4-A-2	09/01/05		09/30/05		A-30/360		45660LFP9		1,542,000.00		890.316550		4.094455		19.322056		23.416511	870.994494
5-A-1	09/01/05		09/30/05		A-30/360		45660LFQ7		33,310,700.00		900.573741		4.237647		23.792769		28.030417	876.780972
5-A-2	09/01/05		09/30/05		A-30/360		45660LFR5		1,130,000.00		900.573743		4.237646		23.792770		28.030416	876.780973
A-R	09/01/05		09/30/05		A-30/360		45660LFS3		100.00		0.000000		0.000000		0.000000		0.000000	0.000000
B-1	09/01/05		09/30/05		A-30/360		45660LFT1		24,771,600.00		999.358840		4.544911		0.093719		4.638630	999.265121
B-2	09/01/05		09/30/05		A-30/360		45660LFU8		8,065,200.00		999.358839		4.544910		0.093720		4.638630	999.265119
B-3	09/01/05		09/30/05		A-30/360		45660LFV6		5,184,800.00		999.358837		4.544910		0.093720		4.638630	999.265117
B-4	09/01/05		09/30/05		A-30/360		45660LFX2		4,896,700.00		999.358842		4.544910		0.093720		4.638630	999.265121
B-5	09/01/05		09/30/05		A-30/360		45660LFY0		4,032,600.00		999.358838		4.544911		0.093719		4.638630	999.265119
B-6	09/01/05		09/30/05		A-30/360		45660LFZ7		2,592,748.00		999.358750		4.544911		0.093719		4.638631	999.265031
P	09/01/05		09/30/05		45660LFW4		100.00		1,000.000000		44,800.000000		0.000000		44,800.000000		1,000.000000



Page 2 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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	133,402,800.00		4,358,962.89		31,780,464.66		54,994.82		31,835,459.48		36,194,422.37		0.00		0.00		101,567,340.52
2-A-1	109,545,500.00		3,486,015.34		38,910,507.27		129,699.09		39,040,206.36		42,526,221.70		0.00		0.00		70,505,293.64
3-A-1	184,486,000.00		6,187,472.92		33,294,954.46		158,534.66		33,453,489.12		39,640,962.04		0.00		0.00		151,032,510.88
3-A-2	17,696,000.00		593,505.85		3,193,670.60		30,259,818.52		3,208,877.33		3,802,383.18		0.00		0.00		14,487,122.67
3-X	0.00		189,165.98		0.00		0.00		0.00		189,165.98		0.00		0.00		0.00
4-A-1	45,428,700.00		1,602,885.47		5,749,929.04		110,623.48		5,860,552.52		7,463,437.99		0.00		0.00		39,568,147.48
4-A-2	1,542,000.00		54,407.24		0.00		111,082.77		198,926.49		253,333.73		0.00		0.00		1,343,073.51
5-A-1	33,310,700.00		1,211,774.08		4,046,177.03		58,335.04		4,104,512.07		5,316,286.15		0.00		0.00		29,206,187.93
5-A-2	1,130,000.00		41,107.05		137,258.60		1,978.90		139,237.50		180,344.55		0.00		0.00		990,762.50
A-R	100.00		0.45		0.00		0.00		100.00		100.45		0.00		0.00		0.00
B-1	24,771,600.00		903,014.03		0.00		18,204.14		18,204.14		921,218.17		0.00		0.00		24,753,395.86
B-2	8,065,200.00		294,005.57		0.00		5,926.96		5,926.96		299,932.53		0.00		0.00		8,059,273.04
B-3	5,184,800.00		189,004.64		0.00		3,810.22		3,810.22		192,814.86		0.00		0.00		5,180,989.78
B-4	4,896,700.00		178,502.34		0.00		3,598.48		3,598.48		182,100.82		0.00		0.00		4,893,101.52
B-5	4,032,600.00		147,002.80		0.00		2,963.48		2,963.48		149,966.28		0.00		0.00		4,029,636.52
B-6	2,592,748.00		94,515.00		0.00		1,905.59		1,905.59		96,420.59		0.00		0.00		2,590,842.41
P	100.00		62,434.95		0.00		0.00		0.00		62,434.95		0.00		0.00		100.00

Total	576,085,548.00		19,593,776.60		117,112,961.66		30,921,476.15		117,877,769.74		137,471,546.34		0.00		0.00		458,207,778.26


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	5.38410%		104,674,703.03		469,648.93		0.00		0.00		0.00		469,648.93		469,648.93		0.00
2-A-1	5.41222%		78,412,131.31		353,652.77		0.00		0.00		0.00		353,652.77		353,652.77		0.00
3-A-1	5.33480%		158,595,542.60		705,063.23		0.00		0.00		0.00		705,063.23		705,063.23		0.00
3-A-2	5.33480%		15,212,572.89		67,630.06		0.00		0.00		0.00		67,630.06		67,630.06		0.00
3-X	0.14900%		173,808,115.49		21,581.17		0.00		0.00		0.00		21,581.17		21,581.17		0.00
4-A-1	5.51865%		40,445,923.47		186,005.83		0.00		0.00		0.00		186,005.83		186,005.83		0.00
4-A-2	5.51865%		1,372,868.12		6,313.65		0.00		0.00		0.00		6,313.65		6,313.65		0.00
5-A-1	5.64660%		29,998,741.73		141,159.00		0.00		0.00		0.00		141,159.00		141,159.00		0.00
5-A-2	5.64660%		1,017,648.33		4,788.54		0.00		0.00		0.00		4,788.54		4,788.54		0.00
A-R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	5.45739%		24,755,717.44		112,584.71		0.00		0.00		0.00		112,584.71		112,584.71		0.00
B-2	5.45739%		8,060,028.91		36,655.61		0.00		0.00		0.00		36,655.61		36,655.61		0.00
B-3	5.45739%		5,181,475.70		23,564.45		0.00		0.00		0.00		23,564.45		23,564.45		0.00
B-4	5.45739%		4,893,560.44		22,255.06		0.00		0.00		0.00		22,255.06		22,255.06		0.00
B-5	5.45739%		4,030,014.45		18,327.81		0.00		0.00		0.00		18,327.81		18,327.81		0.00
B-6	5.45739%		2,591,085.40		11,783.81		0.00		0.00		0.00		11,783.81		11,783.81		0.00
P	53,760.00000%		100.00		0.00		0.00		0.00		0.00		0.00		4,480.00		0.00

Total			653,050,229.31		2,181,014.63		0.00		0.00		0.00		2,181,014.63		2,185,494.63		0.00



Page 3 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
														Group 5
Principal Collections														819,785.17
Principal Withrawals														0.00
Principal Other Accounts														0.00
TOTAL NET PRINCIPAL														819,785.17
Interest Collections														163,417.17
Interest Withdrawals														-0.00
Interest Other Accounts														0.00
Interest Fees														-2,231.48
TOTAL NET INTEREST														161,185.69
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION														980,970.86

SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						908,564.46		8,290,265.12		7,908,096.51		3,107,624.29		21,034,335.55
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						908,564.46		8,290,265.12		7,908,096.51		3,107,624.29		21,034,335.55
Interest Collections						215,637.96		901,667.18		407,433.80		534,746.60		2,222,902.71
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		4,480.00		0.00		0.00		4,480.00
Interest Fees						-3,025.38		-16,032.05		-7,332.05		-8,787.09		-37,408.04
TOTAL NET INTEREST						212,612.58		885,635.13		400,101.75		525,959.51		2,185,494.66
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						1,121,177.04		9,175,900.25		8,308,198.26		3,633,583.80		23,219,830.21





Page 4 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
															Group 5
Scheduled Principal Received															3,655.01
Curtailments															8,174.90
Prepayments In Full															807,955.26
Repurchased/Substitutions															0.00
Liquidations															0.00
Insurance Principal															0.00
Other Additional Principal															0.00
Delinquent Principal															-3,291.30
Realized Losses															-0.00
Principal Recoveries
Advanced Principal															3,291.30
TOTAL PRINCIPAL COLLECTED															819,785.17
PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							10,412.74		18,085.27		10,843.41		2,445.14		45,441.57
Curtailments							3,416.15		69,900.52		8,454.93		6,408.61		96,355.11
Prepayments In Full							894,735.57		8,202,279.33		7,888,798.17		3,098,770.54		20,892,538.87
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							-8,653.53		-14,284.48		-8,970.59		-1,967.73		-37,167.63
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Principal Recoveries
Advanced Principal							8,653.53		14,284.48		8,970.59		1,967.73		37,167.63
TOTAL PRINCIPAL COLLECTED							908,564.46		8,290,265.12		7,908,096.51		3,107,624.29		21,034,335.55


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK





Page 5 of 41
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Mortgage Pass-Through Certificates
2005-AR3

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														172,075.85
Repurchased/Substitution Interest														0.00
Liquidation Interest														0.00
Insurance Interest														0.00
Other Additional Interest														0.00
Prepayment Interest Shortfalls														-229.94
Delinquent Interest														-139,287.65
Interest Realized Losses
Compensating Interest														229.94
Civil Relief Act Shortfalls														-0.00
Interest Advanced														130,628.97
TOTAL INTEREST COLLECTED														163,417.17
INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						227,310.31		942,455.78		428,565.00		563,227.34		2,333,634.28
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		4,480.00		0.00		0.00		4,480.00
Prepayment Interest Shortfalls						-406.66		-5,965.19		-4,453.50		-3,064.42		-14,119.71
Delinquent Interest						-184,647.55		-710,635.03		-326,904.89		-438,430.57		-1,799,905.69
Interest Realized Losses
Compensating Interest						406.66		5,965.19		4,453.50		3,064.42		14,119.70
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						172,975.19		665,366.43		305,773.69		409,949.83		1,684,694.11
TOTAL INTEREST COLLECTED						215,637.96		901,667.18		407,433.80		534,746.60		2,222,902.71




Page 6 of 41
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Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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		4,480.00		0.00		0.00		4,480.00
TOTAL INTEREST OTHER ACCOUNTS						0.00		4,480.00		0.00		0.00		4,480.00





Page 7 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

INTEREST - FEES
INTEREST - FEES
														Group 5
Current Servicing Fees														2,045.93
Trustee Fees														185.55
TOTAL INTEREST FEES														2,231.48

INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						2,774.96		14,987.61		6,590.94		8,152.12		34,551.55
Trustee Fees						250.42		1,044.44		480.52		634.97		2,595.89
TOTAL INTEREST FEES						3,025.38		16,032.05		7,332.05		8,787.09		37,408.04




Page 8 of 41
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Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE
INSURANCE
														Group 5
PMI PREMIUM														0.00

INSURANCE
INSURANCE
						Group 4		Group 3		Group 2		Group 1		Total
PMI PREMIUM						0.00		0.00		260.60		0.00		260.60



STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK



Page 9 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

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Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Collateral Report


COLLATERAL



															Group 5



Loan Count:


Original														92
Prior														84
Prefunding														0
Scheduled Paid Offs														-0
Full Voluntary Prepayments														-2
Repurchases														-0
Liquidations														-0
Current														82
Principal Balance:


Original														37,681,384.53
Prior														34,254,761.40
Prefunding														0.00
Scheduled Principal														-3,655.01
Partial Prepayments														-8,174.90
Full Voluntary Prepayments														-807,955.26
Repurchases														-0.00
Liquidations														-0.00
Current														33,434,976.23

COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



Loan Count:
Loan Count:


Original						179		761		225		633		1,890
Prior						164		659		174		512		1,593
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-3		-24		-13		-10		-52
Repurchases						-0		-0		-0		-0		-0
Liquidations						-0		-0		-0		-0		-0
Current						161		635		161		502		1,541
Principal Balance:


Original						51,390,338.04		221,205,705.73		119,852,937.91		145,954,981.58		576,085,347.79
Prior						46,231,411.96		192,819,885.74		88,710,827.94		117,225,126.78		479,242,013.82
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-10,412.74		-18,085.27		-10,843.41		-2,445.14		-45,441.57
Partial Prepayments						-3,416.15		-69,900.52		-8,454.93		-6,408.61		-96,355.11
Full Voluntary Prepayments						-894,735.57		-8,202,279.33		-7,888,798.17		-3,098,770.54		-20,892,538.87
Repurchases						-0.00		-0.00		-0.00		-0.00		-0.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						45,322,847.50		184,529,620.62		80,802,731.43		114,117,502.49		458,207,678.27







Page 10 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK







Page 11 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
														Group 5
Weighted Average Coupon Original														6.05031%
Weighted Average Coupon Prior														6.03761%
Weighted Average Coupon Current														6.02810%
Weighted Average Months to Maturity Original														358
Weighted Average Months to Maturity Prior														352
Weighted Average Months to Maturity Current														351
Weighted Avg Remaining Amortization Term Original														358
Weighted Avg Remaining Amortization Term Prior														352
Weighted Avg Remaining Amortization Term Current														351
Weighted Average Seasoning Original														1.95
Weighted Average Seasoning Prior														7.93
Weighted Average Seasoning Current														8.93
CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						5.92126%		5.87557%		5.84973%		5.77684%		5.86069%
Weighted Average Coupon Prior						5.90591%		5.86799%		5.80885%		5.76440%		5.84646%
Weighted Average Coupon Current						5.90015%		5.86530%		5.79724%		5.76560%		5.84331%
Weighted Average Months to Maturity Original						358		358		358		358		358
Weighted Average Months to Maturity Prior						351		352		352		352		352
Weighted Average Months to Maturity Current						350		350		351		351		351
Weighted Avg Remaining Amortization Term Original						358		358		358		358		358
Weighted Avg Remaining Amortization Term Prior						351		352		352		352		352
Weighted Avg Remaining Amortization Term Current						350		350		351		351		351
Weighted Average Seasoning Original						2.25		1.96		1.69		2.17		1.98
Weighted Average Seasoning Prior						8.20		7.93		7.61		8.18		7.96
Weighted Average Seasoning Current						9.18		8.93		8.65		9.19		8.97





Page 12 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution






Page 13 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
														Group 5
Weighted Average Margin Original														2.75000%
Weighted Average Margin Prior														2.75000%
Weighted Average Margin Current														2.75000%
Weighted Average Max Rate Original														12.05031%
Weighted Average Max Rate Prior														12.03761%
Weighted Average Max Rate Current														12.02810%
Weighted Average Min Rate Original														2.75000%
Weighted Average Min Rate Prior														2.75000%
Weighted Average Min Rate Current														2.75000%
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						2.74723%		2.73448%		2.75112%		2.75815%		2.74609%
Weighted Average Margin Prior						2.74701%		2.73452%		2.74524%		2.75579%		2.74409%
Weighted Average Margin Current						2.74697%		2.73533%		2.74823%		2.75615%		2.74498%
Weighted Average Max Rate Original						11.92126%		11.84103%		11.85466%		11.75877%		11.84387%
Weighted Average Max Rate Prior						11.90591%		11.83454%		11.81495%		11.74315%		11.82909%
Weighted Average Max Rate Current						11.90015%		11.83074%		11.80385%		11.74338%		11.82520%
Weighted Average Min Rate Original						2.74723%		2.73448%		2.75112%		2.75815%		2.74609%
Weighted Average Min Rate Prior						2.74701%		2.73452%		2.74524%		2.75579%		2.74409%
Weighted Average Min Rate Current						2.74697%		2.73533%		2.74823%		2.75615%		2.74498%
Weighted Average Cap Up Original						1.00000%		1.68534%		1.67477%		1.67999%		1.57582%
Weighted Average Cap Up Prior						1.00000%		1.68444%		1.66921%		1.68700%		1.57019%
Weighted Average Cap Up Current						1.00000%		1.69183%		1.64566%		1.68903%		1.56641%
Weighted Average Cap Down Original						1.00000%		1.68534%		1.67477%		1.67999%		1.57582%
Weighted Average Cap Down Prior						1.00000%		1.68444%		1.66921%		1.68700%		1.57019%
Weighted Average Cap Down Current						1.00000%		1.69183%		1.64566%		1.68903%		1.56641%





Page 14 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

SERVICING FEES & ADVANCES

															Group 5




Current Servicing Fees														2,045.93
Delinquent Servicing Fees														8,658.68
TOTAL SERVICING FEES														10,704.61


Total Servicing Fees														10,704.61
Compensating Interest														-229.94
Delinquent Servicing Fees														-8,658.68
COLLECTED SERVICING FEES														1,816.00


Total Advanced Interest														130,628.97
Total Advanced Principal														3,291.30
Aggregate Advances with respect to this Distribution														133,920.27

SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						2,774.96		14,987.61		6,590.94		8,152.12		34,551.55
Delinquent Servicing Fees						11,672.36		45,268.61		21,131.20		28,480.74		115,211.59
TOTAL SERVICING FEES						14,447.32		60,256.22		27,722.13		36,632.85		149,763.13


Total Servicing Fees						14,447.32		60,256.22		27,722.13		36,632.85		149,763.13
Compensating Interest						-406.66		-5,965.19		-4,453.50		-3,064.42		-14,119.70
Delinquent Servicing Fees						-11,672.36		-45,268.61		-21,131.20		-28,480.74		-115,211.59
COLLECTED SERVICING FEES						2,368.30		9,022.42		2,137.43		5,087.70		20,431.86


Total Advanced Interest						172,975.19		665,366.43		305,773.69		409,949.83		1,684,694.11
Total Advanced Principal						8,653.53		14,284.48		8,970.59		1,967.73		37,167.63
Aggregate Advances with respect to this Distribution						181,628.72		679,650.91		314,744.28		411,917.56		1,721,861.75







Page 15 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

ADDITIONAL COLLATERAL INFORMATION
														Group 5
Prepayment Interest Shortfall (PPIS)														229.94
Compensating Interest														-229.94
Net Prepayment Interest Shortfall (PPIS)														0.00
Weighted Average Net Mortgage Rate														5.646597%

ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						406.66		5,965.19		4,453.50		3,064.42		14,119.71
Compensating Interest						-406.66		-5,965.19		-4,453.50		-3,064.42		-14,119.70
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Weighted Average Net Mortgage Rate						5.518652%		5.483802%		5.412215%		5.384097%




Page 16 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				5,959,991.41		2,610,221.60		1,617,032.21		10,187,245.22
			% Balance				1.30%		0.57%		0.35%		2.22%
			# Loans				20		8		4		32
			% # Loans				1.30%		0.52%		0.26%		2.08%
	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		236,000.00		0.00		0.00		0.00		236,000.00
			% Balance		0.05%		0.00%		0.00%		0.00%		0.05%
			# Loans		1		0		0		0		1
			% # Loans		0.06%		0.00%		0.00%		0.00%		0.06%
	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		236,000.00		5,959,991.41		2,610,221.60		1,617,032.21		10,423,245.22
			% Balance		0.05%		1.30%		0.57%		0.35%		2.27%
			# Loans		1		20		8		4		33
			% # Loans		0.06%		1.30%		0.52%		0.26%		2.14%









Page 17 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,300,874.40		1,490,390.24		279,960.21		3,071,224.85
			% Balance				1.14%		1.31%		0.25%		2.69%
			# Loans				7		6		1		14
			% # Loans				1.39%		1.20%		0.20%		2.79%
	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		1,300,874.40		1,490,390.24		279,960.21		3,071,224.85
			% Balance		0.00%		1.14%		1.31%		0.25%		2.69%
			# Loans		0		7		6		1		14
			% # Loans		0.00%		1.39%		1.20%		0.20%		2.79%










Page 18 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				600,000.00		1,000,000.00		1,337,072.00		2,937,072.00
			% Balance				0.74%		1.24%		1.65%		3.63%
			# Loans				1		1		3		5
			% # Loans				0.62%		0.62%		1.86%		3.11%
	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		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		600,000.00		1,000,000.00		1,337,072.00		2,937,072.00
			% Balance		0.00%		0.74%		1.24%		1.65%		3.63%
			# Loans		0		1		1		3		5
			% # Loans		0.00%		0.62%		0.62%		1.86%		3.11%










Page 19 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

	GROUP 3
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				3,439,258.82		119,831.36		0.00		3,559,090.18
			% Balance				1.86%		0.06%		0.00%		1.93%
			# Loans				10		1		0		11
			% # Loans				1.57%		0.16%		0.00%		1.73%
	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		236,000.00		0.00		0.00		0.00		236,000.00
			% Balance		0.13%		0.00%		0.00%		0.00%		0.13%
			# Loans		1		0		0		0		1
			% # Loans		0.16%		0.00%		0.00%		0.00%		0.16%
	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		236,000.00		3,439,258.82		119,831.36		0.00		3,795,090.18
			% Balance		0.13%		1.86%		0.06%		0.00%		2.06%
			# Loans		1		10		1		0		12
			% # Loans		0.16%		1.57%		0.16%		0.00%		1.89%










Page 20 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

	GROUP 4
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				619,858.19		0.00		0.00		619,858.19
			% Balance				1.37%		0.00%		0.00%		1.37%
			# Loans				2		0		0		2
			% # Loans				1.24%		0.00%		0.00%		1.24%
	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		619,858.19		0.00		0.00		619,858.19
			% Balance		0.00%		1.37%		0.00%		0.00%		1.37%
			# Loans		0		2		0		0		2
			% # Loans		0.00%		1.24%		0.00%		0.00%		1.24%










Page 21 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

	GROUP 5
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				0.00		0.00		0.00		0.00
			% Balance				0.00%		0.00%		0.00%		0.00%
			# Loans				0		0		0		0
			% # Loans				0.00%		0.00%		0.00%		0.00%
	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		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%









Page 22 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 23 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 24 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

															Group 5




Current


Number of Paid in Full Loans														2
Number of Repurchased Loans														0
Total Number of Loans Prepaid in Full														2
Curtailments Amount														8,174.90
Paid in Full Balance														807,955.26
Repurchased Loans Balance														0.00
Total Prepayment Amount														816,130.16

Cumulative


Number of Paid in Full Loans														10
Number of Repurchased Loans														0
Total Number of Loans Prepaid in Full														10
Paid in Full Balance														4,074,859.91
Repurchased Loans Balance														0.00
Curtailments Amount														141,661.74
Total Prepayment Amount														4,216,521.65

VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




Current


Number of Paid in Full Loans						3		24		13		10		52
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						3		24		13		10		52
Curtailments Amount						3,416.15		69,900.52		8,454.93		6,408.61		96,355.11
Paid in Full Balance						894,735.57		8,202,279.33		7,888,798.17		3,098,770.54		20,892,538.87
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Total Prepayment Amount						898,151.72		8,272,179.85		7,897,253.10		3,105,179.15		20,988,893.98

Cumulative


Number of Paid in Full Loans						18		126		64		131		349
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						18		126		64		131		349
Paid in Full Balance						5,864,782.51		36,040,535.62		38,747,908.81		31,304,498.10		116,032,584.95
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Curtailments Amount						113,152.33		484,293.34		198,851.06		512,296.91		1,450,255.38
Total Prepayment Amount						5,977,934.84		36,524,828.96		38,946,759.87		31,816,795.01		117,482,840.33





Page 25 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution






Page 26 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

															Group 5



SMM														2.38%
3 Months Avg SMM														2.22%
12 Months Avg SMM														1.47%
Avg SMM Since Cut-off														1.47%


CPR														25.13%
3 Months Avg CPR														23.63%
12 Months Avg CPR														16.32%
Avg CPR Since Cut-off														16.32%


PSA														1,406.77%
3 Months Avg PSA Approximation														1,489.08%
12 Months Avg PSA Approximation														1,499.66%
Avg PSA Since Cut-off Approximation														1,499.65%

VOLUNTARY PREPAYMENTS RATES



							Group 4		Group 3		Group 2		Group 1		Total



SMM						1.94%		4.29%		8.90%		2.65%		4.38%
3 Months Avg SMM						2.24%		3.39%		7.48%		3.64%		4.04%
12 Months Avg SMM						1.54%		2.23%		4.80%		3.03%		2.81%
Avg SMM Since Cut-off						1.54%		2.23%		4.80%		3.03%		2.81%


CPR						20.98%		40.92%		67.34%		27.54%		41.58%
3 Months Avg CPR						23.84%		33.89%		60.68%		35.88%		39.01%
12 Months Avg CPR						16.95%		23.73%		44.56%		30.85%		28.99%
Avg CPR Since Cut-off						16.95%		23.73%		44.56%		30.85%		28.99%


PSA						1,142.18%		2,292.23%		3,893.55%		1,498.56%		2,318.04%
3 Months Avg PSA Approximation						1,454.23%		2,136.69%		3,965.54%		2,193.72%		2,448.42%
12 Months Avg PSA Approximation						1,479.95%		2,179.19%		4,308.00%		2,721.27%		2,648.03%
Avg PSA Since Cut-off Approximation						1,479.95%		2,179.19%		4,308.00%		2,721.27%		2,648.02%







Page 27 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution











Page 28 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 29 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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

120285292 3			162,800.00		162,800.00			30-Sep-2005		5.875%		NC - 80.00%		Paid Off - 360		01-Feb-2005
			162,800.00

120319902 3			650,000.00		644,348.79			01-Oct-2005		5.625%		CA - 73.86%		Paid Off - 360		01-Feb-2005
120319902 3					644,348.79			01-Oct-2005		5.625%		CA - 73.86%		Paid Off - 360		01-Feb-2005
120365636 2			492,000.00		488,595.91			30-Sep-2005		6.125%		IL - 76.88%		Paid Off - 360		01-Mar-2005
120365636 2					488,595.91			30-Sep-2005		6.125%		IL - 76.88%		Paid Off - 360		01-Mar-2005
120401870 3			192,000.00		191,640.70			05-Oct-2005		6.625%		VA - 80.00%		Paid Off - 360		01-Nov-2004
120401870 3					191,640.70			05-Oct-2005		6.625%		VA - 80.00%		Paid Off - 360		01-Nov-2004
120407279 3			283,192.00		283,191.97			16-Sep-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120407279 3					283,191.97			16-Sep-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120416811 3			237,750.00		237,691.80			29-Sep-2005		5.875%		AZ - 79.99%		Paid Off - 360		01-Feb-2005
120416811 3					237,691.80			29-Sep-2005		5.875%		AZ - 79.99%		Paid Off - 360		01-Feb-2005
120424852 2			551,200.00		551,200.00			21-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120424852 2					551,200.00			21-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120433894 3			587,000.00		581,110.32			01-Oct-2005		5.500%		NJ - 53.36%		Paid Off - 360		01-Jan-2005
120433894 3					581,110.32			01-Oct-2005		5.500%		NJ - 53.36%		Paid Off - 360		01-Jan-2005
120456881 3			214,563.00		214,562.98			03-Oct-2005		5.875%		NV - 80.00%		Paid Off - 360		01-Feb-2005
120456881 3					214,562.98			03-Oct-2005		5.875%		NV - 80.00%		Paid Off - 360		01-Feb-2005
120498092 4			316,000.00		312,468.98			23-Sep-2005		5.500%		CA - 74.35%		Paid Off - 360		01-Dec-2004
120498092 4					312,468.98			23-Sep-2005		5.500%				Paid Off - 360		01-Dec-2004
120529335 3			322,700.00		322,700.00			26-Sep-2005		5.375%		AK - 72.52%		Paid Off - 360		01-Feb-2005
120529335 3					322,700.00			26-Sep-2005		5.375%		AK - 72.52%		Paid Off - 360		01-Feb-2005
120531655 3			432,000.00		432,000.00			16-Sep-2005		6.125%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120531655 3					432,000.00			16-Sep-2005		6.125%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120543983 3			106,960.00		106,829.58			10-Oct-2005		6.250%		AZ - 80.00%		Paid Off - 360		01-Feb-2005
120543983 3					106,829.58			10-Oct-2005		6.250%		AZ - 80.00%		Paid Off - 360		01-Feb-2005
120560956 3			392,000.00		392,000.00			12-Oct-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Nov-2004
120560956 3					392,000.00			12-Oct-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Nov-2004
120571785 5			442,500.00		441,907.21			30-Sep-2005		5.750%		CA - 75.00%		Paid Off - 360		01-Feb-2005
120571785 5					441,907.21			30-Sep-2005		5.750%		CA - 75.00%		Paid Off - 360		01-Feb-2005
120585102 3			400,000.00		400,000.00			22-Sep-2005		6.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120585102 3					400,000.00			22-Sep-2005		6.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120590184 2			840,000.00		840,000.00			06-Oct-2005		5.250%		NV - 70.00%		Paid Off - 360		01-Feb-2005
120590184 2					840,000.00			06-Oct-2005		5.250%		NV - 70.00%		Paid Off - 360		01-Feb-2005
120592007 5			368,000.00		366,048.05			28-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120592007 5					366,048.05			28-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120600939 4			364,000.00		356,766.59			30-Sep-2005		5.500%		CA - 70.00%		Paid Off - 360		01-Jan-2005
120600939 4					356,766.59			30-Sep-2005		5.500%		CA - 70.00%		Paid Off - 360		01-Jan-2005
120604526 1			327,832.00		327,831.98			23-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120604526 1					327,831.98			23-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120608937 1			333,000.00		333,000.00			22-Sep-2005		5.500%		CA - 79.29%		Paid Off - 360		01-Feb-2005
120608937 1					333,000.00			22-Sep-2005		5.500%		CA - 79.29%		Paid Off - 360		01-Feb-2005
120619808 3			147,000.00		144,283.43			23-Sep-2005		5.875%		CA - 47.27%		Paid Off - 360		01-Feb-2005
120619808 3					144,283.43			23-Sep-2005		5.875%		CA - 47.27%		Paid Off - 360		01-Feb-2005
120632835 3			224,000.00		223,999.99			04-Oct-2005		5.875%		VA - 80.00%		Paid Off - 360		01-Jan-2005
120632835 3					223,999.99			04-Oct-2005		5.875%		VA - 80.00%		Paid Off - 360		01-Jan-2005
120639737 1			324,000.00		324,000.00			16-Sep-2005		7.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120639737 1					324,000.00			16-Sep-2005		7.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120648664 3			220,500.00		220,500.00			20-Sep-2005		6.375%		FL - 90.00%		Paid Off - 360		01-Feb-2005
120648664 3					220,500.00			20-Sep-2005		6.375%		FL - 90.00%		Paid Off - 360		01-Feb-2005
120655373 1			271,920.00		271,920.00			27-Sep-2005		5.375%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120655373 1					271,920.00			27-Sep-2005		5.375%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120675972 3			649,000.00		648,841.13			12-Oct-2005		5.875%		CA - 72.51%		Paid Off - 360		01-Feb-2005
120675972 3					648,841.13			12-Oct-2005		5.875%		CA - 72.51%		Paid Off - 360		01-Feb-2005
120676234 3			650,000.00		650,000.00			05-Oct-2005		5.750%		IL - 73.78%		Paid Off - 360		01-Mar-2005
120676234 3					650,000.00			05-Oct-2005		5.750%		IL - 73.78%		Paid Off - 360		01-Mar-2005
120679849 2			850,000.00		849,999.64			27-Sep-2005		5.375%		IL - 60.71%		Paid Off - 360		01-Feb-2005
120679849 2					849,999.64			27-Sep-2005		5.375%		IL - 60.71%		Paid Off - 360		01-Feb-2005
120689488 4			225,600.00		225,500.00			03-Oct-2005		6.000%		MD - 80.00%		Paid Off - 360		01-Feb-2005
120689488 4					225,500.00			03-Oct-2005		6.000%		MD - 80.00%		Paid Off - 360		01-Feb-2005
120689859 1			354,389.00		354,388.83			23-Sep-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120689859 1					354,388.83			23-Sep-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120696837 2			476,000.00		476,000.00			05-Oct-2005		6.250%		NJ - 80.00%		Paid Off - 360		01-Mar-2005
120696837 2					476,000.00			05-Oct-2005		6.250%		NJ - 80.00%		Paid Off - 360		01-Mar-2005
120703994 1			360,000.00		360,000.00			04-Oct-2005		6.250%		NY - 72.00%		Paid Off - 360		01-Mar-2005
120703994 1					360,000.00			04-Oct-2005		6.250%		NY - 72.00%		Paid Off - 360		01-Mar-2005
120710040 3			306,800.00		306,800.00			23-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120710040 3					306,800.00			23-Sep-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120714228 1			293,300.00		293,229.73			19-Sep-2005		5.750%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120714228 1					293,229.73			19-Sep-2005		5.750%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120721845 2			481,900.00		481,900.00			05-Oct-2005		5.875%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120721845 2					481,900.00			05-Oct-2005		5.875%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120735225 3			297,000.00		297,000.00			28-Sep-2005		5.875%		VA - 89.85%		Paid Off - 360		01-Feb-2005
120735225 3					297,000.00					5.875%		VA - 89.85%		Paid Off - 360


Page 30 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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

120735939 2			750,000.00		749,762.05			21-Sep-2005		5.750%		CA - 57.69%		Paid Off - 360		01-Mar-2005
			750,000.00

120748302 2			592,000.00		592,000.00			21-Sep-2005		5.625%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120748302 2					592,000.00			21-Sep-2005		5.625%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120751175 3			486,000.00		485,965.20			20-Sep-2005		6.125%		MA - 79.93%		Paid Off - 360		01-Mar-2005
120751175 3					485,965.20			20-Sep-2005		6.125%		MA - 79.93%		Paid Off - 360		01-Mar-2005
120751705 3			300,000.00		300,000.00			16-Sep-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120751705 3					300,000.00			16-Sep-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120756032 2			413,600.00		413,600.00			13-Oct-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120756032 2					413,600.00			13-Oct-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120758652 2			426,825.00		426,730.52			16-Sep-2005		5.875%		AZ - 75.00%		Paid Off - 360		01-Mar-2005
120758652 2					426,730.52			16-Sep-2005		5.875%		AZ - 75.00%		Paid Off - 360		01-Mar-2005
120763148 3			337,904.00		337,904.00			19-Sep-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120763148 3					337,904.00			19-Sep-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120764236 1			228,000.00		228,000.00			03-Oct-2005		6.375%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120764236 1					228,000.00			03-Oct-2005		6.375%		VA - 80.00%		Paid Off - 360		01-Feb-2005
120770410 3			211,200.00		210,817.23			03-Oct-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120770410 3					210,817.23			03-Oct-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120773190 1			250,400.00		250,400.00			04-Oct-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-Mar-2005
120773190 1					250,400.00			04-Oct-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-Mar-2005
120778732 2			840,000.00		839,950.00			30-Sep-2005		5.500%		CA - 73.04%		Paid Off - 360		01-Mar-2005
120778732 2					839,950.00			30-Sep-2005		5.500%		CA - 73.04%		Paid Off - 360		01-Mar-2005
120814279 2			544,000.00		540,060.05			01-Oct-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120814279 2					540,060.05			01-Oct-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120821294 1			356,000.00		356,000.00			27-Sep-2005		6.250%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120821294 1					356,000.00			27-Sep-2005		6.250%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120832930 2			639,000.00		639,000.00			03-Oct-2005		5.875%		CA - 79.98%		Paid Off - 360		01-Mar-2005
120832930 2					639,000.00			03-Oct-2005		5.875%		CA - 79.98%		Paid Off - 360		01-Mar-2005
120841578 3			408,000.00		407,292.21			06-Oct-2005		6.375%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120841578 3					407,292.21			06-Oct-2005		6.375%		CA - 80.00%		Paid Off - 360		01-Mar-2005


TOTAL			20,929,835.00		20,892,538.87
TOTAL


Page 31 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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														4,792,420.14
		Fraud Loss Coverage Amt														28,480,045.00
		Bankruptcy Loss Coverage Amt														231,909.00







Page 32 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution





Page 33 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 34 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution








Page 35 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 36 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 37 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

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 38 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
														Group 5
Current Senior Percentage														90.546215%
Next Senior Percentage														90.315454%
Current Subordinate Percentage														9.453785%
Next Subordinate Percentage														9.684546%
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						90.455363%		90.140140%		88.390711%		89.293743%
Next Senior Percentage						90.266219%		89.698138%		87.256077%		89.002421%
Current Subordinate Percentage						9.544637%		9.859860%		11.609289%		10.706257%
Next Subordinate Percentage						9.733781%		10.301862%		12.743923%		10.997579%
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%		0.000000%
Next Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%




Page 39 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
														Group 5
Current Scheduled Payments														175,730.86
Current Scheduled Payments 1 Month Prior														180,264.08
Current Scheduled Payments 2 Month Prior														183,853.87
Current Scheduled Payments 3 Month Prior														184,709.19
Current Scheduled Payments 4 Month Prior														192,036.27
Current Scheduled Payments 5 Month Prior														193,270.44
Current Scheduled Payments 6 Month Prior														193,883.85
Current Scheduled Payments 7 Month Prior														193,962.82
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														0.00
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior														0.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior														1,752.43
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 40 of 41
IndyMac INDX Mortgage Loan Trust 2005-AR3

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR3

October 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Scheduled Payments						237,723.05		960,541.05		439,408.41		565,672.48		2,379,075.85
Current Scheduled Payments 1 Month Prior						241,766.24		994,250.50		477,724.23		597,876.25		2,491,881.31
Current Scheduled Payments 2 Month Prior						249,903.72		1,021,612.86		506,851.08		615,278.22		2,577,499.75
Current Scheduled Payments 3 Month Prior						255,809.21		1,043,952.25		527,289.85		640,136.75		2,651,897.25
Current Scheduled Payments 4 Month Prior						258,760.75		1,062,493.96		545,315.22		668,584.60		2,727,190.80
Current Scheduled Payments 5 Month Prior						260,180.40		1,074,978.22		555,301.96		680,509.78		2,764,240.80
Current Scheduled Payments 6 Month Prior						264,773.68		1,089,772.95		586,222.89		698,187.70		2,832,841.08
Current Scheduled Payments 7 Month Prior						266,322.45		1,102,693.60		598,043.99		705,452.29		2,866,475.15
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						0.00		1,828.70		11,628.94		8,240.16		21,697.80
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior						0.00		1,933.33		9,776.94		1,195.66		12,905.94
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior						0.00		728.75		0.00		1,827.66		4,308.84
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior						0.00		0.00		0.00		1,195.83		1,195.83
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior						0.00		883.75		0.00		0.00		883.75
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior						0.00		0.00		0.00		2,775.44		2,775.44
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior						0.00		0.00		0.00		2,442.49		2,442.49
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior						0.00		1,060.00		0.00		0.00		1,060.00
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														5.674050%

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




Page 41 of 41

IndyMac INDX Mortgage Loan Trust 2005-AR3 8-K