
                                       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):  August 25, 2005
                          (Date of earliest event reported)

          Indymac MBS, Inc. (as Depositor under the Pooling and Servicing
                Agreement, dated as May 1, 2005, providing for the
               issuance of IndyMAc INDX Mortgage Loan Trust 2005-AR9
                Mortgage Pass-Through Certificates, Series 2005-AR9)
                 (Exact name of registrant as specified in charter)


                                         DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-23                         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
     August 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:  Aug 26, 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 August 25, 2005.



IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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					24

										7. Foreclosure Report					25
										8. Prepayment Report					26
										9. Prepayment Detail Report					31
										9. Prepayment Detail Report					31
										10. Realized Loss Report					33
										11. Realized Loss Detail Report					38
				Servicer(s)						11. Realized Loss Detail Report					38
				Servicer(s)						12. Triggers and Adj. Cert. Report					39
				IndyMac Bank						12. Triggers and Adj. Cert. Report					39
				IndyMac Bank						13. Other Related Information					41
										13. Other Related Information					41


				Underwriter(s)
				Morgan Stanley


										Total Number of Pages					42
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			May 01, 2005			Brent Hoyler
				Close Date:			May 27, 2005			Administrator
				First Distribution Date:			June 27, 2005			(714) 247-6322
										Brent.Hoyler@db.com
										Brent.Hoyler@db.com
										Address:
										1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:			August 25, 2005
										Factor Information:			(800) 735-7777
				Record Date:			July 29, 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 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Certificate Payment Report
Current Period Distribution - REMIC II
					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	CSTR	$	141,610,000.00		137,664,526.81		628,179.79		2,747,223.49		3,375,403.28		0.00		0.00		134,917,303.32
1-A-1	CSTR	$	141,610,000.00		137,664,526.81		628,179.79		2,747,223.49		3,375,403.28		0.00		0.00		134,917,303.32
2-A-1	CSTR	$	81,374,000.00		77,287,046.59		356,387.06		2,768,030.98		3,124,418.04		0.00		0.00		74,519,015.61
3-A-1	CSTR	$	174,191,000.00		169,530,599.34		790,344.27		4,446,675.03		5,237,019.30		0.00		0.00		165,083,924.31
4-A-1	CSTR	$	6,725,000.00		6,438,317.88		29,092.89		291,016.01		320,108.90		0.00		0.00		6,147,301.87
4-A-2	CSTR	$	88,600,000.00		84,823,043.04		383,290.66		3,834,054.80		4,217,345.46		0.00		0.00		80,988,988.24
4-A-3	CSTR	$	22,828,000.00		22,828,000.00		103,153.09		0.00		103,153.09		0.00		0.00		22,828,000.00
4-A-4	CSTR	$	1,732,000.00		1,732,000.00		7,826.40		0.00		7,826.40		0.00		0.00		1,732,000.00
5-A-1	CSTR	$	73,708,000.00		71,856,553.33		330,800.24		481,911.69		812,711.93		0.00		0.00		71,374,641.64
6-A-1	CSTR	$	79,166,000.00		76,894,692.14		376,507.71		238,526.86		615,034.57		0.00		0.00		76,656,165.28
A-R	R	$	100.00		0.00		100.00		0.00		100.00		0.00		0.00		0.00
B-1	SUB	$	22,703,000.00		22,698,706.78		105,110.89		2,012.43		107,123.32		0.00		0.00		22,696,694.35
B-2	SUB	$	9,370,000.00		9,368,228.10		43,381.45		830.57		44,212.02		0.00		0.00		9,367,397.53
B-3	SUB	$	5,766,000.00		5,764,909.63		26,695.56		511.11		27,206.67		0.00		0.00		5,764,398.52
B-4	SUB	$	5,766,000.00		5,764,909.63		26,695.56		511.11		27,206.67		0.00		0.00		5,764,398.52
B-5	SUB	$	4,324,000.00		4,323,182.32		20,019.36		383.29		20,402.65		0.00		0.00		4,322,799.03
B-6	SUB	$	2,883,950.18		2,883,404.82		13,352.18		255.64		13,607.82		0.00		0.00		2,883,149.18
P	SUB	$	100.00		100.00		3,925.75		0.00		3,925.75		0.00		0.00		100.00

Total			720,747,150.18		699,858,220.41		3,244,862.86		14,811,943.01		18,056,805.87		0.00		0.00		685,046,277.40
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	07/25/05		08/24/05		A-30/360		45660LMV8		141,610,000.00		972.138456		4.435985		19.399926		23.835910	952.738531
2-A-1	07/25/05		08/24/05		A-30/360		45660LMW6		81,374,000.00		949.775685		4.379618		34.016160		38.395778	915.759525
3-A-1	07/25/05		08/24/05		A-30/360		45660LMX4		174,191,000.00		973.245457		4.537228		25.527582		30.064810	947.717875
4-A-1	07/25/05		08/24/05		A-30/360		45660LMY2		6,725,000.00		957.370688		4.326080		43.273756		47.599836	914.096932
4-A-2	07/25/05		08/24/05		A-30/360		45660LMZ9		88,600,000.00		957.370689		4.326080		43.273756		47.599836	914.096933
4-A-3	07/25/05		08/24/05		A-30/360		45660LNA3		22,828,000.00		1,000.000000		4.518709		0.000000		4.518709	1,000.000000
4-A-4	07/25/05		08/24/05		A-30/360		45660LNB1		1,732,000.00		1,000.000000		4.518707		0.000000		4.518707	1,000.000000
5-A-1	07/25/05		08/24/05		A-30/360		45660LNC9		73,708,000.00		974.881334		4.487983		6.538119		11.026102	968.343214
6-A-1	07/25/05		08/24/05		A-30/360		45660LND7		79,166,000.00		971.309554		4.755927		3.012996		7.768923	968.296558
A-R	07/25/05		08/24/05		A-30/360		45660LNE5		100.00		0.000000		1,000.000000		0.000000		1,000.000000	0.000000
B-1	07/25/05		08/24/05		A-30/360		45660LNF2		22,703,000.00		999.810896		4.629824		0.088642		4.718465	999.722255
B-2	07/25/05		08/24/05		A-30/360		45660LNG0		9,370,000.00		999.810896		4.629824		0.088641		4.718465	999.722255
B-3	07/25/05		08/24/05		A-30/360		45660LNH8		5,766,000.00		999.810897		4.629823		0.088642		4.718465	999.722255
B-4	07/25/05		08/24/05		A-30/360		45660LNK1		5,766,000.00		999.810897		4.629823		0.088642		4.718465	999.722255
B-5	07/25/05		08/24/05		A-30/360		45660LNL9		4,324,000.00		999.810897		4.629824		0.088642		4.718467	999.722255
B-6	07/25/05		08/24/05		A-30/360		45660LNM7		2,883,950.18		999.810898		4.629823		0.088642		4.718466	999.722256
P	07/25/05		08/24/05		A-30/360		45660LNJ4		100.00		1,000.000000		39,257.500000		0.000000		39,257.500000	1,000.000000



Page 2 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

Distribution to Date - REMIC II
																	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	141,610,000.00		1,909,810.83		6,653,840.29		38,856.39		6,692,696.68		8,602,507.51		0.00		0.00		134,917,303.32
2-A-1	81,374,000.00		1,100,909.39		6,818,065.04		36,919.35		6,854,984.39		7,955,893.78		0.00		0.00		74,519,015.61
3-A-1	174,191,000.00		2,406,501.40		9,059,020.54		48,055.15		9,107,075.69		11,513,577.09		0.00		0.00		165,083,924.31
4-A-1	6,725,000.00		89,207.74		574,536.67		3,161.46		577,698.13		666,905.87		0.00		0.00		6,147,301.87
4-A-2	88,600,000.00		1,175,287.06		7,569,360.45		41,651.30		7,611,011.76		8,786,298.82		0.00		0.00		80,988,988.24
4-A-3	22,828,000.00		309,700.70		0.00		0.00		0.00		309,700.70		0.00		0.00		22,828,000.00
4-A-4	1,732,000.00		23,497.53		0.00		0.00		0.00		23,497.53		0.00		0.00		1,732,000.00
5-A-1	73,708,000.00		1,010,478.97		2,321,337.70		12,020.66		2,333,358.36		3,343,837.33		0.00		0.00		71,374,641.64
6-A-1	79,166,000.00		1,147,073.62		2,493,407.55		16,427.17		2,509,834.72		3,656,908.34		0.00		0.00		76,656,165.28
A-R	100.00		100.49		99.21		0.79		100.00		200.49		0.00		0.00		0.00
B-1	22,703,000.00		315,523.31		6,268.48		37.17		6,305.65		321,828.96		0.00		0.00		22,696,694.35
B-2	9,370,000.00		130,223.03		2,587.13		15.34		2,602.47		132,825.50		0.00		0.00		9,367,397.53
B-3	5,766,000.00		80,135.10		1,592.04		9.44		1,601.48		81,736.58		0.00		0.00		5,764,398.52
B-4	5,766,000.00		80,135.10		1,592.04		9.44		1,601.48		81,736.58		0.00		0.00		5,764,398.52
B-5	4,324,000.00		60,094.38		1,193.89		7.08		1,200.97		61,295.35		0.00		0.00		4,322,799.03
B-6	2,883,950.18		40,080.76		795.59		4.72		801.00		40,881.76		0.69		0.00		2,883,149.18
P	100.00		3,925.75		0.00		0.00		0.00		3,925.75		0.00		0.00		100.00

Total	720,747,150.18		9,882,685.16		35,503,696.62		197,175.46		35,700,872.78		45,583,557.94		0.69		0.00		685,046,277.40


Interest Detail - REMIC II
	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	5.47574%		137,664,526.81		628,179.79		0.00		0.00		0.00		628,179.79		628,179.79		0.00
2-A-1	5.53346%		77,287,046.59		356,387.06		0.00		0.00		0.00		356,387.06		356,387.06		0.00
3-A-1	5.59435%		169,530,599.34		790,344.27		0.00		0.00		0.00		790,344.27		790,344.27		0.00
4-A-1	5.42245%		6,438,317.88		29,092.89		0.00		0.00		0.00		29,092.89		29,092.89		0.00
4-A-2	5.42245%		84,823,043.04		383,290.66		0.00		0.00		0.00		383,290.66		383,290.66		0.00
4-A-3	5.42245%		22,828,000.00		103,153.09		0.00		0.00		0.00		103,153.09		103,153.09		0.00
4-A-4	5.42245%		1,732,000.00		7,826.40		0.00		0.00		0.00		7,826.40		7,826.40		0.00
5-A-1	5.52434%		71,856,553.33		330,800.24		0.00		0.00		0.00		330,800.24		330,800.24		0.00
6-A-1	5.87569%		76,894,692.14		376,507.71		0.00		0.00		0.00		376,507.71		376,507.71		0.00
A-R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		100.00		0.00
B-1	5.55684%		22,698,706.78		105,110.89		0.00		0.00		0.00		105,110.89		105,110.89		0.00
B-2	5.55684%		9,368,228.10		43,381.45		0.00		0.00		0.00		43,381.45		43,381.45		0.00
B-3	5.55684%		5,764,909.63		26,695.56		0.00		0.00		0.00		26,695.56		26,695.56		0.00
B-4	5.55684%		5,764,909.63		26,695.56		0.00		0.00		0.00		26,695.56		26,695.56		0.00
B-5	5.55684%		4,323,182.32		20,019.36		0.00		0.00		0.00		20,019.36		20,019.36		0.00
B-6	5.55684%		2,883,404.82		13,352.18		0.00		0.00		0.00		13,352.18		13,352.18		0.00
P	47,109.00000%		100.00		0.00		0.00		0.00		0.00		0.00		3,925.75		0.00

Total			699,858,220.41		3,240,837.11		0.00		0.00		0.00		3,240,837.11		3,244,862.86		0.00



Page 3 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
												Group 6		Group 5
Principal Collections												239,713.22		482,330.03
Principal Withrawals												0.00		0.00
Principal Other Accounts												0.00		0.00
TOTAL NET PRINCIPAL												239,713.22		482,330.03
Interest Collections												412,819.38		363,834.66
Interest Withdrawals												-0.00		-0.00
Interest Other Accounts												3,925.75		0.00
Interest Fees												-6,925.32		-7,299.31
TOTAL NET INTEREST												409,819.81		356,535.34
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION												649,533.03		838,865.37

SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						4,126,540.20		4,446,746.72		2,769,125.25		2,747,487.58		14,811,943.00
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						4,126,540.20		4,446,746.72		2,769,125.25		2,747,487.58		14,811,943.00
Interest Collections						575,163.76		867,998.46		392,377.78		689,893.52		3,302,087.55
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		0.00		0.00		0.00		3,925.75
Interest Fees						-10,726.28		-16,065.37		-7,537.71		-12,596.43		-61,150.43
TOTAL NET INTEREST						564,437.48		851,933.08		384,840.07		677,297.09		3,244,862.87
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						4,690,977.68		5,298,679.80		3,153,965.32		3,424,784.67		18,056,805.87





Page 4 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
													Group 6		Group 5
Scheduled Principal Received													16,386.35		5,795.70
Curtailments													57,207.27		51,458.67
Prepayments In Full													166,119.60		425,075.66
Repurchased/Substitutions													0.00		0.00
Liquidations													0.00		0.00
Insurance Principal													0.00		0.00
Other Additional Principal													0.00		0.00
Delinquent Principal													-13,532.68		-4,829.04
Realized Losses													-0.00		-0.00
Advanced Principal													13,532.68		4,829.04
TOTAL PRINCIPAL COLLECTED													239,713.22		482,330.03
PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							20,192.16		991.62		14,800.51		3,649.06		61,815.40
Curtailments							154,927.85		18,817.13		302,701.75		13,870.97		598,983.64
Prepayments In Full							3,951,420.19		4,426,937.97		2,451,622.99		2,729,967.55		14,151,143.96
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							-18,226.70		-991.62		-10,479.74		-3,504.55		-51,564.33
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Advanced Principal							18,226.70		991.62		10,479.74		3,504.55		51,564.33
TOTAL PRINCIPAL COLLECTED							4,126,540.20		4,446,746.72		2,769,125.25		2,747,487.58		14,811,943.00


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK





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August 25, 2005 Distribution

PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
												Group 6		Group 5
TOTAL PRINCIPAL OTHER ACCOUNTS												0.00		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 6		Group 5
Scheduled Interest												432,110.02		381,027.88
Repurchased/Substitution Interest												0.00		0.00
Liquidation Interest												0.00		0.00
Insurance Interest												0.00		0.00
Other Additional Interest												0.00		0.00
Prepayment Interest Shortfalls												-0.00		-185.40
Delinquent Interest												-325,280.68		-271,139.63
Compensating Interest												0.00		185.40
Civil Relief Act Shortfalls												-0.00		-0.00
Interest Advanced												305,990.04		253,946.41
TOTAL INTEREST COLLECTED												412,819.38		363,834.66
INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						603,940.65		909,725.09		411,233.48		724,230.13		3,462,267.25
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						-2,339.35		-3,104.85		-0.00		-1,714.62		-7,344.22
Delinquent Interest						-443,205.72		-666,630.70		-297,096.29		-536,648.08		-2,540,001.10
Compensating Interest						2,339.35		3,104.85		0.00		1,714.62		7,344.22
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						414,428.83		624,904.06		278,240.59		502,311.47		2,379,821.40
TOTAL INTEREST COLLECTED						575,163.76		867,998.46		392,377.78		689,893.52		3,302,087.55




Page 6 of 42
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2005-AR9

August 25, 2005 Distribution

INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
												Group 6		Group 5
Prepayment Charges
TOTAL INTEREST OTHER ACCOUNTS												3,925.75		0.00

INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Charges														3,925.75
TOTAL INTEREST OTHER ACCOUNTS						0.00		0.00		0.00		0.00		3,925.75





Page 7 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

INTEREST - FEES
INTEREST - FEES
												Group 6		Group 5
Current Servicing Fees												6,614.46		7,008.89
Trustee Fees												310.86		290.43
TOTAL INTEREST FEES												6,925.32		7,299.31

INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						10,257.86		15,380.09		7,224.74		12,039.91		58,525.96
Trustee Fees						468.42		685.28		312.97		556.52		2,624.47
TOTAL INTEREST FEES						10,726.28		16,065.37		7,537.71		12,596.43		61,150.43




Page 8 of 42
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2005-AR9

August 25, 2005 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES

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Page 9 of 42
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Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Collateral Report


COLLATERAL



													Group 6		Group 5



Loan Count:


Original												279		297
Prior												274		293
Prefunding												0		0
Scheduled Paid Offs												-0		-0
Full Voluntary Prepayments												-1		-3
Repurchases												-0		-0
Liquidations												-0		-0
Current												273		290
Principal Balance:


Original												85,169,936.57		79,299,071.79
Prior												82,896,307.19		77,446,740.05
Prefunding												0.00		0.00
Scheduled Principal												-16,386.35		-5,795.70
Partial Prepayments												-57,207.27		-51,458.67
Full Voluntary Prepayments												-166,119.60		-425,075.66
Repurchases												-0.00		-0.00
Liquidations												-0.00		-0.00
Current												82,656,593.97		76,964,410.02

COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



Loan Count:
Loan Count:


Original						255		909		178		672		2,590
Prior						247		886		168		658		2,526
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-8		-19		-5		-13		-49
Repurchases						-0		-0		-0		-0		-0
Liquidations						-0		-0		-0		-0		-0
Current						239		867		163		645		2,477
Principal Balance:


Original						128,978,078.46		187,402,088.96		87,546,860.26		152,351,014.14		720,747,050.18
Prior						124,911,219.47		182,741,536.92		83,457,442.14		148,404,874.64		699,858,120.41
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-20,192.16		-991.62		-14,800.51		-3,649.06		-61,815.40
Partial Prepayments						-154,927.85		-18,817.13		-302,701.75		-13,870.97		-598,983.64
Full Voluntary Prepayments						-3,951,420.19		-4,426,937.97		-2,451,622.99		-2,729,967.55		-14,151,143.96
Repurchases						-0.00		-0.00		-0.00		-0.00		-0.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						120,784,679.27		178,294,790.20		80,688,316.89		145,657,387.06		685,046,177.41







Page 10 of 42
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Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

PREFUNDING

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Page 11 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
												Group 6		Group 5
Weighted Average Coupon Original												6.27576%		5.91252%
Weighted Average Coupon Prior												6.25904%		5.91250%
Weighted Average Coupon Current												6.25519%		5.90384%
Weighted Average Months to Maturity Original												358		358
Weighted Average Months to Maturity Prior												357		356
Weighted Average Months to Maturity Current												356		356
Weighted Avg Remaining Amortization Term Original												358		358
Weighted Avg Remaining Amortization Term Prior												357		356
Weighted Avg Remaining Amortization Term Current												356		356
Weighted Average Seasoning Original												1.51		2.11
Weighted Average Seasoning Prior												2.50		3.13
Weighted Average Seasoning Current												3.50		4.12
CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						5.80959%		5.97530%		5.91337%		5.85969%		5.94229%
Weighted Average Coupon Prior						5.80700%		5.97398%		5.91622%		5.85540%		5.93903%
Weighted Average Coupon Current						5.80195%		5.97385%		5.91296%		5.85612%		5.93652%
Weighted Average Months to Maturity Original						357		357		357		357		357
Weighted Average Months to Maturity Prior						356		356		357		357		356
Weighted Average Months to Maturity Current						355		355		355		356		355
Weighted Avg Remaining Amortization Term Original						357		357		357		357		357
Weighted Avg Remaining Amortization Term Prior						356		356		357		357		356
Weighted Avg Remaining Amortization Term Current						355		355		355		356		355
Weighted Average Seasoning Original						2.44		2.86		2.15		2.49		2.38
Weighted Average Seasoning Prior						3.44		3.85		3.16		3.48		3.38
Weighted Average Seasoning Current						4.44		4.84		4.15		4.48		4.37





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IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution






Page 13 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
												Group 6		Group 5
Weighted Average Margin Original												2.73182%		2.60312%
Weighted Average Margin Prior												2.73155%		2.60311%
Weighted Average Margin Current												2.73252%		2.59964%
Weighted Average Max Rate Original												12.23224%		11.57273%
Weighted Average Max Rate Prior												12.21486%		11.57271%
Weighted Average Max Rate Current												12.21288%		11.55603%
Weighted Average Min Rate Original												6.19227%		5.72035%
Weighted Average Min Rate Prior												6.17427%		5.72042%
Weighted Average Min Rate Current												6.17869%		5.70720%
Weighted Average Cap Up Original												1.04353%		1.09153%
Weighted Average Cap Up Prior												1.04418%		1.09150%
Weighted Average Cap Up Current												1.04231%		1.09365%
Weighted Average Cap Down Original												1.04353%		1.09153%
Weighted Average Cap Down Prior												1.04418%		1.09150%
Weighted Average Cap Down Current												1.04231%		1.09365%

ARM CHARACTERISTICS
ARM CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Margin Original						2.44000%		2.50906%		2.60394%		2.67034%		2.57899%
Weighted Average Margin Prior						2.44126%		2.50965%		2.60168%		2.67023%		2.57902%
Weighted Average Margin Current						2.44057%		2.51162%		2.59914%		2.67050%		2.57897%
Weighted Average Max Rate Original						11.19584%		11.48946%		11.74009%		11.69705%		11.60817%
Weighted Average Max Rate Prior						11.19590%		11.48927%		11.74025%		11.69350%		11.60530%
Weighted Average Max Rate Current						11.18957%		11.49329%		11.73586%		11.69474%		11.60290%
Weighted Average Min Rate Original						5.42969%		5.90933%		5.48474%		5.65884%		5.73162%
Weighted Average Min Rate Prior						5.42015%		5.90738%		5.48092%		5.65546%		5.72654%
Weighted Average Min Rate Current						5.40964%		5.90617%		5.46329%		5.65422%		5.72157%
Weighted Average Cap Up Original						1.65090%		1.43135%		1.60739%		1.61118%		1.44682%
Weighted Average Cap Up Prior						1.65077%		1.43542%		1.60216%		1.60930%		1.44614%
Weighted Average Cap Up Current						1.64884%		1.43548%		1.59895%		1.60953%		1.44556%
Weighted Average Cap Down Original						1.65090%		1.43135%		1.60739%		1.61118%		1.44682%
Weighted Average Cap Down Prior						1.65077%		1.43542%		1.60216%		1.60930%		1.44614%
Weighted Average Cap Down Current						1.64884%		1.43548%		1.59895%		1.60953%		1.44556%





Page 14 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

SERVICING FEES & ADVANCES

													Group 6		Group 5




Current Servicing Fees												6,614.46		7,008.89
Delinquent Servicing Fees												19,290.64		17,193.22
TOTAL SERVICING FEES												25,905.10		24,202.11


Total Servicing Fees												25,905.10		24,202.11
Compensating Interest												-0.00		-185.40
Delinquent Servicing Fees												-19,290.64		-17,193.22
COLLECTED SERVICING FEES												6,614.46		6,823.49


Total Advanced Interest												305,990.04		253,946.41
Total Advanced Principal												13,532.68		4,829.04
Aggregate Advances with respect to this Distribution												319,522.72		258,775.45

SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						10,257.86		15,380.09		7,224.74		12,039.91		58,525.96
Delinquent Servicing Fees						28,776.89		41,726.64		18,855.71		34,336.61		160,179.71
TOTAL SERVICING FEES						39,034.76		57,106.73		26,080.45		46,376.53		218,705.68


Total Servicing Fees						39,034.76		57,106.73		26,080.45		46,376.53		218,705.68
Compensating Interest						-2,339.35		-3,104.85		-0.00		-1,714.62		-7,344.22
Delinquent Servicing Fees						-28,776.89		-41,726.64		-18,855.71		-34,336.61		-160,179.71
COLLECTED SERVICING FEES						7,918.51		12,275.25		7,224.74		10,325.29		51,181.75


Total Advanced Interest						414,428.83		624,904.06		278,240.59		502,311.47		2,379,821.40
Total Advanced Principal						18,226.70		991.62		10,479.74		3,504.55		51,564.33
Aggregate Advances with respect to this Distribution						432,655.53		625,895.68		288,720.33		505,816.02		2,431,385.72







Page 15 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

ADDITIONAL COLLATERAL INFORMATION
												Group 6		Group 5
Prepayment Interest Shortfall (PPIS)												0.00		185.40
Compensating Interest												-0.00		-185.40
Net Prepayment Interest Shortfall (PPIS)												0.00		0.00
Weighted Average Net Mortgage Rate												5.932517%		5.524344%

ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						2,339.35		3,104.85		0.00		1,714.62		7,344.22
Compensating Interest						-2,339.35		-3,104.85		-0.00		-1,714.62		-7,344.22
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Weighted Average Net Mortgage Rate						5.422451%		5.594348%		5.533456%		5.476616%		5.563750%




Page 16 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				10,635,194.58		1,570,940.00		1,535,450.02		13,741,584.60
			% Balance				1.55%		0.23%		0.22%		2.01%
			# Loans				33		6		5		44
			% # Loans				1.33%		0.24%		0.20%		1.78%
	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		167,818.16		0.00		312,000.00		0.00		479,818.16
			% Balance		0.02%		0.00%		0.05%		0.00%		0.07%
			# Loans		2		0		1		0		3
			% # Loans		0.08%		0.00%		0.04%		0.00%		0.12%
	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		167,818.16		10,635,194.58		1,882,940.00		1,535,450.02		14,221,402.76
			% Balance		0.02%		1.55%		0.27%		0.22%		2.08%
			# Loans		2		33		7		5		47
			% # Loans		0.08%		1.33%		0.28%		0.20%		1.90%









Page 17 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,954,922.67		395,940.00		651,750.00		3,002,612.67
			% Balance				1.34%		0.27%		0.45%		2.06%
			# Loans				9		2		3		14
			% # Loans				1.40%		0.31%		0.47%		2.17%
	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		1,954,922.67		395,940.00		651,750.00		3,002,612.67
			% Balance		0.00%		1.34%		0.27%		0.45%		2.06%
			# Loans		0		9		2		3		14
			% # Loans		0.00%		1.40%		0.31%		0.47%		2.17%










Page 18 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				2,459,888.00		0.00		0.00		2,459,888.00
			% Balance				3.05%		0.00%		0.00%		3.05%
			# Loans				5		0		0		5
			% # Loans				3.07%		0.00%		0.00%		3.07%
	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		2,459,888.00		0.00		0.00		2,459,888.00
			% Balance		0.00%		3.05%		0.00%		0.00%		3.05%
			# Loans		0		5		0		0		5
			% # Loans		0.00%		3.07%		0.00%		0.00%		3.07%










Page 19 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

	GROUP 3
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,596,449.30		543,000.00		333,700.02		2,473,149.32
			% Balance				0.90%		0.30%		0.19%		1.39%
			# Loans				9		3		1		13
			% # Loans				1.04%		0.35%		0.12%		1.50%
	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		71,218.16		0.00		312,000.00		0.00		383,218.16
			% Balance		0.04%		0.00%		0.17%		0.00%		0.21%
			# Loans		1		0		1		0		2
			% # Loans		0.12%		0.00%		0.12%		0.00%		0.23%
	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		71,218.16		1,596,449.30		855,000.00		333,700.02		2,856,367.48
			% Balance		0.04%		0.90%		0.48%		0.19%		1.60%
			# Loans		1		9		4		1		15
			% # Loans		0.12%		1.04%		0.46%		0.12%		1.73%










Page 20 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

	GROUP 4
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				2,929,019.37		632,000.00		0.00		3,561,019.37
			% Balance				2.42%		0.52%		0.00%		2.95%
			# Loans				5		1		0		6
			% # Loans				2.09%		0.42%		0.00%		2.51%
	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		2,929,019.37		632,000.00		0.00		3,561,019.37
			% Balance		0.00%		2.42%		0.52%		0.00%		2.95%
			# Loans		0		5		1		0		6
			% # Loans		0.00%		2.09%		0.42%		0.00%		2.51%










Page 21 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

	GROUP 5
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				488,967.65		0.00		550,000.00		1,038,967.65
			% Balance				0.64%		0.00%		0.71%		1.35%
			# Loans				2		0		1		3
			% # Loans				0.69%		0.00%		0.34%		1.03%
	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		488,967.65		0.00		550,000.00		1,038,967.65
			% Balance		0.00%		0.64%		0.00%		0.71%		1.35%
			# Loans		0		2		0		1		3
			% # Loans		0.00%		0.69%		0.00%		0.34%		1.03%










Page 22 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

	GROUP 6
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,205,947.59		0.00		0.00		1,205,947.59
			% Balance				1.46%		0.00%		0.00%		1.46%
			# Loans				3		0		0		3
			% # Loans				1.10%		0.00%		0.00%		1.10%
	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		96,600.00		0.00		0.00		0.00		96,600.00
			% Balance		0.12%		0.00%		0.00%		0.00%		0.12%
			# Loans		1		0		0		0		1
			% # Loans		0.37%		0.00%		0.00%		0.00%		0.37%
	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		96,600.00		1,205,947.59		0.00		0.00		1,302,547.59
			% Balance		0.12%		1.46%		0.00%		0.00%		1.58%
			# Loans		1		3		0		0		4
			% # Loans		0.37%		1.10%		0.00%		0.00%		1.47%









Page 23 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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 24 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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 25 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

													Group 6		Group 5




Current


Number of Paid in Full Loans												1		3
Number of Repurchased Loans												0		0
Total Number of Loans Prepaid in Full												1		3
Curtailments Amount												57,207.27		51,458.67
Paid in Full Balance												166,119.60		425,075.66
Repurchased Loans Balance												0.00		0.00
Total Prepayment Amount												223,326.87		476,534.33

Cumulative


Number of Paid in Full Loans												6		7
Number of Repurchased Loans												0		0
Total Number of Loans Prepaid in Full												6		7
Paid in Full Balance												2,373,722.95		1,856,405.37
Repurchased Loans Balance												0.00		0.00
Curtailments Amount												90,549.81		459,907.64
Total Prepayment Amount												2,464,272.76		2,316,313.01

VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




Current


Number of Paid in Full Loans						8		19		5		13		49
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						8		19		5		13		49
Curtailments Amount						154,927.85		18,817.13		302,701.75		13,870.97		598,983.64
Paid in Full Balance						3,951,420.19		4,426,937.97		2,451,622.99		2,729,967.55		14,151,143.96
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Total Prepayment Amount						4,106,348.04		4,445,755.10		2,754,324.74		2,743,838.52		14,750,127.60

Cumulative


Number of Paid in Full Loans						16		42		15		27		113
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						16		42		15		27		113
Paid in Full Balance						7,965,659.91		9,003,818.55		6,501,328.55		6,488,115.69		34,189,051.02
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Curtailments Amount						162,258.51		100,350.64		307,684.54		193,895.15		1,314,646.29
Total Prepayment Amount						8,127,918.42		9,104,169.19		6,809,013.09		6,682,010.84		35,503,697.31





Page 26 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution






Page 27 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

													Group 6		Group 5



SMM												0.27%		0.62%
3 Months Avg SMM												0.97%		0.98%
12 Months Avg SMM												0.97%		0.98%
Avg SMM Since Cut-off												0.97%		0.98%


CPR												3.19%		7.14%
3 Months Avg CPR												11.08%		11.18%
12 Months Avg CPR												11.08%		11.18%
Avg CPR Since Cut-off												11.08%		11.18%


PSA												455.56%		866.03%
3 Months Avg PSA Approximation												2,216.53%		1,792.92%
12 Months Avg PSA Approximation												2,216.53%		1,792.92%
Avg PSA Since Cut-off Approximation												2,216.53%		1,792.92%

VOLUNTARY PREPAYMENTS RATES



							Group 4		Group 3		Group 2		Group 1		Total



SMM						3.29%		2.43%		3.30%		1.85%		2.11%
3 Months Avg SMM						2.15%		1.65%		2.66%		1.48%		1.67%
12 Months Avg SMM						2.15%		1.65%		2.66%		1.48%		1.67%
Avg SMM Since Cut-off						2.15%		1.65%		2.66%		1.48%		1.67%


CPR						33.05%		25.59%		33.15%		20.06%		22.56%
3 Months Avg CPR						22.93%		18.06%		27.68%		16.42%		18.30%
12 Months Avg CPR						22.93%		18.06%		27.68%		16.42%		18.30%
Avg CPR Since Cut-off						22.93%		18.06%		27.68%		16.42%		18.30%


PSA						3,725.63%		2,641.75%		3,995.41%		2,240.83%		2,582.11%
3 Months Avg PSA Approximation						3,333.90%		2,346.18%		4,389.76%		2,356.77%		2,711.75%
12 Months Avg PSA Approximation						3,333.90%		2,346.18%		4,389.76%		2,356.77%		2,711.75%
Avg PSA Since Cut-off Approximation						3,333.91%		2,346.18%		4,389.76%		2,356.77%		2,711.74%







Page 28 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution











Page 29 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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 30 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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

3730235 5			330,392.00		330,391.99			29-Jul-2005		6.750%		FL - 80.00%		Paid Off - 360		01-Apr-2005
			330,392.00

3898043 1			130,000.00		128,504.60			11-Aug-2005		5.625%		CA - 71.43%		Paid Off - 360		01-Aug-2004
3898043 1					128,504.60			11-Aug-2005		5.625%		CA - 71.43%		Paid Off - 360		01-Aug-2004
120380587 3			261,350.00		261,350.00			02-Aug-2005		6.250%		NV - 94.35%		Paid Off - 360		01-Feb-2005
120380587 3					261,350.00			02-Aug-2005		6.250%		NV - 94.35%		Paid Off - 360		01-Feb-2005
120382246 3			191,900.00		190,523.70			19-Jul-2005		4.375%		MI - 79.99%		Paid Off - 360		01-Feb-2005
120382246 3					190,523.70			19-Jul-2005		4.375%		MI - 79.99%		Paid Off - 360		01-Feb-2005
120382913 3			113,700.00		113,615.62			21-Jul-2005		6.250%		OR - 79.91%		Paid Off - 360		01-Feb-2005
120382913 3					113,615.62			21-Jul-2005		6.250%		OR - 79.91%		Paid Off - 360		01-Feb-2005
120382931 3			340,000.00		340,000.00			26-Jul-2005		5.625%		NY - 79.91%		Paid Off - 360		01-Mar-2005
120382931 3					340,000.00			26-Jul-2005		5.625%		NY - 79.91%		Paid Off - 360		01-Mar-2005
120385182 3			252,000.00		251,900.00			20-Jul-2005		6.375%		MA - 80.00%		Paid Off - 360		01-Apr-2005
120385182 3					251,900.00			20-Jul-2005		6.375%		MA - 80.00%		Paid Off - 360		01-Apr-2005
120386049 4			488,000.00		488,000.00			02-Aug-2005		7.000%		MD - 75.08%		Paid Off - 360		01-Apr-2005
120386049 4					488,000.00			02-Aug-2005		7.000%		MD - 75.08%		Paid Off - 360		01-Apr-2005
120386812 3			211,500.00		211,500.00			18-Jul-2005		6.500%		MI - 90.00%		Paid Off - 360		01-Apr-2005
120386812 3					211,500.00			18-Jul-2005		6.500%		MI - 90.00%		Paid Off - 360		01-Apr-2005
120387293 3			189,600.00		189,600.00			01-Aug-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-Apr-2005
120387293 3					189,600.00			01-Aug-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-Apr-2005
120387315 4			484,000.00		484,000.00			01-Aug-2005		5.750%		CA - 79.08%		Paid Off - 360		01-Apr-2005
120387315 4					484,000.00			01-Aug-2005		5.750%		CA - 79.08%		Paid Off - 360		01-Apr-2005
120387735 3			290,000.00		289,928.66			09-Aug-2005		5.875%		VT - 76.32%		Paid Off - 360		01-Mar-2005
120387735 3					289,928.66			09-Aug-2005		5.875%		VT - 76.32%		Paid Off - 360		01-Mar-2005
120387781 3			272,000.00		272,000.00			18-Jul-2005		5.875%		MA - 63.26%		Paid Off - 360		01-Mar-2005
120387781 3					272,000.00			18-Jul-2005		5.875%		MA - 63.26%		Paid Off - 360		01-Mar-2005
120387896 3			192,000.00		192,000.00			29-Jul-2005		6.125%		IL - 80.00%		Paid Off - 360		01-Apr-2005
120387896 3					192,000.00			29-Jul-2005		6.125%		IL - 80.00%		Paid Off - 360		01-Apr-2005
120387926 4			620,000.00		620,000.00			27-Jul-2005		6.500%		CA - 77.50%		Paid Off - 360		01-Mar-2005
120387926 4					620,000.00			27-Jul-2005		6.500%		CA - 77.50%		Paid Off - 360		01-Mar-2005
120387971 1			272,000.00		272,000.00			11-Aug-2005		5.625%		AZ - 80.00%		Paid Off - 360		01-Mar-2005
120387971 1					272,000.00			11-Aug-2005		5.625%		AZ - 80.00%		Paid Off - 360		01-Mar-2005
120389554 4			364,750.00		364,750.00			01-Aug-2005		6.250%		MA - 68.95%		Paid Off - 360		01-Apr-2005
120389554 4					364,750.00			01-Aug-2005		6.250%		MA - 68.95%		Paid Off - 360		01-Apr-2005
120389602 3			136,000.00		136,000.00			10-Aug-2005		6.375%		FL - 80.00%		Paid Off - 360		01-Apr-2005
120389602 3					136,000.00			10-Aug-2005		6.375%		FL - 80.00%		Paid Off - 360		01-Apr-2005
120390432 2			360,000.00		360,000.00			03-Aug-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120390432 2					360,000.00			03-Aug-2005		5.875%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120486884 3			151,858.00		151,857.99			10-Aug-2005		6.500%		AZ - 80.00%		Paid Off - 360		01-May-2005
120486884 3					151,857.99			10-Aug-2005		6.500%		AZ - 80.00%		Paid Off - 360		01-May-2005
120713826 3			204,800.00		204,800.00			29-Jul-2005		6.125%		NV - 80.00%		Paid Off - 360		01-May-2005
120713826 3					204,800.00			29-Jul-2005		6.125%		NV - 80.00%		Paid Off - 360		01-May-2005
120846017 2			500,000.00		500,000.00			15-Aug-2005		7.875%		CA - 74.07%		Paid Off - 360		01-May-2005
120846017 2					500,000.00			15-Aug-2005		7.875%		CA - 74.07%		Paid Off - 360		01-May-2005
120868245 2			840,000.00		840,000.00			01-Aug-2005		5.875%		AZ - 51.69%		Paid Off - 360		01-May-2005
120868245 2					840,000.00			01-Aug-2005		5.875%		AZ - 51.69%		Paid Off - 360		01-May-2005
120870636 4			426,600.00		425,081.96			01-Aug-2005		6.625%		NV - 79.99%		Paid Off - 360		01-Apr-2005
120870636 4					425,081.96			01-Aug-2005		6.625%		NV - 79.99%		Paid Off - 360		01-Apr-2005
120888211 1			199,468.00		199,467.98			03-Aug-2005		5.875%		NV - 80.00%		Paid Off - 360		01-Apr-2005
120888211 1					199,467.98			03-Aug-2005		5.875%		NV - 80.00%		Paid Off - 360		01-Apr-2005
120928817 2			379,774.00		379,774.00			08-Aug-2005		6.750%		CA - 80.00%		Paid Off - 360		01-Apr-2005
120928817 2					379,774.00			08-Aug-2005		6.750%		CA - 80.00%		Paid Off - 360		01-Apr-2005
120948943 1			186,996.00		186,995.98			29-Jul-2008		5.875%		FL - 85.00%		Paid Off - 360		01-Apr-2005
120948943 1					186,995.98			29-Jul-2008		5.875%		FL - 85.00%		Paid Off - 360		01-Apr-2005
120955613 2			371,849.00		371,848.99			11-Aug-2005		5.375%		NV - 80.00%		Paid Off - 360		01-May-2005
120955613 2					371,848.99			11-Aug-2005		5.375%		NV - 80.00%		Paid Off - 360		01-May-2005
120965483 1			173,550.00		173,550.00			20-Jul-2005		6.500%		FL - 79.98%		Paid Off - 360		01-Apr-2005
120965483 1					173,550.00			20-Jul-2005		6.500%		FL - 79.98%		Paid Off - 360		01-Apr-2005
120972440 1			260,720.00		260,720.00			27-Jul-2005		6.875%		FL - 80.00%		Paid Off - 360		01-May-2005
120972440 1					260,720.00			27-Jul-2005		6.875%		FL - 80.00%		Paid Off - 360		01-May-2005
120981108 3			390,000.00		390,000.00			26-Jul-2005		6.125%		CA - 65.00%		Paid Off - 360		01-May-2005
120981108 3					390,000.00			26-Jul-2005		6.125%		CA - 65.00%		Paid Off - 360		01-May-2005
120981585 3			267,150.00		267,150.00			12-Aug-2005		6.000%		CA - 65.00%		Paid Off - 360		01-May-2005
120981585 3					267,150.00			12-Aug-2005		6.000%		CA - 65.00%		Paid Off - 360		01-May-2005
120987918 1			216,032.00		216,032.00			29-Jul-2005		5.750%		CA - 80.00%		Paid Off - 360		01-May-2005
120987918 1					216,032.00			29-Jul-2005		5.750%		CA - 80.00%		Paid Off - 360		01-May-2005
120998917 1			180,000.00		180,000.00			27-Jul-2005		6.375%		NV - 73.75%		Paid Off - 360		01-May-2005
120998917 1					180,000.00			27-Jul-2005		6.375%		NV - 73.75%		Paid Off - 360		01-May-2005
121032837 5			57,000.00		56,983.67			27-Jul-2005		6.875%		MI - 61.14%		Paid Off - 360		01-May-2005
121032837 5					56,983.67			27-Jul-2005		6.875%		MI - 61.14%		Paid Off - 360		01-May-2005
121038262 3			286,800.00		286,800.00			26-Jul-2005		6.000%		CA - 80.00%		Paid Off - 360		01-May-2005
121038262 3					286,800.00			26-Jul-2005		6.000%		CA - 80.00%		Paid Off - 360		01-May-2005
121053487 4			368,689.00		368,668.82			27-Jul-2005		6.625%		CA - 80.00%		Paid Off - 360		01-May-2005
121053487 4					368,668.82					6.625%		CA - 80.00%		Paid Off - 360


Page 31 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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

121106125 1			297,500.00		297,499.00			26-Jul-2005		5.500%		SC - 70.00%		Paid Off - 360		01-May-2005
			297,500.00

121111133 5			37,700.00		37,700.00			27-Jul-2005		6.875%		SC - 71.13%		Paid Off - 360		01-May-2005
121111133 5					37,700.00			27-Jul-2005		6.875%		SC - 71.13%		Paid Off - 360		01-May-2005
121119683 3			191,500.00		191,500.00			26-Jul-2005		5.125%		CA - 79.96%		Paid Off - 360		01-Apr-2005
121119683 3					191,500.00			26-Jul-2005		5.125%		CA - 79.96%		Paid Off - 360		01-Apr-2005
121140021 1			320,000.00		320,000.00			21-Jul-2005		6.625%		CA - 80.00%		Paid Off - 360		01-May-2005
121140021 1					320,000.00			21-Jul-2005		6.625%		CA - 80.00%		Paid Off - 360		01-May-2005
121140127 6			166,400.00		166,119.60			02-Aug-2005		6.875%		CA - 80.00%		Paid Off - 360		01-Jun-2005
121140127 6					166,119.60			02-Aug-2005		6.875%		CA - 80.00%		Paid Off - 360		01-Jun-2005
121168707 3			303,200.00		303,200.00			08-Aug-2005		7.250%		CO - 80.00%		Paid Off - 360		01-May-2005
121168707 3					303,200.00			08-Aug-2005		7.250%		CO - 80.00%		Paid Off - 360		01-May-2005
121171977 3			183,212.00		183,212.00			26-Jul-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-May-2005
121171977 3					183,212.00			26-Jul-2005		6.625%		AZ - 80.00%		Paid Off - 360		01-May-2005
121193098 1			192,000.00		192,000.00			28-Jul-2005		5.875%		AZ - 80.00%		Paid Off - 360		01-Jun-2005
121193098 1					192,000.00			28-Jul-2005		5.875%		AZ - 80.00%		Paid Off - 360		01-Jun-2005
121205914 1			79,200.00		79,197.99			19-Jul-2005		6.500%		NV - 80.00%		Paid Off - 360		01-May-2005
121205914 1					79,197.99			19-Jul-2005		6.500%		NV - 80.00%		Paid Off - 360		01-May-2005
121205929 1			224,000.00		224,000.00			11-Aug-2005		6.000%		CA - 80.00%		Paid Off - 360		01-May-2005
121205929 1					224,000.00			11-Aug-2005		6.000%		CA - 80.00%		Paid Off - 360		01-May-2005
121226473 4			551,920.00		550,919.41			27-Jul-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Jun-2005
121226473 4					550,919.41			27-Jul-2005		6.500%		CA - 80.00%		Paid Off - 360		01-Jun-2005
121341445 4			650,000.00		650,000.00			21-Jul-2005		7.500%		CA - 78.24%		Paid Off - 360		01-May-2005
121341445 4					650,000.00			21-Jul-2005		7.500%		CA - 78.24%		Paid Off - 360		01-May-2005


TOTAL			14,157,110.00		14,151,143.96
TOTAL


Page 32 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



													Group 6		Group 5


Current
Current



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

Cumulative
Cumulative



Number of Loans Liquidated												0		0
Collateral Realized Loss/(Gain) Amount												0.00		0.00
Net Liquidation Proceeds												0.00		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														6,998,581.20
		Fraud Loss Coverage Amt														21,622,413.00
		Bankruptcy Loss Coverage Amt														300,945.00







Page 33 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution





Page 34 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution


DEFAULT SPEEDS



													Group 6		Group 5



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


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


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


Loss Severity Approximation for Current Period												0.00%		0.00%
3 Months Avg Loss Severity Approximation												0.00%		0.00%
12 Months Avg Loss Severity Approximation												0.00%		0.00%
Avg Loss Severity Approximation Since Cut-off												0.00%		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 35 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution








Page 36 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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 37 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 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 38 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
												Group 6		Group 5
						Has Optional Termination Date Reached (0=No,1=Yes)
						Has Sr. Prepay Stepdown Condition Occurred
						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)								No
						Has Sr. Prepay Stepdown Condition Occurred								No
						Has Spl. Haz. Cov. Term. Date Occured (0=No,1=Yes)								No
						Has Fraud Loss Coverage Term. Date Occured								No
						Has Bankrpt Loss Cov. Term. Date Occured								No



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK





Page 39 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
												Group 6		Group 5
Current Senior Percentage												92.760094%		92.781895%
Current Subordinate Percentage												7.239906%		7.218105%
Senior Prepayment Percentage												100.000000%		100.000000%
Subordinate Prepayment Percentage												0.000000%		0.000000%

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Senior Percentage						92.722945%		92.770698%		92.606536%		92.762807%
Current Subordinate Percentage						7.277055%		7.229302%		7.393464%		7.237193%
Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%




Page 40 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
												Group 6		Group 5


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



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 41 of 42
IndyMac INDX Mortgage Loan Trust 2005-AR9

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR9

August 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total


Sched. Payments for 60+Day Delinquent Loans						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior						0.00		0.00		0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior						0.00		0.00		0.00		0.00		0.00
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



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														0.69




Page 42 of 42

IndyMac Indx Mortgage Loan Trust 2005-AR9 8-K