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

            Indymac MBS Inc. (as Depositor under the Pooling and Servicing
                Agreement, dated as April 1, 2005, providing for the
               issuance of IndyMAc INDX Mortgage Loan Trust 2005-AR7
                Mortgage Pass-Through Certificates, Series 2005-AR7)
                 (Exact name of registrant as specified in charter)


                                         DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-21                         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
     May 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:  Jun 02, 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 May 25, 2005.



IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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. REO Report					17
				Certificate Insurer(s)						5. REO Report					17
										6. Foreclosure Report					18

										7. Prepayment Report					19
										8. Prepayment Detail Report					24
										9. Realized Loss Report					25
										9. Realized Loss Report					25
										10. Realized Loss Detail Report					30
										11. Triggers and Adj. Cert. Report					31
				Servicer(s)						11. Triggers and Adj. Cert. Report					31
				Servicer(s)						12. Other Related Information					33
				IndyMac Bank						12. Other Related Information					33
				IndyMac Bank


				Underwriter(s)
				Merrill Lynch


										Total Number of Pages					34
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			April 01, 2005			Brent Hoyler
				Close Date:			April 28, 2005			Administrator
				First Distribution Date:			May 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:			May 25, 2005
										Factor Information:			(800) 735-7777
				Record Date:			April 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 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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		$	112,029,000.00		112,029,000.00		504,014.20		1,660,159.50		2,164,173.70		0.00		0.00		110,368,840.50
1-A-1		$	112,029,000.00		112,029,000.00		504,014.20		1,660,159.50		2,164,173.70		0.00		0.00		110,368,840.50
2-A-1		$	90,388,000.00		90,388,000.00		408,563.37		1,063,516.04		1,472,079.41		0.00		0.00		89,324,483.96
3-A-1		$	168,500,000.00		168,500,000.00		769,558.10		2,178,569.99		2,948,128.09		0.00		0.00		166,321,430.01
3-A-2		$	64,021,000.00		64,021,000.00		292,390.98		827,740.24		1,120,131.22		0.00		0.00		63,193,259.76
3-A-3		$	5,568,000.00		5,568,000.00		25,429.67		71,989.78		97,419.45		0.00		0.00		5,496,010.22
4-A-1		$	92,477,000.00		92,477,000.00		411,017.84		1,205,156.67		1,616,174.51		0.00		0.00		91,271,843.33
5-A-1		$	51,358,000.00		51,358,000.00		239,321.92		760,529.43		999,851.35		0.00		0.00		50,597,470.57
6-A-1		$	58,263,000.00		58,263,000.00		272,488.75		2,080,203.94		2,352,692.69		0.00		0.00		56,182,796.06
7-A-1		$	57,163,000.00		57,163,000.00		257,616.20		305,895.99		563,512.19		0.00		0.00		56,857,104.01
A-R		$	100.00		100.00		0.45		100.00		100.45		0.00		0.00		0.00
B-1		$	19,020,000.00		19,020,000.00		86,447.16		51,295.51		137,742.67		0.00		0.00		18,968,704.49
B-2		$	14,451,000.00		14,451,000.00		65,680.75		38,973.26		104,654.01		0.00		0.00		14,412,026.74
B-3		$	10,648,000.00		10,648,000.00		48,395.86		28,716.85		77,112.71		0.00		0.00		10,619,283.15
B-4		$	8,366,000.00		8,366,000.00		38,024.02		22,562.47		60,586.49		0.00		0.00		8,343,437.53
B-5		$	4,944,000.00		4,944,000.00		22,470.81		13,333.60		35,804.41		0.00		0.00		4,930,666.40
B-6		$	3,425,298.00		3,425,298.00		15,568.21		9,237.77		24,805.98		0.00		0.00		3,416,060.23
P		$	100.00		100.00		29,194.12		0.00		29,194.12		0.00		0.00		100.00

Total			760,621,498.00		760,621,498.00		3,486,182.41		10,317,981.04		13,804,163.45		0.00		0.00		750,303,516.96
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	04/01/05		04/30/05		A-30/360		45660LLJ6		112,029,000.00		1,000.000000		4.498962		14.819016		19.317977	985.180984
2-A-1	04/01/05		04/30/05		A-30/360		45660LLK3		90,388,000.00		1,000.000000		4.520106		11.766120		16.286226	988.233880
3-A-1	04/01/05		04/30/05		A-30/360		45660LLL1		168,500,000.00		1,000.000000		4.567110		12.929199		17.496309	987.070801
3-A-2	04/01/05		04/30/05		A-30/360		45660LLM9		64,021,000.00		1,000.000000		4.567110		12.929199		17.496309	987.070801
3-A-3	04/01/05		04/30/05		A-30/360		45660LLN7		5,568,000.00		1,000.000000		4.567110		12.929199		17.496309	987.070801
4-A-1	04/01/05		04/30/05		A-30/360		45660LLP2		92,477,000.00		1,000.000000		4.444541		13.031961		17.476502	986.968039
5-A-1	04/01/05		04/30/05		A-30/360		45660LLQ0		51,358,000.00		1,000.000000		4.659876		14.808393		19.468269	985.191607
6-A-1	04/01/05		04/30/05		A-30/360		45660LLR8		58,263,000.00		1,000.000000		4.676875		35.703687		40.380562	964.296313
7-A-1	04/01/05		04/30/05		A-30/360		45660LLS6		57,163,000.00		1,000.000000		4.506695		5.351293		9.857988	994.648707
A-R	04/01/05		04/30/05		A-30/360		45660LLT4		100.00		1,000.000000		4.500000		1,000.000000		1,004.500000	0.000000
B-1	04/01/05		04/30/05		A-30/360		45660LLU1		19,020,000.00		1,000.000000		4.545066		2.696925		7.241991	997.303075
B-2	04/01/05		04/30/05		A-30/360		45660LLV9		14,451,000.00		1,000.000000		4.545066		2.696925		7.241991	997.303075
B-3	04/01/05		04/30/05		A-30/360		45660LLW7		10,648,000.00		1,000.000000		4.545066		2.696924		7.241990	997.303076
B-4	04/01/05		04/30/05		A-30/360		45660LLY3		8,366,000.00		1,000.000000		4.545066		2.696924		7.241990	997.303076
B-5	04/01/05		04/30/05		A-30/360		45660LLZ0		4,944,000.00		1,000.000000		4.545067		2.696926		7.241992	997.303074
B-6	04/01/05		04/30/05		A-30/360		45660LMA4		3,425,298.00		1,000.000000		4.545067		2.696924		7.241992	997.303076
P	04/01/05		04/30/05		A-30/360		45660LLX5		100.00		1,000.000000		291,941.200000		0.000000		291,941.200000	1,000.000000



Page 2 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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	112,029,000.00		504,014.20		1,646,269.31		13,890.19		1,660,159.50		2,164,173.70		0.00		0.00		110,368,840.50
2-A-1	90,388,000.00		408,563.37		1,054,617.84		8,898.20		1,063,516.04		1,472,079.41		0.00		0.00		89,324,483.96
3-A-1	168,500,000.00		769,558.10		2,160,342.38		18,227.61		2,178,569.99		2,948,128.09		0.00		0.00		166,321,430.01
3-A-2	64,021,000.00		292,390.98		820,814.72		6,925.52		827,740.24		1,120,131.22		0.00		0.00		63,193,259.76
3-A-3	5,568,000.00		25,429.67		71,387.46		602.32		71,989.78		97,419.45		0.00		0.00		5,496,010.22
4-A-1	92,477,000.00		411,017.84		1,195,073.39		10,083.28		1,205,156.67		1,616,174.51		0.00		0.00		91,271,843.33
5-A-1	51,358,000.00		239,321.92		754,166.25		6,363.18		760,529.43		999,851.35		0.00		0.00		50,597,470.57
6-A-1	58,263,000.00		272,488.75		2,062,799.33		17,404.61		2,080,203.94		2,352,692.69		0.00		0.00		56,182,796.06
7-A-1	57,163,000.00		257,616.20		303,336.63		2,559.36		305,895.99		563,512.19		0.00		0.00		56,857,104.01
A-R	100.00		0.45		99.16		0.84		100.00		100.45		0.00		0.00		0.00
B-1	19,020,000.00		86,447.16		50,866.33		429.18		51,295.51		137,742.67		0.00		0.00		18,968,704.49
B-2	14,451,000.00		65,680.75		38,647.18		326.08		38,973.26		104,654.01		0.00		0.00		14,412,026.74
B-3	10,648,000.00		48,395.86		28,476.58		240.27		28,716.85		77,112.71		0.00		0.00		10,619,283.15
B-4	8,366,000.00		38,024.02		22,373.69		188.78		22,562.47		60,586.49		0.00		0.00		8,343,437.53
B-5	4,944,000.00		22,470.81		13,222.04		111.56		13,333.60		35,804.41		0.00		0.00		4,930,666.40
B-6	3,425,298.00		15,568.21		9,160.48		77.29		9,237.77		24,805.98		0.00		0.00		3,416,060.23
P	100.00		29,194.12		0.00		0.00		0.00		29,194.12		0.00		0.00		100.00

Total	760,621,498.00		3,486,182.41		10,231,652.77		86,328.27		10,317,981.04		13,804,163.45		0.00		0.00		750,303,516.96


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	5.39875%		112,029,000.00		504,014.20		0.00		0.00		0.00		504,014.20		504,014.20		0.00
2-A-1	5.42413%		90,388,000.00		408,563.37		0.00		0.00		0.00		408,563.37		408,563.37		0.00
3-A-1	5.48053%		168,500,000.00		769,558.10		0.00		0.00		0.00		769,558.10		769,558.10		0.00
3-A-2	5.48053%		64,021,000.00		292,390.98		0.00		0.00		0.00		292,390.98		292,390.98		0.00
3-A-3	5.48053%		5,568,000.00		25,429.67		0.00		0.00		0.00		25,429.67		25,429.67		0.00
4-A-1	5.33345%		92,477,000.00		411,017.84		0.00		0.00		0.00		411,017.84		411,017.84		0.00
5-A-1	5.59185%		51,358,000.00		239,321.92		0.00		0.00		0.00		239,321.92		239,321.92		0.00
6-A-1	5.61225%		58,263,000.00		272,488.75		0.00		0.00		0.00		272,488.75		272,488.75		0.00
7-A-1	5.40803%		57,163,000.00		257,616.20		0.00		0.00		0.00		257,616.20		257,616.20		0.00
A-R	5.40000%		100.00		0.45		0.00		0.00		0.00		0.45		0.45		0.00
B-1	5.45408%		19,020,000.00		86,447.16		0.00		0.00		0.00		86,447.16		86,447.16		0.00
B-2	5.45408%		14,451,000.00		65,680.75		0.00		0.00		0.00		65,680.75		65,680.75		0.00
B-3	5.45408%		10,648,000.00		48,395.86		0.00		0.00		0.00		48,395.86		48,395.86		0.00
B-4	5.45408%		8,366,000.00		38,024.02		0.00		0.00		0.00		38,024.02		38,024.02		0.00
B-5	5.45408%		4,944,000.00		22,470.81		0.00		0.00		0.00		22,470.81		22,470.81		0.00
B-6	5.45408%		3,425,298.00		15,568.21		0.00		0.00		0.00		15,568.21		15,568.21		0.00
P	350,329.44000%		100.00		0.00		0.00		0.00		0.00		0.00		29,194.12		0.00

Total			760,621,498.00		3,456,988.29		0.00		0.00		0.00		3,456,988.29		3,486,182.41		0.00



Page 3 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
										Group 7		Group 6		Group 5
Principal Collections										322,752.84		2,109,869.50		761,517.21
Principal Withrawals										0.00		0.00		0.00
Principal Other Accounts										0.00		0.00		0.00
TOTAL NET PRINCIPAL										322,752.84		2,109,869.50		761,517.21
Interest Collections										287,236.73		303,509.67		265,556.72
Interest Withdrawals										-0.00		-0.00		-0.00
Interest Other Accounts										0.00		29,194.12		0.00
Interest Fees										-7,215.07		-7,322.40		-5,419.80
TOTAL NET INTEREST										280,021.67		325,381.39		260,136.92
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION										602,783.40		2,435,308.98		1,021,675.10

SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						1,247,519.24		3,135,944.04		1,064,433.85		1,675,944.35		10,317,981.01
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						1,247,519.24		3,135,944.04		1,064,433.85		1,675,944.35		10,317,981.01
Interest Collections						459,281.27		1,210,098.35		454,592.91		563,247.11		3,543,522.77
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		0.00		0.00		0.00		29,194.12
Interest Fees						-12,519.25		-28,162.05		-10,500.35		-15,295.58		-86,434.47
TOTAL NET INTEREST						446,762.02		1,181,936.30		444,092.56		547,951.53		3,486,282.42
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						1,694,315.61		4,317,966.68		1,508,555.72		2,223,942.02		13,804,547.50





Page 4 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
											Group 7		Group 6		Group 5
Scheduled Principal Received											9,075.44		10,164.02		12,344.86
Curtailments											169.76		1,964.56		2,151.38
Prepayments In Full											111,898.75		1,737,082.83		747,000.00
Repurchased/Substitutions											201,600.00		360,600.00		0.00
Liquidations											0.00		0.00		0.00
Insurance Principal											0.00		0.00		0.00
Other Additional Principal											0.00		0.00		0.00
Delinquent Principal											-7,017.56		-7,971.42		-8,886.91
Realized Losses											-0.00		-0.00		-0.00
Advanced Principal											7,017.56		7,971.42		8,886.91
TOTAL PRINCIPAL COLLECTED											322,752.84		2,109,869.50		761,517.21
PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							11,084.42		24,530.20		11,472.04		7,657.29		86,328.27
Curtailments							13,208.47		8,174.32		5,582.50		4,805.04		36,056.03
Prepayments In Full							704,792.00		2,407,153.18		1,047,350.00		1,475,035.88		8,230,312.64
Repurchased/Substitutions							518,400.00		696,000.00		0.00		188,400.00		1,965,000.00
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							-8,441.29		-19,316.76		-8,958.20		-4,972.61		-65,564.75
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Advanced Principal							8,441.29		19,316.76		8,958.20		4,972.61		65,564.75
TOTAL PRINCIPAL COLLECTED							1,247,519.24		3,135,944.04		1,064,433.85		1,675,944.35		10,317,981.01


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK





Page 5 of 34
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2005-AR7

May 25, 2005 Distribution

PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
										Group 7		Group 6		Group 5
TOTAL PRINCIPAL OTHER ACCOUNTS										0.00		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 7		Group 6		Group 5
Scheduled Interest										298,820.51		314,449.86		277,838.05
Repurchased/Substitution Interest										903.00		1,818.35		0.00
Liquidation Interest										0.00		0.00		0.00
Insurance Interest										0.00		0.00		0.00
Other Additional Interest										0.00		0.00		0.00
Prepayment Interest Shortfalls										-0.00		-609.27		-0.00
Delinquent Interest										-192,291.20		-204,991.44		-195,790.92
Compensating Interest										0.00		609.27		0.00
Civil Relief Act Shortfalls										-0.00		-0.00		-0.00
Interest Advanced										179,804.42		192,232.90		183,509.60
TOTAL INTEREST COLLECTED										287,236.73		303,509.67		265,556.72
INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						476,093.01		1,260,490.26		475,245.44		585,581.82		3,688,518.95
Repurchased/Substitution Interest						2,542.00		3,505.00		0.00		981.25		9,749.60
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						-0.00		-1,332.08		-0.00		-1,534.47		-3,475.82
Delinquent Interest						-296,324.95		-843,169.47		-318,451.41		-360,792.83		-2,411,812.22
Compensating Interest						0.00		1,332.08		0.00		1,534.47		3,475.82
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						276,971.22		789,272.56		297,798.87		337,476.88		2,257,066.45
TOTAL INTEREST COLLECTED						459,281.27		1,210,098.35		454,592.91		563,247.11		3,543,522.77




Page 6 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

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Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
										Group 7		Group 6		Group 5
Prepayment Charges
TOTAL INTEREST OTHER ACCOUNTS										0.00		29,194.12		0.00

INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Charges														29,194.12
TOTAL INTEREST OTHER ACCOUNTS						0.00		0.00		0.00		0.00		29,194.12





Page 7 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

INTEREST - FEES
INTEREST - FEES
										Group 7		Group 6		Group 5
Current Servicing Fees										6,930.28		7,032.14		5,163.94
Trustee Fees										284.78		290.26		255.86
TOTAL INTEREST FEES										7,215.07		7,322.40		5,419.80

INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						12,058.54		26,975.91		10,050.04		14,737.46		82,948.32
Trustee Fees						460.71		1,186.13		450.30		558.12		3,486.18
TOTAL INTEREST FEES						12,519.25		28,162.05		10,500.35		15,295.58		86,434.47




Page 8 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

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Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK



Page 9 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

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Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Collateral Report


COLLATERAL



											Group 7		Group 6		Group 5



Loan Count:


Original										234		225		160
Prior										234		225		160
Prefunding										0		0		0
Scheduled Paid Offs										-0		-0		-0
Full Voluntary Prepayments										-1		-5		-1
Repurchases										-1		-2		-0
Liquidations										-0		-0		-0
Current										232		218		159
Principal Balance:


Original										62,134,598.37		63,330,171.15		55,824,856.61
Prior										62,134,598.37		63,330,171.15		55,824,856.61
Prefunding										0.00		0.00		0.00
Scheduled Principal										-9,075.44		-10,164.02		-12,344.86
Partial Prepayments										-169.76		-1,964.56		-2,151.38
Full Voluntary Prepayments										-111,898.75		-1,737,082.83		-747,000.00
Repurchases										-201,600.00		-360,600.00		-0.00
Liquidations										-0.00		-0.00		-0.00
Current										61,811,854.42		61,220,359.74		55,063,360.37

COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



Loan Count:
Loan Count:


Original						359		921		194		536		2,629
Prior						359		921		194		536		2,629
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-2		-8		-2		-7		-26
Repurchases						-2		-2		-0		-1		-8
Liquidations						-0		-0		-0		-0		-0
Current						355		911		192		528		2,595
Principal Balance:


Original						100,519,265.51		258,793,022.85		98,248,255.76		121,770,943.68		760,621,113.93
Prior						100,519,265.51		258,793,022.85		98,248,255.76		121,770,943.68		760,621,113.93
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-11,084.42		-24,530.20		-11,472.04		-7,657.29		-86,328.27
Partial Prepayments						-13,208.47		-8,174.32		-5,582.50		-4,805.04		-36,056.03
Full Voluntary Prepayments						-704,792.00		-2,407,153.18		-1,047,350.00		-1,475,035.88		-8,230,312.64
Repurchases						-518,400.00		-696,000.00		-0.00		-188,400.00		-1,965,000.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						99,271,780.62		255,657,165.15		97,183,851.22		120,095,045.47		750,303,416.99







Page 10 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

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Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK







Page 11 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
										Group 7		Group 6		Group 5
Weighted Average Coupon Original										5.78853%		5.99275%		5.97235%
Weighted Average Coupon Prior										5.78853%		5.99275%		5.97235%
Weighted Average Coupon Current										5.78853%		5.99275%		5.97235%
Weighted Average Months to Maturity Original										358		358		358
Weighted Average Months to Maturity Prior										358		358		358
Weighted Average Months to Maturity Current										358		358		358
Weighted Avg Remaining Amortization Term Original										358		358		358
Weighted Avg Remaining Amortization Term Prior										358		358		358
Weighted Avg Remaining Amortization Term Current										358		358		358
Weighted Average Seasoning Original										2.49		1.52		1.50
Weighted Average Seasoning Prior										2.49		1.52		1.50
Weighted Average Seasoning Current										2.49		1.52		1.50
CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						5.71395%		5.86103%		5.80463%		5.78033%		5.83460%
Weighted Average Coupon Prior						5.71395%		5.86103%		5.80463%		5.78033%		5.83460%
Weighted Average Coupon Current						5.71395%		5.86103%		5.80463%		5.78033%		5.83460%
Weighted Average Months to Maturity Original						358		358		358		358		358
Weighted Average Months to Maturity Prior						358		358		358		358		358
Weighted Average Months to Maturity Current						358		358		358		358		358
Weighted Avg Remaining Amortization Term Original						358		358		358		358		358
Weighted Avg Remaining Amortization Term Prior						358		358		358		358		358
Weighted Avg Remaining Amortization Term Current						358		358		358		358		358
Weighted Average Seasoning Original						1.71		2.36		1.90		2.31		2.09
Weighted Average Seasoning Prior						1.71		2.36		1.90		2.31		2.09
Weighted Average Seasoning Current						1.71		2.36		1.90		2.31		2.09





Page 12 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution






Page 13 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
										Group 7		Group 6		Group 5
Weighted Average Margin Original										2.54139%		2.72509%		2.75000%
Weighted Average Margin Prior										2.54139%		2.72509%		2.75000%
Weighted Average Margin Current										2.54139%		2.72509%		2.75000%
Weighted Average Max Rate Original										11.71577%		11.92154%		11.96160%
Weighted Average Max Rate Prior										11.71577%		11.92154%		11.96160%
Weighted Average Max Rate Current										11.71577%		11.92154%		11.96160%
Weighted Average Min Rate Original										0.13445%		0.20208%		0.00000%
Weighted Average Min Rate Prior										0.13445%		0.20208%		0.00000%
Weighted Average Min Rate Current										0.13445%		0.20208%		0.00000%
Weighted Average Cap Up Original										1.78468%		1.69384%		1.00000%
Weighted Average Cap Up Prior										1.78468%		1.69384%		1.00000%
Weighted Average Cap Up Current										1.78468%		1.69384%		1.00000%
Weighted Average Cap Down Original										1.78468%		1.69384%		1.00000%
Weighted Average Cap Down Prior										1.78468%		1.69384%		1.00000%
Weighted Average Cap Down Current										1.78468%		1.69384%		1.00000%

ARM CHARACTERISTICS
ARM CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Margin Original						2.71827%		2.57331%		2.65427%		2.68105%		2.64317%
Weighted Average Margin Prior						2.71827%		2.57331%		2.65427%		2.68105%		2.64317%
Weighted Average Margin Current						2.71827%		2.57331%		2.65427%		2.68105%		2.64317%
Weighted Average Max Rate Original						11.58505%		11.56382%		11.64096%		11.68619%		11.66757%
Weighted Average Max Rate Prior						11.58505%		11.56382%		11.64096%		11.68619%		11.66757%
Weighted Average Max Rate Current						11.58505%		11.56382%		11.64096%		11.68619%		11.66757%
Weighted Average Min Rate Original						0.09484%		0.09664%		0.16356%		0.05523%		0.10319%
Weighted Average Min Rate Prior						0.09484%		0.09664%		0.16356%		0.05523%		0.10319%
Weighted Average Min Rate Current						0.09484%		0.09664%		0.16356%		0.05523%		0.10319%
Weighted Average Cap Up Original						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%
Weighted Average Cap Up Prior						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%
Weighted Average Cap Up Current						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%
Weighted Average Cap Down Original						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%
Weighted Average Cap Down Prior						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%
Weighted Average Cap Down Current						1.08316%		1.65317%		1.64407%		1.67468%		1.54630%





Page 14 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

SERVICING FEES & ADVANCES

											Group 7		Group 6		Group 5




Current Servicing Fees										6,930.28		7,032.14		5,163.94
Delinquent Servicing Fees										12,486.78		12,758.54		12,281.33
TOTAL SERVICING FEES										19,417.06		19,790.68		17,445.27


Total Servicing Fees										19,417.06		19,790.68		17,445.27
Compensating Interest										-0.00		-609.27		-0.00
Delinquent Servicing Fees										-12,486.78		-12,758.54		-12,281.33
COLLECTED SERVICING FEES										6,930.28		6,422.87		5,163.94


Total Advanced Interest										179,804.42		192,232.90		183,509.60
Total Advanced Principal										7,017.56		7,971.42		8,886.91
Aggregate Advances with respect to this Distribution										186,821.98		200,204.32		192,396.51

SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						12,058.54		26,975.91		10,050.04		14,737.46		82,948.32
Delinquent Servicing Fees						19,353.73		53,896.91		20,652.54		23,315.96		154,745.79
TOTAL SERVICING FEES						31,412.27		80,872.82		30,702.58		38,053.42		237,694.10


Total Servicing Fees						31,412.27		80,872.82		30,702.58		38,053.42		237,694.10
Compensating Interest						-0.00		-1,332.08		-0.00		-1,534.47		-3,475.82
Delinquent Servicing Fees						-19,353.73		-53,896.91		-20,652.54		-23,315.96		-154,745.79
COLLECTED SERVICING FEES						12,058.54		25,643.83		10,050.04		13,202.99		79,472.48


Total Advanced Interest						276,971.22		789,272.56		297,798.87		337,476.88		2,257,066.45
Total Advanced Principal						8,441.29		19,316.76		8,958.20		4,972.61		65,564.75
Aggregate Advances with respect to this Distribution						285,412.51		808,589.32		306,757.07		342,449.49		2,322,631.20







Page 15 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

ADDITIONAL COLLATERAL INFORMATION
										Group 7		Group 6		Group 5
Prepayment Interest Shortfall (PPIS)										0.00		609.27		0.00
Compensating Interest										-0.00		-609.27		-0.00
Net Prepayment Interest Shortfall (PPIS)										0.00		0.00		0.00
Weighted Average Net Mortgage Rate										5.408034%		6.165429%		5.591851%

ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						0.00		1,332.08		0.00		1,534.47		3,475.82
Compensating Interest						-0.00		-1,332.08		-0.00		-1,534.47		-3,475.82
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Weighted Average Net Mortgage Rate						5.333449%		5.480532%		5.424128%		5.399825%		5.500161%




Page 16 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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 17 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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 18 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

											Group 7		Group 6		Group 5




Current


Number of Paid in Full Loans										1		5		1
Number of Repurchased Loans										1		2		0
Total Number of Loans Prepaid in Full										2		7		1
Curtailments Amount										169.76		1,964.56		2,151.38
Paid in Full Balance										111,898.75		1,737,082.83		747,000.00
Repurchased Loans Balance										201,600.00		360,600.00		0.00
Total Prepayment Amount										313,668.51		2,099,647.39		749,151.38

Cumulative


Number of Paid in Full Loans										1		5		1
Number of Repurchased Loans										1		2		0
Total Number of Loans Prepaid in Full										2		7		1
Paid in Full Balance										111,898.75		1,737,082.83		747,000.00
Repurchased Loans Balance										201,600.00		360,600.00		0.00
Curtailments Amount										169.76		1,964.56		2,151.38
Total Prepayment Amount										313,668.51		2,099,647.39		749,151.38

VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




Current


Number of Paid in Full Loans						2		8		2		7		26
Number of Repurchased Loans						2		2		0		1		8
Total Number of Loans Prepaid in Full						4		10		2		8		34
Curtailments Amount						13,208.47		8,174.32		5,582.50		4,805.04		36,056.03
Paid in Full Balance						704,792.00		2,407,153.18		1,047,350.00		1,475,035.88		8,230,312.64
Repurchased Loans Balance						518,400.00		696,000.00		0.00		188,400.00		1,965,000.00
Total Prepayment Amount						1,236,400.47		3,111,327.50		1,052,932.50		1,668,240.92		10,231,368.67

Cumulative


Number of Paid in Full Loans						2		8		2		7		26
Number of Repurchased Loans						2		2		0		1		8
Total Number of Loans Prepaid in Full						4		10		2		8		34
Paid in Full Balance						704,792.00		2,407,153.18		1,047,350.00		1,475,035.88		8,230,312.64
Repurchased Loans Balance						518,400.00		696,000.00		0.00		188,400.00		1,965,000.00
Curtailments Amount						13,208.47		8,174.32		5,582.50		4,805.04		36,056.03
Total Prepayment Amount						1,236,400.47		3,111,327.50		1,052,932.50		1,668,240.92		10,231,368.67





Page 19 of 34
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Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution






Page 20 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

											Group 7		Group 6		Group 5



SMM										0.50%		3.32%		1.34%
3 Months Avg SMM										0.50%		3.32%		1.34%
12 Months Avg SMM										0.50%		3.32%		1.34%
Avg SMM Since Cut-off										0.50%		3.32%		1.34%


CPR										5.89%		33.28%		14.97%
3 Months Avg CPR										5.89%		33.28%		14.97%
12 Months Avg CPR										5.89%		33.28%		14.97%
Avg CPR Since Cut-off										5.89%		33.28%		14.97%


PSA										1,184.14%		10,935.49%		4,986.64%
3 Months Avg PSA Approximation										1,184.13%		10,935.49%		4,986.63%
12 Months Avg PSA Approximation										1,184.13%		10,935.49%		4,986.63%
Avg PSA Since Cut-off Approximation										1,184.13%		10,935.49%		4,986.63%

VOLUNTARY PREPAYMENTS RATES



							Group 4		Group 3		Group 2		Group 1		Total



SMM						1.23%		1.20%		1.07%		1.37%		1.35%
3 Months Avg SMM						1.23%		1.20%		1.07%		1.37%		1.35%
12 Months Avg SMM						1.23%		1.20%		1.07%		1.37%		1.35%
Avg SMM Since Cut-off						1.23%		1.20%		1.07%		1.37%		1.35%


CPR						13.80%		13.51%		12.13%		15.26%		15.00%
3 Months Avg CPR						13.80%		13.51%		12.13%		15.26%		15.00%
12 Months Avg CPR						13.80%		13.51%		12.13%		15.26%		15.00%
Avg CPR Since Cut-off						13.80%		13.51%		12.13%		15.26%		15.00%


PSA						4,027.52%		2,862.21%		3,195.79%		3,309.26%		3,597.23%
3 Months Avg PSA Approximation						4,027.52%		2,862.21%		3,195.79%		3,309.26%		3,597.24%
12 Months Avg PSA Approximation						4,027.52%		2,862.21%		3,195.79%		3,309.26%		3,597.24%
Avg PSA Since Cut-off Approximation						4,027.52%		2,862.21%		3,195.79%		3,309.26%		3,597.24%







Page 21 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
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2005-AR7

May 25, 2005 Distribution











Page 22 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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 23 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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

120091103 4			204,792.00		204,792.00			03-May-2005		6.125%		CA - 80.00%		Paid Off - 360		01-Apr-2005
			204,792.00

120372688 3			68,000.00		68,000.00			06-May-2005		6.875%		NM - 80.00%		Paid Off - 360		01-Nov-2004
120372688 3					68,000.00			06-May-2005		6.875%		NM - 80.00%		Paid Off - 360		01-Nov-2004
120383347 3			153,000.00		152,592.16			26-Apr-2005		6.750%		VT - 82.70%		Paid Off - 360		01-Jan-2005
120383347 3					152,592.16			26-Apr-2005		6.750%		VT - 82.70%		Paid Off - 360		01-Jan-2005
120383352 3			213,750.00		213,750.00			27-Apr-2005		6.625%		NJ - 95.00%		Paid Off - 360		01-Mar-2005
120383352 3					213,750.00			27-Apr-2005		6.625%		NJ - 95.00%		Paid Off - 360		01-Mar-2005
120384868 6			646,750.00		646,750.00			02-May-2005		5.625%		DC - 61.60%		Paid Off - 360		01-Mar-2005
120384868 6					646,750.00			02-May-2005		5.625%		DC - 61.60%		Paid Off - 360		01-Mar-2005
120386328 6			242,400.00		241,739.01			21-Apr-2005		6.500%		FL - 74.97%		Paid Off - 360		01-Feb-2005
120386328 6					241,739.01			21-Apr-2005		6.500%		FL - 74.97%		Paid Off - 360		01-Feb-2005
120387224 7			112,000.00		111,898.75			11-May-2005		6.500%		CA - 76.00%		Paid Off - 360		01-Apr-2005
120387224 7					111,898.75			11-May-2005		6.500%		CA - 76.00%		Paid Off - 360		01-Apr-2005
120455211 1			99,400.00		99,400.00			05-May-2005		5.500%		VA - 79.90%		Paid Off - 360		01-Dec-2004
120455211 1					99,400.00			05-May-2005		5.500%		VA - 79.90%		Paid Off - 360		01-Dec-2004
120515426 6			173,000.00		172,181.82			25-Apr-2005		7.274%		VA - 82.38%		Paid Off - 360		01-Nov-2004
120515426 6					172,181.82			25-Apr-2005		7.274%		VA - 82.38%		Paid Off - 360		01-Nov-2004
120516248 1			292,000.00		291,938.80			25-Apr-2005		7.375%		CA - 80.00%		Paid Off - 360		01-Dec-2004
120516248 1					291,938.80			25-Apr-2005		7.375%		CA - 80.00%		Paid Off - 360		01-Dec-2004
120614800 1			205,200.00		205,200.00			20-Apr-2005		6.500%		VA - 95.00%		Paid Off - 360		01-Feb-2005
120614800 1					205,200.00			20-Apr-2005		6.500%		VA - 95.00%		Paid Off - 360		01-Feb-2005
120669664 1			40,500.00		40,449.48			10-May-2005		8.375%		MI - 90.00%		Paid Off - 360		01-Mar-2005
120669664 1					40,449.48			10-May-2005		8.375%		MI - 90.00%		Paid Off - 360		01-Mar-2005
120729635 2			635,350.00		635,350.00			02-May-2005		5.625%		CA - 80.00%		Paid Off - 360		01-May-2005
120729635 2					635,350.00			02-May-2005		5.625%		CA - 80.00%		Paid Off - 360		01-May-2005
120834514 5			747,000.00		747,000.00			13-May-2005		6.000%		CA - 64.96%		Paid Off - 360		01-Apr-2005
120834514 5					747,000.00			13-May-2005		6.000%		CA - 64.96%		Paid Off - 360		01-Apr-2005
120869550 1			295,838.00		295,838.00			21-Apr-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Apr-2005
120869550 1					295,838.00			21-Apr-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Apr-2005
120891634 3			320,812.00		320,812.00			28-Apr-2005		6.375%		VA - 80.00%		Paid Off - 360		01-Mar-2005
120891634 3					320,812.00			28-Apr-2005		6.375%		VA - 80.00%		Paid Off - 360		01-Mar-2005
120906681 3			609,000.00		609,000.00			21-Apr-2005		5.625%		CA - 74.27%		Paid Off - 360		01-Apr-2005
120906681 3					609,000.00			21-Apr-2005		5.625%		CA - 74.27%		Paid Off - 360		01-Apr-2005
120908920 1			280,000.00		279,009.60			21-Apr-2005		5.125%		CA - 58.33%		Paid Off - 360		01-Feb-2005
120908920 1					279,009.60			21-Apr-2005		5.125%		CA - 58.33%		Paid Off - 360		01-Feb-2005
120913538 3			72,000.00		72,000.00			02-May-2005		6.750%		WI - 80.00%		Paid Off - 360		01-Apr-2005
120913538 3					72,000.00			02-May-2005		6.750%		WI - 80.00%		Paid Off - 360		01-Apr-2005
120962184 6			222,800.00		222,800.00			11-May-2005		6.250%		FL - 80.00%		Paid Off - 360		01-May-2005
120962184 6					222,800.00			11-May-2005		6.250%		FL - 80.00%		Paid Off - 360		01-May-2005
120969046 1			263,200.00		263,200.00			13-May-2005		6.125%		CO - 79.78%		Paid Off - 360		01-Apr-2005
120969046 1					263,200.00			13-May-2005		6.125%		CO - 79.78%		Paid Off - 360		01-Apr-2005
120992663 3			328,000.00		328,000.00			05-May-2005		5.375%		CA - 80.00%		Paid Off - 360		01-Apr-2005
120992663 3					328,000.00			05-May-2005		5.375%		CA - 80.00%		Paid Off - 360		01-Apr-2005
121001708 4			500,000.00		500,000.00			11-May-2005		7.000%		MA - 74.07%		Paid Off - 360		01-May-2005
121001708 4					500,000.00			11-May-2005		7.000%		MA - 74.07%		Paid Off - 360		01-May-2005
121013128 2			412,000.00		412,000.00			02-May-2005		5.375%		GA - 71.03%		Paid Off - 360		01-Apr-2005
121013128 2					412,000.00			02-May-2005		5.375%		GA - 71.03%		Paid Off - 360		01-Apr-2005
121106999 3			643,000.00		642,999.02			05-May-2005		5.875%		IL - 67.68%		Paid Off - 360		01-Apr-2005
121106999 3					642,999.02			05-May-2005		5.875%		IL - 67.68%		Paid Off - 360		01-Apr-2005
121219237 6			453,612.00		453,612.00			04-May-2005		6.500%		VA - 80.00%		Paid Off - 360		01-May-2005
121219237 6					453,612.00			04-May-2005		6.500%		VA - 80.00%		Paid Off - 360		01-May-2005
120167050 3			288,000.00		288,000.00			29-Apr-2005		5.750%		NY - 90.00%		Repur/Subs - 360		01-Sep-2004
120167050 3					288,000.00			29-Apr-2005		5.750%		NY - 90.00%		Repur/Subs - 360		01-Sep-2004
120798567 1			188,400.00		188,400.00			30-Apr-2005		6.250%		FL - 80.00%		Repur/Subs - 360		01-May-2005
120798567 1					188,400.00			30-Apr-2005		6.250%		FL - 80.00%		Repur/Subs - 360		01-May-2005
120960465 3			408,000.00		408,000.00			30-Apr-2005		6.250%		CT - 80.00%		Repur/Subs - 360		01-Jun-2005
120960465 3					408,000.00			30-Apr-2005		6.250%		CT - 80.00%		Repur/Subs - 360		01-Jun-2005
120979637 4			192,000.00		192,000.00			30-Apr-2005		6.750%		IL - 80.00%		Repur/Subs - 360		01-May-2005
120979637 4					192,000.00			30-Apr-2005		6.750%		IL - 80.00%		Repur/Subs - 360		01-May-2005
121006506 4			326,400.00		326,400.00			30-Apr-2005		5.375%		CA - 80.00%		Repur/Subs - 360		01-May-2005
121006506 4					326,400.00			30-Apr-2005		5.375%		CA - 80.00%		Repur/Subs - 360		01-May-2005
121024595 6			101,600.00		101,600.00			30-Apr-2005		6.500%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121024595 6					101,600.00			30-Apr-2005		6.500%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121058744 7			201,600.00		201,600.00			30-Apr-2005		5.375%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121058744 7					201,600.00			30-Apr-2005		5.375%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121104162 6			259,000.00		259,000.00			30-Apr-2005		5.875%		CA - 70.00%		Repur/Subs - 360		01-Apr-2005
121104162 6					259,000.00			30-Apr-2005		5.875%		CA - 70.00%		Repur/Subs - 360		01-Apr-2005


TOTAL			10,198,404.00		10,195,312.64
TOTAL


Page 24 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



											Group 7		Group 6		Group 5


Current
Current



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

Cumulative
Cumulative



Number of Loans Liquidated										0		0		0
Collateral Realized Loss/(Gain) Amount										0.00		0.00		0.00
Net Liquidation Proceeds										0.00		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														7,682,810.00
		Fraud Loss Coverage Amt														22,818,638.00
		Bankruptcy Loss Coverage Amt						0.00								318,000.00







Page 25 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution





Page 26 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution


DEFAULT SPEEDS



											Group 7		Group 6		Group 5



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


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


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


Loss Severity Approximation for Current Period										0.00%		0.00%		0.00%
3 Months Avg Loss Severity Approximation										0.00%		0.00%		0.00%
12 Months Avg Loss Severity Approximation										0.00%		0.00%		0.00%
Avg Loss Severity Approximation Since Cut-off										0.00%		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 27 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution








Page 28 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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 29 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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 30 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
										Group 7		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 31 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
										Group 7		Group 6		Group 5
Current Senior Percentage												91.998663%		91.998445%
Current Subordinate Percentage												8.001337%		8.001555%
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						91.999279%		91.999775%		91.999598%		91.999862%
Current Subordinate Percentage						8.000721%		8.000225%		8.000402%		8.000138%
Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%




Page 32 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
										Group 7		Group 6		Group 5


Sched. Payments for 60+Day Delinquent Loans										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior										0.00		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 33 of 34
IndyMac INDX Mortgage Loan Trust 2005-AR7

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR7

May 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														0.00




Page 34 of 34

IndyMac INDX Mortgage Loan Trust 2005-AR7 8-K