
                                       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):  June 27, 2005
                          (Date of earliest event reported)

            Indymac MBS Inc (as Depositor under the Pooling and Servicing
                Agreement, dated as January 1, 2005, providing for the
               issuance of IndyMAc INDX Mortgage Loan Trust 2005-AR1
                Mortgage Pass-Through Certificates, Series 2005-AR1)
                 (Exact name of registrant as specified in charter)


                                        DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-10                         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
     June 27, 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 30, 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 June 27, 2005.



IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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					6
										4. Collateral Report					7
				Certificate Insurer(s)						5. Delinquency Report					10
				Certificate Insurer(s)						5. Delinquency Report					10
										6. REO Report					11

										7. Foreclosure Report					12
										8. Prepayment Report					13
										9. Prepayment Detail Report					16
										9. Prepayment Detail Report					16
										10. Realized Loss Report					19
										11. Realized Loss Detail Report					22
				Servicer(s)						11. Realized Loss Detail Report					22
				Servicer(s)						12. Triggers and Adj. Cert. Report					23
				IndyMac Bank						12. Triggers and Adj. Cert. Report					23
				IndyMac Bank						13. Other Related Information					24
										13. Other Related Information					24


				Underwriter(s)
				Countrywide Funding Corporation


										Total Number of Pages					24
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			January 01, 2005			Brent Hoyler
				Close Date:			January 28, 2005			Administrator
				First Distribution Date:			February 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:			June 27, 2005
										Factor Information:			(800) 735-7777
				Record Date:			May 31, 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 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Certificate Payment Report
Current Period Distribution - Trust
					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		$	180,869,000.00		165,628,870.65		740,235.82		5,122,433.06		5,862,668.88		0.00		0.00		160,506,437.59
1-A-1		$	180,869,000.00		165,628,870.65		740,235.82		5,122,433.06		5,862,668.88		0.00		0.00		160,506,437.59
1-A-2		$	3,072,000.00		2,813,151.46		12,572.66		87,002.83		99,575.49		0.00		0.00		2,726,148.63
2-A-1		$	141,328,000.00		118,302,745.90		524,130.36		7,731,619.41		8,255,749.77		0.00		0.00		110,571,126.49
3-A-1		$	180,342,000.00		169,449,041.61		760,299.26		3,840,274.99		4,600,574.25		0.00		0.00		165,608,766.62
3-A-2		$	10,054,000.00		9,446,721.58		42,386.40		214,093.91		256,480.31		0.00		0.00		9,232,627.67
4-A-1		$	128,145,000.00		121,149,820.66		548,272.07		7,643,382.76		8,191,654.83		0.00		0.00		113,506,437.90
B-1		$	28,786,000.00		28,708,062.60		128,530.29		3,787.40		132,317.69		0.00		0.00		28,704,275.20
B-2		$	9,829,000.00		9,802,388.23		43,886.76		1,293.21		45,179.97		0.00		0.00		9,801,095.02
B-3		$	6,319,000.00		6,301,891.46		28,214.51		831.40		29,045.91		0.00		0.00		6,301,060.06
B-4		$	5,617,000.00		5,601,792.11		25,080.06		739.03		25,819.09		0.00		0.00		5,601,053.08
B-5		$	4,213,000.00		4,201,593.40		18,811.16		554.31		19,365.47		0.00		0.00		4,201,039.09
B-6		$	3,509,426.03		3,499,924.29		15,669.68		461.73		16,131.41		0.00		0.00		3,499,462.56
A-R		$	100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
P		$	0.00		100.00		11,259.00		0.00		11,259.00		0.00		0.00		100.00


Total			702,083,526.03		644,906,103.95		2,899,348.03		24,646,474.04		27,545,822.07		0.00		0.00		620,259,629.91
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	05/01/05		05/30/05		A-30/360		45660LDB2		180,869,000.00		915.739406		4.092663		28.321233		32.413896	887.418173
1-A-2	05/01/05		05/30/05		A-30/360		45660LDC0		3,072,000.00		915.739408		4.092663		28.321234		32.413896	887.418174
2-A-1	05/01/05		05/30/05		A-30/360		45660LDD8		141,328,000.00		837.079318		3.708609		54.706919		58.415528	782.372400
3-A-1	05/01/05		05/30/05		A-30/360		45660LDE6		180,342,000.00		939.598328		4.215875		21.294402		25.510276	918.303926
3-A-2	05/01/05		05/30/05		A-30/360		45660LDF3		10,054,000.00		939.598327		4.215874		21.294401		25.510276	918.303926
4-A-1	05/01/05		05/30/05		A-30/360		45660LDG1		128,145,000.00		945.411999		4.278529		59.646360		63.924888	885.765640
B-1	05/01/05		05/30/05		A-30/360		45660LDH9		28,786,000.00		997.292524		4.465028		0.131571		4.596599	997.160953
B-2	05/01/05		05/30/05		A-30/360		45660LDJ5		9,829,000.00		997.292525		4.465028		0.131571		4.596599	997.160954
B-3	05/01/05		05/30/05		A-30/360		45660LDK2		6,319,000.00		997.292524		4.465028		0.131571		4.596599	997.160953
B-4	05/01/05		05/30/05		A-30/360		45660LDL0		5,617,000.00		997.292524		4.465028		0.131570		4.596598	997.160954
B-5	05/01/05		05/30/05		A-30/360		45660LDM8		4,213,000.00		997.292523		4.465027		0.131571		4.596599	997.160952
B-6	05/01/05		05/30/05		A-30/360		45660LDN6		3,509,426.03		997.292509		4.465026		0.131569		4.596595	997.160940
A-R	05/01/05		05/30/05		A-30/360		45660LDP1		100.00		0.000000		0.000000		0.000000		0.000000	0.000000
P	05/01/05		05/30/05		A-30/360		IN05A101P		0.00		0.000000		0.000000		0.000000		0.000000	0.000000




Page 2 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution

Distribution to Date - Trust
																	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	180,869,000.00		3,879,654.94		20,320,848.96		41,713.45		20,362,562.41		24,242,217.35		0.00		0.00		160,506,437.59
1-A-2	3,072,000.00		65,894.65		345,142.88		708.49		345,851.37		411,746.02		0.00		0.00		2,726,148.63
2-A-1	141,328,000.00		2,918,126.70		30,668,346.13		88,527.38		30,756,873.51		33,675,000.21		0.00		0.00		110,571,126.49
3-A-1	180,342,000.00		3,936,673.93		14,684,649.30		48,584.08		14,733,233.38		18,669,907.31		0.00		0.00		165,608,766.62
3-A-2	10,054,000.00		219,468.11		818,663.77		2,708.54		821,372.32		1,040,840.43		0.00		0.00		9,232,627.67
4-A-1	128,145,000.00		2,826,427.84		14,597,535.00		41,027.10		14,638,562.10		17,464,989.94		0.00		0.00		113,506,437.90
B-1	28,786,000.00		643,649.26		71,601.65		10,123.15		81,724.80		725,374.06		0.00		0.00		28,704,275.20
B-2	9,829,000.00		219,774.50		24,448.42		3,456.56		27,904.98		247,679.48		0.00		0.00		9,801,095.02
B-3	6,319,000.00		141,291.59		15,717.74		2,222.20		17,939.94		159,231.53		0.00		0.00		6,301,060.06
B-4	5,617,000.00		125,595.00		13,971.60		1,975.32		15,946.92		141,541.92		0.00		0.00		5,601,053.08
B-5	4,213,000.00		94,201.84		10,479.33		1,481.58		11,960.91		106,162.75		0.00		0.00		4,201,039.09
B-6	3,509,426.03		78,470.06		8,729.29		1,234.16		9,963.45		88,433.51		0.02		0.00		3,499,462.56
A-R	100.00		0.39		0.00		100.00		100.00		100.39		0.00		0.00		0.00
P	0.00		24,396.57		0.00		0.00		0.00		24,396.57		0.00		0.00		100.00


Total	702,083,526.03		15,173,625.38		81,580,134.07		243,862.01		81,823,996.09		96,997,621.47		0.02		0.00		620,259,629.91


Interest Detail - Trust
	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	5.36309%		165,628,870.65		740,235.82		0.00		0.00		0.00		740,235.82		740,235.82		0.00
1-A-2	5.36309%		2,813,151.46		12,572.66		0.00		0.00		0.00		12,572.66		12,572.66		0.00
2-A-1	5.31650%		118,302,745.90		524,130.36		0.00		0.00		0.00		524,130.36		524,130.36		0.00
3-A-1	5.38427%		169,449,041.61		760,299.26		0.00		0.00		0.00		760,299.26		760,299.26		0.00
3-A-2	5.38427%		9,446,721.58		42,386.40		0.00		0.00		0.00		42,386.40		42,386.40		0.00
4-A-1	5.43068%		121,149,820.66		548,272.07		0.00		0.00		0.00		548,272.07		548,272.07		0.00
B-1	5.37258%		28,708,062.60		128,530.29		0.00		0.00		0.00		128,530.29		128,530.29		0.00
B-2	5.37258%		9,802,388.23		43,886.76		0.00		0.00		0.00		43,886.76		43,886.76		0.00
B-3	5.37258%		6,301,891.46		28,214.51		0.00		0.00		0.00		28,214.51		28,214.51		0.00
B-4	5.37258%		5,601,792.11		25,080.06		0.00		0.00		0.00		25,080.06		25,080.06		0.00
B-5	5.37258%		4,201,593.40		18,811.16		0.00		0.00		0.00		18,811.16		18,811.16		0.00
B-6	5.37258%		3,499,924.29		15,669.68		0.00		0.00		0.00		15,669.68		15,669.68		0.00
A-R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
P	0.00000%		100.00		0.00		0.00		0.00		0.00		0.00		11,259.00		0.00


Total			644,906,103.95		2,888,089.03		0.00		0.00		0.00		2,888,089.03		2,899,348.03		0.00



Page 3 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						7,645,609.74		4,056,587.34		7,733,328.46		5,210,948.50		24,646,474.04
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						7,645,609.74		4,056,587.34		7,733,328.46		5,210,948.50		24,646,474.04
Interest Collections						609,504.23		898,067.74		593,193.80		842,252.69		2,943,018.46
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		0.00		0.00		0.00		11,259.00
Interest Fees						-8,918.72		-18,291.58		-12,597.71		-15,121.40		-54,929.43
TOTAL NET INTEREST						600,585.51		879,776.16		580,596.09		827,131.29		2,899,348.03
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						8,246,195.24		4,936,363.50		8,313,924.55		6,038,079.78		27,545,822.07



PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							25,566.90		25,317.38		17,572.91		16,833.73		85,290.92
Curtailments							17,161.88		126,381.93		53,256.91		7,839.82		204,640.54
Prepayments In Full							7,602,880.96		3,904,888.03		7,662,498.64		5,186,274.95		24,356,542.58
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							-23,753.64		-19,563.73		-15,002.81		-14,066.22		-72,386.40
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Advanced Principal							23,753.64		19,563.73		15,002.81		14,066.22		72,386.40
TOTAL PRINCIPAL COLLECTED							7,645,609.74		4,056,587.34		7,733,328.46		5,210,948.50		24,646,474.04


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



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





Page 4 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution

INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						643,542.46		943,338.40		622,726.22		887,090.60		3,096,697.68
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						-0.00		-0.00		-0.00		-0.00		-0.00
Delinquent Interest						-526,594.67		-698,213.14		-451,610.76		-690,535.65		-2,366,954.22
Compensating Interest						0.00		0.00		0.00		0.00		0.00
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						492,556.44		652,942.49		422,078.34		645,697.74		2,213,275.01
TOTAL INTEREST COLLECTED						609,504.23		898,067.74		593,193.80		842,252.69		2,943,018.46


INTEREST - WITHDRAWALS
INTEREST - WITHDRAWALS
						Group 4		Group 3		Group 2		Group 1		Total
TOTAL INTEREST WITHDRAWALS						0.00		0.00		0.00		0.00		0.00



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Charges														11,259.00
TOTAL INTEREST OTHER ACCOUNTS						0.00		0.00		0.00		0.00		11,259.00



INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						7,433.44		16,003.42		11,420.00		12,997.05		47,853.91
Trustee Fees						608.25		898.69		600.64		848.25		2,955.83
PMI Fees						877.04		1,389.47		577.07		1,276.11		4,119.69
TOTAL INTEREST FEES						8,918.72		18,291.58		12,597.71		15,121.40		54,929.43




Page 5 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Credit Enhancement Report
ACCOUNTS

SPACE INTENTIONALLY LEFT BLANK



INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES

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Page 6 of 24
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Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Collateral Report


COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



Loan Count:


Original						284		1,063		304		1,040		2,691
Prior						269		1,012		260		968		2,509
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-14		-21		-16		-26		-77
Repurchases						-0		-0		-0		-0		-0
Liquidations						-0		-0		-0		-0		-0
Current						255		991		244		942		2,432
Principal Balance:


Original						139,743,628.25		207,629,655.64		154,120,313.95		200,589,928.13		702,083,525.97
Prior						132,709,341.76		196,077,039.71		131,047,763.93		185,071,858.56		644,906,003.96
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-25,566.90		-25,317.38		-17,572.91		-16,833.73		-85,290.92
Partial Prepayments						-17,161.88		-126,381.93		-53,256.91		-7,839.82		-204,640.54
Full Voluntary Prepayments						-7,602,880.96		-3,904,888.03		-7,662,498.64		-5,186,274.95		-24,356,542.58
Repurchases						-0.00		-0.00		-0.00		-0.00		-0.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						125,063,732.02		192,020,452.37		123,314,435.47		179,860,910.06		620,259,529.92





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 7 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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2005-AR1

June 27, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						5.83151%		5.78256%		5.71039%		5.75850%		5.76959%
Weighted Average Coupon Prior						5.81458%		5.77727%		5.70543%		5.75708%		5.76402%
Weighted Average Coupon Current						5.81912%		5.77327%		5.70228%		5.75187%		5.76214%
Weighted Average Months to Maturity Original						358		357		358		357		357
Weighted Average Months to Maturity Prior						355		354		354		354		354
Weighted Average Months to Maturity Current						354		353		354		353		353
Weighted Avg Remaining Amortization Term Original						358		357		358		357		357
Weighted Avg Remaining Amortization Term Prior						355		354		354		354		354
Weighted Avg Remaining Amortization Term Current						354		353		354		353		353
Weighted Average Seasoning Original						2.32		3.21		2.22		2.80		2.70
Weighted Average Seasoning Prior						5.28		6.19		5.22		5.78		5.69
Weighted Average Seasoning Current						6.27		7.20		6.20		6.76		6.69









Page 8 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Margin Original						2.68031%		2.49554%		2.67493%		2.58553%		2.59741%
Weighted Average Margin Prior						2.68773%		2.49465%		2.67181%		2.58744%		2.59786%
Weighted Average Margin Current						2.68986%		2.49598%		2.67324%		2.58602%		2.59774%
Weighted Average Max Rate Original						11.66939%		11.41604%		11.65065%		11.43514%		11.52343%
Weighted Average Max Rate Prior						11.65947%		11.41786%		11.64565%		11.42659%		11.51783%
Weighted Average Max Rate Current						11.66417%		11.41871%		11.64701%		11.41801%		11.51541%
Weighted Average Min Rate Original						2.68031%		2.49554%		2.67493%		2.58553%		2.59741%
Weighted Average Min Rate Prior						2.68773%		2.49465%		2.67181%		2.58744%		2.59786%
Weighted Average Min Rate Current						2.68986%		2.49598%		2.67324%		2.58602%		2.59774%
Weighted Average Cap Up Original						1.59448%		1.54531%		1.65480%		1.45355%		1.55291%
Weighted Average Cap Up Prior						1.59722%		1.54817%		1.66841%		1.45437%		1.55696%
Weighted Average Cap Up Current						1.59629%		1.55016%		1.66897%		1.45085%		1.55530%
Weighted Average Cap Down Original						1.59448%		1.54531%		1.65480%		1.45355%		1.55291%
Weighted Average Cap Down Prior						1.59722%		1.54817%		1.66841%		1.45437%		1.55696%
Weighted Average Cap Down Current						1.59629%		1.55016%		1.66897%		1.45085%		1.55530%




SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						7,433.44		16,003.42		11,420.00		12,997.05		47,853.91
Delinquent Servicing Fees						34,038.23		45,270.65		29,532.42		44,837.91		153,679.21
TOTAL SERVICING FEES						41,471.67		61,274.08		40,952.43		57,834.96		201,533.14


Total Servicing Fees						41,471.67		61,274.08		40,952.43		57,834.96		201,533.14
Compensating Interest						-0.00		-0.00		-0.00		-0.00		-0.00
Delinquent Servicing Fees						-34,038.23		-45,270.65		-29,532.42		-44,837.91		-153,679.21
COLLECTED SERVICING FEES						7,433.44		16,003.43		11,420.00		12,997.05		47,853.92


Total Advanced Interest						492,556.44		652,942.49		422,078.34		645,697.74		2,213,275.01
Total Advanced Principal						23,753.64		19,563.73		15,002.81		14,066.22		72,386.40
Aggregate Advances with respect to this Distribution						516,310.08		672,506.22		437,081.15		659,763.96		2,285,661.41





ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Compensating Interest						-0.00		-0.00		-0.00		-0.00		-0.00
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00

Weighted Average Net Mortgage Rate						5.430685%		5.384268%		5.316499%		5.363093%





Page 9 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				11,502,079.01		1,649,900.00		2,285,448.54		15,437,427.55
			% Balance				1.85%		0.27%		0.37%		2.49%
			# Loans				45		5		9		59
			% # Loans				1.85%		0.21%		0.37%		2.43%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		227,500.00		540,000.00		0.00		0.00		767,500.00
			% Balance		0.04%		0.09%		0.00%		0.00%		0.12%
			# Loans		1		1		0		0		2
			% # Loans		0.04%		0.04%		0.00%		0.00%		0.08%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		227,500.00		12,042,079.01		1,649,900.00		2,285,448.54		16,204,927.55
			% Balance		0.04%		1.94%		0.27%		0.37%		2.61%
			# Loans		1		46		5		9		61
			% # Loans		0.04%		1.89%		0.21%		0.37%		2.51%









Page 10 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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 11 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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Mortgage Pass-Through Certificates
2005-AR1

June 27, 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 12 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




Current


Number of Paid in Full Loans						14		21		16		26		77
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						14		21		16		26		77
Curtailments Amount						17,161.88		126,381.93		53,256.91		7,839.82		204,640.54
Paid in Full Balance						7,602,880.96		3,904,888.03		7,662,498.64		5,186,274.95		24,356,542.58
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Total Prepayment Amount						7,620,042.84		4,031,269.96		7,715,755.55		5,194,114.77		24,561,183.12

Cumulative


Number of Paid in Full Loans						28		69		59		97		253
Number of Repurchased Loans						1		3		1		1		6
Total Number of Loans Prepaid in Full						29		72		60		98		259
Paid in Full Balance						14,125,889.14		14,387,436.82		29,523,307.77		20,342,117.71		78,378,751.44
Repurchased Loans Balance						363,560.00		519,950.00		485,000.00		159,000.00		1,527,510.00
Curtailments Amount						58,851.39		572,929.41		698,589.16		143,136.48		1,473,506.44
Total Prepayment Amount						14,548,300.53		15,480,316.23		30,706,896.93		20,644,254.19		81,379,767.88










Page 13 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

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2005-AR1

June 27, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

							Group 4		Group 3		Group 2		Group 1		Total



SMM						5.74%		2.06%		5.89%		2.81%		3.81%
3 Months Avg SMM						2.83%		1.88%		5.53%		2.29%		2.96%
12 Months Avg SMM						2.18%		1.54%		4.35%		2.15%		2.44%
Avg SMM Since Cut-off						2.18%		1.54%		4.35%		2.15%		2.44%


CPR						50.82%		22.07%		51.73%		28.94%		37.25%
3 Months Avg CPR						29.15%		20.38%		49.46%		24.31%		30.24%
12 Months Avg CPR						23.21%		16.98%		41.35%		22.95%		25.61%
Avg CPR Since Cut-off						23.21%		16.98%		41.35%		22.95%		25.61%


PSA						4,051.89%		1,533.11%		4,171.11%		2,140.28%		2,785.81%
3 Months Avg PSA Approximation						2,758.86%		1,644.13%		4,744.50%		2,105.94%		2,658.05%
12 Months Avg PSA Approximation						2,701.46%		1,630.99%		4,906.38%		2,399.82%		2,728.82%
Avg PSA Since Cut-off Approximation						2,701.46%		1,630.99%		4,906.38%		2,399.82%		2,728.82%










Page 14 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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 15 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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

3793730 1			230,400.00		230,400.00			15-Mar-2005		5.250%		FL - 80.00%		Paid Off - 360		01-Jul-2004
			230,400.00

3939974 3			103,790.00		103,790.00			01-Mar-2005		5.625%		AZ - 80.00%		Paid Off - 360		01-Jan-2005
3939974 3					103,790.00			01-Mar-2005		5.625%		AZ - 80.00%		Paid Off - 360		01-Jan-2005
120094246 3			306,698.00		306,698.00			27-Mar-2005		6.125%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120094246 3					306,698.00			27-Mar-2005		6.125%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120164009 1			122,550.00		122,550.00			07-Mar-2005		5.125%		FL - 95.00%		Paid Off - 360		01-Sep-2004
120164009 1					122,550.00			07-Mar-2005		5.125%		FL - 95.00%		Paid Off - 360		01-Sep-2004
120167078 4			400,000.00		400,000.00			09-Mar-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Sep-2004
120167078 4					400,000.00			09-Mar-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Sep-2004
120167649 4			360,000.00		359,909.98			09-Mar-2005		5.875%		MA - 69.90%		Paid Off - 360		01-Sep-2004
120167649 4					359,909.98			09-Mar-2005		5.875%		MA - 69.90%		Paid Off - 360		01-Sep-2004
120168189 1			94,000.00		93,999.97			19-Mar-2005		6.375%		IN - 80.00%		Paid Off - 360		01-Nov-2004
120168189 1					93,999.97			19-Mar-2005		6.375%		IN - 80.00%		Paid Off - 360		01-Nov-2004
120168194 1			66,400.00		66,400.00			31-Mar-2005		6.625%		MI - 94.99%		Paid Off - 360		01-Nov-2004
120168194 1					66,400.00			31-Mar-2005		6.625%		MI - 94.99%		Paid Off - 360		01-Nov-2004
120168204 1			182,000.00		182,000.00			15-Mar-2005		5.875%		FL - 79.13%		Paid Off - 360		01-Oct-2004
120168204 1					182,000.00			15-Mar-2005		5.875%		FL - 79.13%		Paid Off - 360		01-Oct-2004
120168238 1			134,000.00		134,000.00			24-Mar-2005		6.500%		MI - 80.00%		Paid Off - 360		01-Nov-2004
120168238 1					134,000.00			24-Mar-2005		6.500%		MI - 80.00%		Paid Off - 360		01-Nov-2004
120168549 1			256,000.00		256,000.00			06-Mar-2005		6.875%		NY - 89.83%		Paid Off - 360		01-Nov-2004
120168549 1					256,000.00			06-Mar-2005		6.875%		NY - 89.83%		Paid Off - 360		01-Nov-2004
120168564 1			308,500.00		308,500.00			17-Mar-2005		6.500%		VA - 71.74%		Paid Off - 360		01-Nov-2004
120168564 1					308,500.00			17-Mar-2005		6.500%		VA - 71.74%		Paid Off - 360		01-Nov-2004
120168565 2			399,500.00		399,500.00			18-Mar-2005		6.375%		MA - 78.03%		Paid Off - 360		01-Nov-2004
120168565 2					399,500.00			18-Mar-2005		6.375%		MA - 78.03%		Paid Off - 360		01-Nov-2004
120168581 2			560,000.00		560,000.00			16-Mar-2005		6.500%		MI - 74.17%		Paid Off - 360		01-Nov-2004
120168581 2					560,000.00			16-Mar-2005		6.500%		MI - 74.17%		Paid Off - 360		01-Nov-2004
120248226 4			540,000.00		536,412.76			31-Mar-2005		5.500%		CA - 79.41%		Paid Off - 360		01-Dec-2004
120248226 4					536,412.76			31-Mar-2005		5.500%		CA - 79.41%		Paid Off - 360		01-Dec-2004
120249970 3			128,000.00		127,169.28			09-Mar-2005		5.625%		IL - 80.00%		Paid Off - 360		01-Dec-2004
120249970 3					127,169.28			09-Mar-2005		5.625%		IL - 80.00%		Paid Off - 360		01-Dec-2004
120252834 4			408,000.00		408,000.00			13-Mar-2005		5.375%		CA - 80.00%		Paid Off - 360		01-Sep-2004
120252834 4					408,000.00			13-Mar-2005		5.375%		CA - 80.00%		Paid Off - 360		01-Sep-2004
120270288 1			176,000.00		173,831.69			31-Mar-2005		5.500%		NH - 80.00%		Paid Off - 360		01-Jul-2004
120270288 1					173,831.69			31-Mar-2005		5.500%				Paid Off - 360		01-Jul-2004
120305642 1			297,250.00		297,250.00			08-Mar-2005		5.750%		CA - 89.99%		Paid Off - 360		01-Jan-2005
120305642 1					297,250.00			08-Mar-2005		5.750%		CA - 89.99%		Paid Off - 360		01-Jan-2005
120346916 1			238,000.00		236,454.37			15-Mar-2005		5.875%		CA - 72.56%		Paid Off - 360		01-Dec-2004
120346916 1					236,454.37			15-Mar-2005		5.875%		CA - 72.56%		Paid Off - 360		01-Dec-2004
120357897 2			372,053.00		372,053.00			27-Mar-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120357897 2					372,053.00			27-Mar-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120371295 2			560,300.00		560,300.00			31-Mar-2005		6.750%		MI - 70.48%		Paid Off - 360		01-Nov-2004
120371295 2					560,300.00			31-Mar-2005		6.750%		MI - 70.48%		Paid Off - 360		01-Nov-2004
120371315 3			98,600.00		98,600.00			31-Mar-2005		6.250%		LA - 80.00%		Paid Off - 360		01-Nov-2004
120371315 3					98,600.00			31-Mar-2005		6.250%		LA - 80.00%		Paid Off - 360		01-Nov-2004
120371330 4			400,000.00		397,398.20			07-Mar-2005		7.000%		CA - 80.00%		Paid Off - 360		01-Nov-2004
120371330 4					397,398.20			07-Mar-2005		7.000%		CA - 80.00%		Paid Off - 360		01-Nov-2004
120371348 3			160,000.00		159,957.27			24-Mar-2005		6.375%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120371348 3					159,957.27			24-Mar-2005		6.375%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120371673 3			328,000.00		325,624.43			24-Mar-2005		5.875%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120371673 3					325,624.43			24-Mar-2005		5.875%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120371704 3			60,000.00		59,455.69			17-Mar-2005		5.775%		MN - 53.58%		Paid Off - 360		01-Nov-2004
120371704 3					59,455.69			17-Mar-2005		5.775%		MN - 53.58%		Paid Off - 360		01-Nov-2004
120372593 1			289,750.00		289,750.00			06-Mar-2005		6.375%		VT - 95.00%		Paid Off - 360		01-Dec-2004
120372593 1					289,750.00			06-Mar-2005		6.375%		VT - 95.00%		Paid Off - 360		01-Dec-2004
120372600 1			168,150.00		168,150.00			27-Mar-2005		6.250%		TX - 95.00%		Paid Off - 360		01-Nov-2004
120372600 1					168,150.00			27-Mar-2005		6.250%		TX - 95.00%		Paid Off - 360		01-Nov-2004
120372631 2			400,000.00		399,994.97			24-Mar-2005		6.500%		MD - 80.00%		Paid Off - 360		01-Dec-2004
120372631 2					399,994.97			24-Mar-2005		6.500%		MD - 80.00%		Paid Off - 360		01-Dec-2004
120372641 1			297,350.00		297,338.09			15-Mar-2005		6.375%		IL - 95.00%		Paid Off - 360		01-Nov-2004
120372641 1					297,338.09			15-Mar-2005		6.375%		IL - 95.00%		Paid Off - 360		01-Nov-2004
120372689 4			580,000.00		579,925.38			23-Mar-2005		6.375%		HI - 80.00%		Paid Off - 360		01-Nov-2004
120372689 4					579,925.38			23-Mar-2005		6.375%		HI - 80.00%		Paid Off - 360		01-Nov-2004
120372709 3			110,400.00		110,320.47			27-Mar-2005		5.875%		IL - 80.00%		Paid Off - 360		01-Nov-2004
120372709 3					110,320.47			27-Mar-2005		5.875%		IL - 80.00%		Paid Off - 360		01-Nov-2004
120373563 1			108,000.00		108,000.00			10-Mar-2005		6.000%		ID - 66.26%		Paid Off - 360		01-Dec-2004
120373563 1					108,000.00			10-Mar-2005		6.000%		ID - 66.26%		Paid Off - 360		01-Dec-2004
120373634 3			318,400.00		317,722.98			01-Mar-2005		6.625%		CA - 80.00%		Paid Off - 360		01-Dec-2004
120373634 3					317,722.98			01-Mar-2005		6.625%		CA - 80.00%		Paid Off - 360		01-Dec-2004
120374215 1			245,600.00		245,600.00			03-Mar-2005		4.875%		FL - 80.00%		Paid Off - 360		01-Nov-2004
120374215 1					245,600.00			03-Mar-2005		4.875%		FL - 80.00%		Paid Off - 360		01-Nov-2004
120375367 1			320,000.00		320,000.00			08-Mar-2005		6.375%		MI - 50.00%		Paid Off - 360		01-Dec-2004
120375367 1					320,000.00					6.375%		MI - 50.00%		Paid Off - 360



Page 16 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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

120375397 1			232,000.00		232,000.00			03-Mar-2005		5.875%		NY - 80.00%		Paid Off - 360		01-Dec-2004
			232,000.00

120375428 1			115,000.00		115,000.00			06-Mar-2005		6.375%		NV - 78.77%		Paid Off - 360		01-Dec-2004
120375428 1					115,000.00			06-Mar-2005		6.375%		NV - 78.77%		Paid Off - 360		01-Dec-2004
120375616 3			202,350.00		202,350.00			27-Mar-2005		6.500%		FL - 95.00%		Paid Off - 360		01-Dec-2004
120375616 3					202,350.00			27-Mar-2005		6.500%		FL - 95.00%		Paid Off - 360		01-Dec-2004
120375620 3			192,000.00		192,000.00			27-Mar-2005		6.625%		GA - 80.00%		Paid Off - 360		01-Oct-2004
120375620 3					192,000.00			27-Mar-2005		6.625%		GA - 80.00%		Paid Off - 360		01-Oct-2004
120375625 3			309,600.00		309,600.00			18-Mar-2005		6.375%		FL - 90.00%		Paid Off - 360		01-Jan-2005
120375625 3					309,600.00			18-Mar-2005		6.375%		FL - 90.00%		Paid Off - 360		01-Jan-2005
120375638 3			130,500.00		130,500.00			25-Mar-2005		7.000%		FL - 91.39%		Paid Off - 360		01-Dec-2004
120375638 3					130,500.00			25-Mar-2005		7.000%		FL - 91.39%		Paid Off - 360		01-Dec-2004
120375643 3			227,500.00		227,500.00			08-Mar-2005		6.250%		MA - 78.45%		Paid Off - 360		01-Dec-2004
120375643 3					227,500.00			08-Mar-2005		6.250%		MA - 78.45%		Paid Off - 360		01-Dec-2004
120375645 3			157,500.00		157,499.91			27-Mar-2005		6.500%		CA - 75.00%		Paid Off - 360		01-Dec-2004
120375645 3					157,499.91			27-Mar-2005		6.500%		CA - 75.00%		Paid Off - 360		01-Dec-2004
120376521 3			87,300.00		87,300.00			23-Mar-2005		6.500%		FL - 90.00%		Paid Off - 360		01-Nov-2004
120376521 3					87,300.00			23-Mar-2005		6.500%		FL - 90.00%		Paid Off - 360		01-Nov-2004
120376577 3			132,000.00		132,000.00			08-Mar-2005		5.000%		FL - 80.00%		Paid Off - 360		01-Dec-2004
120376577 3					132,000.00			08-Mar-2005		5.000%		FL - 80.00%		Paid Off - 360		01-Dec-2004
120376779 1			100,950.00		100,950.00			18-Mar-2005		4.875%		GA - 79.98%		Paid Off - 360		01-Dec-2004
120376779 1					100,950.00			18-Mar-2005		4.875%		GA - 79.98%		Paid Off - 360		01-Dec-2004
120376780 1			110,550.00		110,497.89			01-Mar-2005		7.250%		GA - 94.97%		Paid Off - 360		01-Dec-2004
120376780 1					110,497.89			01-Mar-2005		7.250%		GA - 94.97%		Paid Off - 360		01-Dec-2004
120433077 2			650,000.00		650,000.00			14-Mar-2005		5.000%		CA - 65.00%		Paid Off - 360		01-Sep-2004
120433077 2					650,000.00			14-Mar-2005		5.000%		CA - 65.00%		Paid Off - 360		01-Sep-2004
120465538 1			80,000.00		76,903.13			08-Mar-2005		6.000%		MA - 21.05%		Paid Off - 360		01-Aug-2004
120465538 1					76,903.13			08-Mar-2005		6.000%		MA - 21.05%		Paid Off - 360		01-Aug-2004
120486966 4			642,560.00		642,555.00			09-Mar-2005		6.250%		MD - 80.00%		Paid Off - 360		01-Jan-2005
120486966 4					642,555.00			09-Mar-2005		6.250%		MD - 80.00%		Paid Off - 360		01-Jan-2005
120526844 2			447,000.00		447,000.00			25-Mar-2005		5.875%		CA - 52.59%		Paid Off - 360		01-Jan-2005
120526844 2					447,000.00			25-Mar-2005		5.875%		CA - 52.59%		Paid Off - 360		01-Jan-2005
120536878 2			432,000.00		128,103.69			24-Mar-2005		4.875%		FL - 80.00%		Paid Off - 360		01-Jan-2005
120536878 2					128,103.69			24-Mar-2005		4.875%		FL - 80.00%		Paid Off - 360		01-Jan-2005
120549764 3			238,400.00		238,400.00			31-Mar-2005		6.500%		CT - 80.00%		Paid Off - 360		01-Feb-2005
120549764 3					238,400.00			31-Mar-2005		6.500%		CT - 80.00%		Paid Off - 360		01-Feb-2005
120566181 2			600,000.00		593,130.77			18-Mar-2005		5.000%		CA - 37.50%		Paid Off - 360		01-Jan-2005
120566181 2					593,130.77			18-Mar-2005		5.000%		CA - 37.50%		Paid Off - 360		01-Jan-2005
120570847 3			154,400.00		154,400.00			20-Mar-2005		6.125%		CT - 77.59%		Paid Off - 360		01-Feb-2005
120570847 3					154,400.00			20-Mar-2005		6.125%		CT - 77.59%		Paid Off - 360		01-Feb-2005
120571601 4			600,000.00		600,000.00			02-Mar-2005		6.000%		NY - 61.54%		Paid Off - 360		01-Feb-2005
120571601 4					600,000.00			02-Mar-2005		6.000%		NY - 61.54%		Paid Off - 360		01-Feb-2005
120578143 2			460,000.00		460,000.00			07-Mar-2005		6.125%		CA - 64.34%		Paid Off - 360		01-Jan-2005
120578143 2					460,000.00			07-Mar-2005		6.125%		CA - 64.34%		Paid Off - 360		01-Jan-2005
120579869 3			200,000.00		200,000.00			15-Mar-2005		5.250%		CA - 50.63%		Paid Off - 360		01-Nov-2004
120579869 3					200,000.00			15-Mar-2005		5.250%		CA - 50.63%		Paid Off - 360		01-Nov-2004
120598787 4			540,850.00		540,850.00			26-Mar-2005		5.375%		VA - 74.99%		Paid Off - 360		01-Jan-2005
120598787 4					540,850.00			26-Mar-2005		5.375%		VA - 74.99%		Paid Off - 360		01-Jan-2005
120610668 1			303,900.00		303,900.00			27-Mar-2005		5.250%		NJ - 95.00%		Paid Off - 360		01-Jan-2005
120610668 1					303,900.00			27-Mar-2005		5.250%		NJ - 95.00%		Paid Off - 360		01-Jan-2005
120622709 2			560,000.00		560,000.00			03-Mar-2005		6.250%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120622709 2					560,000.00			03-Mar-2005		6.250%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120622997 2			450,000.00		448,016.21			03-Mar-2005		5.500%		VA - 75.00%		Paid Off - 360		01-Feb-2005
120622997 2					448,016.21			03-Mar-2005		5.500%		VA - 75.00%		Paid Off - 360		01-Feb-2005
120623576 4			392,000.00		392,000.00			02-Mar-2005		5.750%		MA - 80.00%		Paid Off - 360		01-Feb-2005
120623576 4					392,000.00			02-Mar-2005		5.750%		MA - 80.00%		Paid Off - 360		01-Feb-2005
120635270 4			676,000.00		676,000.00			15-Mar-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120635270 4					676,000.00			15-Mar-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Feb-2005
120637632 2			412,500.00		412,500.00			06-Mar-2005		6.125%		SC - 75.00%		Paid Off - 360		01-Feb-2005
120637632 2					412,500.00			06-Mar-2005		6.125%		SC - 75.00%		Paid Off - 360		01-Feb-2005
120649806 1			260,800.00		260,799.99			19-Mar-2005		5.125%		SC - 80.00%		Paid Off - 360		01-Feb-2005
120649806 1					260,799.99			19-Mar-2005		5.125%		SC - 80.00%		Paid Off - 360		01-Feb-2005
120652458 3			264,000.00		264,000.00			08-Mar-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120652458 3					264,000.00			08-Mar-2005		6.000%		CA - 80.00%		Paid Off - 360		01-Jan-2005
120653158 1			236,000.00		235,999.82			19-Mar-2005		8.125%		CA - 65.56%		Paid Off - 360		01-Dec-2004
120653158 1					235,999.82			19-Mar-2005		8.125%		CA - 65.56%		Paid Off - 360		01-Dec-2004
120654364 2			750,000.00		750,000.00			24-Mar-2005		5.750%		WA - 75.00%		Paid Off - 360		01-Feb-2005
120654364 2					750,000.00			24-Mar-2005		5.750%		WA - 75.00%		Paid Off - 360		01-Feb-2005
120662106 2			500,000.00		500,000.00			06-Mar-2005		5.750%		CA - 72.89%		Paid Off - 360		01-Feb-2005
120662106 2					500,000.00			06-Mar-2005		5.750%		CA - 72.89%		Paid Off - 360		01-Feb-2005
120680064 1			220,000.00		220,000.00			16-Mar-2005		6.125%		AZ - 80.00%		Paid Off - 360		01-Feb-2005
120680064 1					220,000.00			16-Mar-2005		6.125%		AZ - 80.00%		Paid Off - 360		01-Feb-2005
120688111 2			421,900.00		421,900.00			16-Mar-2005		5.125%		IN - 78.86%		Paid Off - 360		01-Jan-2005
120688111 2					421,900.00			16-Mar-2005		5.125%		IN - 78.86%		Paid Off - 360		01-Jan-2005
120722997 4			472,500.00		472,500.00			14-Mar-2005		6.250%		VA - 90.00%		Paid Off - 360		01-Feb-2005
120722997 4					472,500.00					6.250%		VA - 90.00%		Paid Off - 360



Page 17 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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

120736083 4			650,000.00		647,329.64			03-Mar-2005		5.875%		CA - 67.71%		Paid Off - 360		01-Feb-2005
			650,000.00

120750965 4			950,000.00		950,000.00			24-Mar-2005		6.000%		MI - 59.38%		Paid Off - 360		01-Feb-2005
120750965 4					950,000.00			24-Mar-2005		6.000%		MI - 59.38%		Paid Off - 360		01-Feb-2005


TOTAL			24,689,751.00		24,356,542.58
TOTAL


Page 18 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Realized Loss Report

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														7,020,835.00
		Fraud Loss Coverage Amt														14,041,671.00
		Bankrupt Loss Coverage Amt														316,641.00
		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 19 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution


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 20 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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 21 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 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 22 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
						Group 4		Group 3		Group 2		Group 1		Total
						Has Optional Termination Date Reached (0=No,1=Yes)								0
						Has Sr. Prepay Stepdown Condition Occurred								0
						Has Sr. Credit Supp. Depletion Date Occured								0
						Has Special Haz. Cov. Term Date Occured								0
						Has Fraud Loss Coverage Term Date Occured								0
						Has BK Loss Cov. Term Date Occured (0=No,1=Yes)								0



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK



ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Senior Percentage														90.988508%
Next Senior Percentage														90.631666%
Current Subordinate Percentage														9.011492%
Next Subordinate Percentage														9.368334%
Senior Prepayment Percentage														100.000000%
Next Senior Prepayment Percentage														100.000000%
Subordinate Prepayment Percentage														0.000000%
Next Subordinate Prepayment Percentage														0.000000%




Page 23 of 24
IndyMac INDX Mortgage Loan Trust 2005-AR1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2005-AR1

June 27, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Scheduled Payments														3,181,988.60
Current Scheduled Payments 1 Month Prior														3,267,934.02
Current Scheduled Payments 2 Month Prior														3,348,670.91
Current Scheduled Payments 3 Month Prior														3,419,843.70
Current Scheduled Payments 4 Month Prior														3,461,787.79
Current Scheduled Payments 5 Month Prior														0.00
Current Scheduled Payments 6 Month Prior														0.00
Current Scheduled Payments 7 Month Prior														0.00
Current Scheduled Payments 8 Month Prior														0.00
Current Scheduled Payments 9 Month Prior														0.00
Current Scheduled Payments 10 Month Prior														0.00
Current Scheduled Payments 11 Month Prior														0.00


Delinquent 60+ Scheduled Payments														0.00
Delinq. 60+ Sched. Pmnts, 1 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 2 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 3 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 4 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 5 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 6 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 7 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 8 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 9 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 10 Month Prior														0.00
Delinq. 60+ Sched. Pmnts, 11 Month Prior														0.00






Page 24 of 24

IndyMac INDX Mortgage Loan Trust 2005-AR1 8-K