
                                       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):  December 27, 2004
                          (Date of earliest event reported)

            Indymac MBS Inc (as Depositor under the Pooling and Servicing
                Agreement, dated as August 1, 2004, providing for the
               issuance of IndyMAc INDX Mortgage Loan Trust 2004-AR6
                Mortgage Pass-Through Certificates, Series 2004-AR6)
                 (Exact name of registrant as specified in charter)


                                         DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-116470-10                         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
     December 27, 2004.

                                    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:  Dec 30, 2004               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of December 27, 2004.



IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

				External Parties						Table of Contents

													Page
				Seller									Page
				Seller						1. Certificate Payment Report					2
				IndyMac Bank						1. Certificate Payment Report					2
				IndyMac Bank						2. Collection Account Report					4
										2. Collection Account Report					4
										3. Credit Enhancement Report					9
										4. Collateral Report					10
				Certificate Insurer(s)						5. Delinquency Report					17
				Certificate Insurer(s)						5. Delinquency Report					17
										6. REO Report					24

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


				Underwriter(s)
				Greenwich Capital Markets


										Total Number of Pages					42
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			August 01, 2004			Brent Hoyler
				Close Date:			August 31, 2004			Administrator
				First Distribution Date:			September 27, 2004			(714) 247-6322
										Brent.Hoyler@db.com
										Brent.Hoyler@db.com
										Address:
										1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:			December 27, 2004
										Factor Information:			(800) 735-7777
				Record Date:			November 30, 2004			Factor Information:			(800) 735-7777
										Main Phone Number:			(714) 247-6000
										Main Phone Number:			(714) 247-6000

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






Page 1 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Certificate Payment Report
Current Period Distribution - REMIC 2
					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	FLT	$	64,935,800.00		63,875,176.36		291,630.07		308,261.98		599,892.05		0.00		0.00		63,566,914.38
1-A	FLT	$	64,935,800.00		63,875,176.36		291,630.07		308,261.98		599,892.05		0.00		0.00		63,566,914.38
2-A	FLT	$	171,745,500.00		162,810,340.20		745,745.44		3,704,480.87		4,450,226.31		0.00		0.00		159,105,859.33
3-A-1	FLT	$	79,923,800.00		71,644,170.67		326,727.21		1,666,872.36		1,993,599.57		0.00		0.00		69,977,298.31
3-A-2	FLT	$	96,105,900.00		86,149,901.55		392,879.38		2,004,362.52		2,397,241.90		0.00		0.00		84,145,539.03
3-A-3	FLT	$	1,961,400.00		1,758,210.67		8,018.17		40,906.51		48,924.68		0.00		0.00		1,717,304.16
4-A	FLT	$	172,020,700.00		166,527,633.44		785,950.70		2,884,468.22		3,670,418.92		0.00		0.00		163,643,165.22
5-A-1	FLT	$	213,658,000.00		202,779,440.62		958,228.18		6,934,128.86		7,892,357.04		0.00		0.00		195,845,311.76
5-A-2	FLT	$	16,081,800.00		15,262,982.93		72,124.77		521,924.17		594,048.94		0.00		0.00		14,741,058.76
6-A-1	FLT	$	52,967,800.00		51,767,696.52		240,467.20		2,030,075.76		2,270,542.96		0.00		0.00		49,737,620.76
6-A-2	FLT	$	3,986,900.00		3,896,567.91		18,100.03		152,804.33		170,904.36		0.00		0.00		3,743,763.58
A-R	R	$	100.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	MEZ, FLT	$	22,784,000.00		22,751,510.21		105,681.74		4,268.13		109,949.87		0.00		0.00		22,747,242.08
B-2	MEZ, FLT	$	18,037,300.00		18,011,578.97		83,664.56		3,378.93		87,043.49		0.00		0.00		18,008,200.04
B-3	MEZ, FLT	$	13,290,700.00		13,271,747.58		61,647.84		2,489.75		64,137.59		0.00		0.00		13,269,257.83
B-4	MEZ, FLT	$	13,290,700.00		13,271,747.58		61,647.84		2,489.75		64,137.59		0.00		0.00		13,269,257.83
B-5	MEZ, FLT	$	4,746,700.00		4,739,931.25		22,017.18		889.20		22,906.38		0.00		0.00		4,739,042.05
B-6	MEZ, FLT	$	3,797,738.00		3,792,322.45		17,615.50		711.43		18,326.93		0.00		0.00		3,791,611.02
P	SUB	$	100.00		100.00		3,341.04		0.00		3,341.04		0.00		0.00		100.00

Total			949,334,938.00		902,311,058.91		4,195,486.85		20,262,512.77		24,457,999.62		0.00		0.00		882,048,546.14
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	11/01/04		11/30/04		A-30/360		45660NX26		64,935,800.00		983.666581		4.491052		4.747181		9.238233	978.919400
2-A	11/01/04		11/30/04		A-30/360		45660NX34		171,745,500.00		947.974417		4.342154		21.569595		25.911749	926.404822
3-A-1	11/01/04		11/30/04		A-30/360		45660NX42		79,923,800.00		896.405960		4.087984		20.855770		24.943754	875.550190
3-A-2	11/01/04		11/30/04		A-30/360		45660NX59		96,105,900.00		896.405960		4.087984		20.855770		24.943754	875.550190
3-A-3	11/01/04		11/30/04		A-30/360		45660NX67		1,961,400.00		896.405970		4.087983		20.855771		24.943754	875.550199
4-A	11/01/04		11/30/04		A-30/360		45660NX75		172,020,700.00		968.067410		4.568931		16.768146		21.337077	951.299264
5-A-1	11/01/04		11/30/04		A-30/360		45660NX83		213,658,000.00		949.084240		4.484869		32.454338		36.939207	916.629903
5-A-2	11/01/04		11/30/04		A-30/360		45660NX91		16,081,800.00		949.084240		4.484869		32.454338		36.939207	916.629902
6-A-1	11/01/04		11/30/04		A-30/360		45660NY25		52,967,800.00		977.342773		4.539875		38.326601		42.866477	939.016171
6-A-2	11/01/04		11/30/04		A-30/360		45660NY33		3,986,900.00		977.342775		4.539876		38.326602		42.866478	939.016173
A-R	11/01/04		11/30/04		A-30/360		45660NY41		100.00		0.000000		0.000000		0.000000		0.000000	0.000000
B-1	11/01/04		11/30/04		A-30/360		45660NY58		22,784,000.00		998.574009		4.638419		0.187330		4.825749	998.386678
B-2	11/01/04		11/30/04		A-30/360		45660NY66		18,037,300.00		998.574009		4.638419		0.187330		4.825749	998.386679
B-3	11/01/04		11/30/04		A-30/360		45660NY74		13,290,700.00		998.574009		4.638419		0.187330		4.825750	998.386679
B-4	11/01/04		11/30/04		A-30/360		45660NZ57		13,290,700.00		998.574009		4.638419		0.187330		4.825750	998.386679
B-5	11/01/04		11/30/04		A-30/360		45660NZ73		4,746,700.00		998.574009		4.638418		0.187330		4.825748	998.386679
B-6	11/01/04		11/30/04		A-30/360		45660NZ99		3,797,738.00		998.574006		4.638419		0.187330		4.825749	998.386676
P	11/01/04		11/30/04		A-30/360		IN04A61P1		100.00		1,000.000000		33,410.400000		0.000000		33,410.400000	1,000.000000



Page 2 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

Distribution to Date - REMIC 2
																	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	64,935,800.00		889,686.51		1,189,976.65		178,908.97		1,368,885.62		2,258,572.13		0.00		0.00		63,566,914.38
2-A	171,745,500.00		2,319,430.35		12,426,690.03		212,950.64		12,639,640.67		14,959,071.02		0.00		0.00		159,105,859.33
3-A-1	79,923,800.00		1,040,999.37		9,684,454.23		262,047.46		9,946,501.69		10,987,501.06		0.00		0.00		69,977,298.31
3-A-2	96,105,900.00		1,251,769.60		11,645,257.00		315,103.97		11,960,360.97		13,212,130.57		0.00		0.00		84,145,539.03
3-A-3	1,961,400.00		25,547.04		237,664.97		6,430.87		244,095.84		269,642.88		0.00		0.00		1,717,304.16
4-A	172,020,700.00		2,416,462.05		8,161,264.60		216,270.18		8,377,534.78		10,793,996.83		0.00		0.00		163,643,165.22
5-A-1	213,658,000.00		2,971,589.39		17,180,330.76		632,357.48		17,812,688.24		20,784,277.63		0.00		0.00		195,845,311.76
5-A-2	16,081,800.00		223,668.23		1,293,144.38		47,596.84		1,340,741.24		1,564,409.47		0.00		0.00		14,741,058.76
6-A-1	52,967,800.00		737,341.24		3,120,648.38		109,530.86		3,230,179.24		3,967,520.48		0.00		0.00		49,737,620.76
6-A-2	3,986,900.00		55,499.87		234,892.01		8,244.41		243,136.42		298,636.29		0.00		0.00		3,743,763.58
A-R	100.00		0.02		0.00		0.00		100.00		100.02		0.00		0.00		0.00
B-1	22,784,000.00		320,925.55		0.00		36,757.92		36,757.92		357,683.47		0.00		0.00		22,747,242.08
B-2	18,037,300.00		254,065.59		0.00		29,099.96		29,099.96		283,165.55		0.00		0.00		18,008,200.04
B-3	13,290,700.00		187,207.04		0.00		21,442.17		21,442.17		208,649.21		0.00		0.00		13,269,257.83
B-4	13,290,700.00		187,207.04		0.00		21,442.17		21,442.17		208,649.21		0.00		0.00		13,269,257.83
B-5	4,746,700.00		66,859.96		0.00		7,657.95		7,657.95		74,517.91		0.00		0.00		4,739,042.05
B-6	3,797,738.00		53,493.29		0.00		6,126.98		6,126.98		59,620.27		0.00		0.00		3,791,611.02
P	100.00		25,737.28		0.00		0.00		0.00		25,737.28		0.00		0.00		100.00

Total	949,334,938.00		13,027,489.42		65,174,323.01		2,111,968.83		67,286,391.86		80,313,881.28		0.00		0.00		882,048,546.14


Interest Detail - REMIC 2
	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	5.47875%		63,875,176.36		291,630.07		0.00		0.00		0.00		291,630.07		291,630.07		0.00
2-A	5.49655%		162,810,340.20		745,745.44		0.00		0.00		0.00		745,745.44		745,745.44		0.00
3-A-1	5.47250%		71,644,170.67		326,727.21		0.00		0.00		0.00		326,727.21		326,727.21		0.00
3-A-2	5.47250%		86,149,901.55		392,879.38		0.00		0.00		0.00		392,879.38		392,879.38		0.00
3-A-3	5.47250%		1,758,210.67		8,018.17		0.00		0.00		0.00		8,018.17		8,018.17		0.00
4-A	5.66357%		166,527,633.44		785,950.70		0.00		0.00		0.00		785,950.70		785,950.70		0.00
5-A-1	5.67056%		202,779,440.62		958,228.18		0.00		0.00		0.00		958,228.18		958,228.18		0.00
5-A-2	5.67056%		15,262,982.93		72,124.77		0.00		0.00		0.00		72,124.77		72,124.77		0.00
6-A-1	5.57414%		51,767,696.52		240,467.20		0.00		0.00		0.00		240,467.20		240,467.20		0.00
6-A-2	5.57414%		3,896,567.91		18,100.03		0.00		0.00		0.00		18,100.03		18,100.03		0.00
A-R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00
B-1	5.57405%		22,751,510.21		105,681.74		0.00		0.00		0.00		105,681.74		105,681.74		0.00
B-2	5.57405%		18,011,578.97		83,664.56		0.00		0.00		0.00		83,664.56		83,664.56		0.00
B-3	5.57405%		13,271,747.58		61,647.84		0.00		0.00		0.00		61,647.84		61,647.84		0.00
B-4	5.57405%		13,271,747.58		61,647.84		0.00		0.00		0.00		61,647.84		61,647.84		0.00
B-5	5.57405%		4,739,931.25		22,017.18		0.00		0.00		0.00		22,017.18		22,017.18		0.00
B-6	5.57405%		3,792,322.45		17,615.50		0.00		0.00		0.00		17,615.50		17,615.50		0.00
P	40,092.48000%		100.00		0.00		0.00		0.00		0.00		0.00		3,341.04		0.00

Total			902,311,058.91		4,192,145.81		0.00		0.00		0.00		4,192,145.81		4,195,486.85		0.00



Page 3 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Collection Account Report
SUMMARY
SUMMARY
												Group 6		Group 5
Principal Collections												2,184,472.30		7,460,220.36
Principal Withrawals												0.00		0.00
Principal Other Accounts												0.00		0.00
TOTAL NET PRINCIPAL												2,184,472.30		7,460,220.36
Interest Collections												286,100.59		1,145,132.54
Interest Withdrawals												-0.00		-0.00
Interest Other Accounts												0.00		0.00
Interest Fees												-4,552.24		-20,593.58
TOTAL NET INTEREST												281,548.35		1,124,538.96
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION												2,466,020.65		8,584,759.32

SUMMARY
SUMMARY
						Group 4		Group 3		Group 2		Group 1		Total
Principal Collections						2,886,814.03		3,714,444.39		3,706,608.22		309,953.46		20,262,512.76
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						2,886,814.03		3,714,444.39		3,706,608.22		309,953.46		20,262,512.76
Interest Collections						873,823.35		810,496.80		830,187.39		326,772.32		4,272,512.99
Interest Withdrawals						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Other Accounts						0.00		0.00		0.00		3,341.04		3,341.04
Interest Fees						-17,307.49		-12,464.91		-16,064.50		-6,043.41		-77,026.13
TOTAL NET INTEREST						856,515.86		798,031.89		814,122.89		320,728.92		4,195,486.86
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION						3,743,329.89		4,512,476.28		4,520,731.11		630,682.38		24,457,999.62





Page 4 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
													Group 6		Group 5
Scheduled Principal Received													19,506.61		49,756.12
Curtailments													6,944.79		26,223.91
Prepayments In Full													2,158,020.90		7,384,240.33
Repurchased/Substitutions													0.00		0.00
Liquidations													0.00		0.00
Insurance Principal													0.00		0.00
Other Additional Principal													0.00		0.00
Delinquent Principal													-15,710.00		-38,966.13
Realized Losses													-0.00		-0.00
Principal Recoveries
Advanced Principal													15,710.00		38,966.13
TOTAL PRINCIPAL COLLECTED													2,184,472.30		7,460,220.36
PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
							Group 4		Group 3		Group 2		Group 1		Total
Scheduled Principal Received							28,473.34		26,103.47		25,328.86		20,842.37		170,010.77
Curtailments							17,093.75		10,553.71		172,436.54		10,711.09		243,963.79
Prepayments In Full							2,841,246.94		3,677,787.21		3,508,842.82		278,400.00		19,848,538.20
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							-19,329.47		-20,140.89		-18,290.88		-18,547.91		-130,985.28
Realized Losses							-0.00		-0.00		-0.00		-0.00		-0.00
Principal Recoveries
Advanced Principal							19,329.47		20,140.89		18,290.88		18,547.91		130,985.28
TOTAL PRINCIPAL COLLECTED							2,886,814.03		3,714,444.39		3,706,608.22		309,953.46		20,262,512.76


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK





Page 5 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
												Group 6		Group 5
TOTAL PRINCIPAL OTHER ACCOUNTS												0.00		0.00

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



INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
												Group 6		Group 5
Scheduled Interest												300,978.30		1,202,068.94
Repurchased/Substitution Interest												0.00		0.00
Liquidation Interest												0.00		0.00
Insurance Interest												0.00		0.00
Other Additional Interest												0.00		0.00
Prepayment Interest Shortfalls												-974.31		-4,985.91
Delinquent Interest												-236,003.17		-921,042.16
Interest Realized Losses
Compensating Interest												974.31		4,985.91
Civil Relief Act Shortfalls												-0.00		-0.00
Interest Advanced												221,125.46		864,105.76
TOTAL INTEREST COLLECTED												286,100.59		1,145,132.54
INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
						Group 4		Group 3		Group 2		Group 1		Total
Scheduled Interest						915,457.59		853,610.53		870,833.96		340,720.91		4,483,670.24
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		3,341.04		3,341.04
Prepayment Interest Shortfalls						-2,656.61		-3,427.16		-1,323.83		-615.77		-13,983.58
Delinquent Interest						-672,617.84		-671,028.06		-640,741.24		-270,507.31		-3,411,939.78
Interest Realized Losses
Compensating Interest						2,656.61		3,427.16		1,323.83		615.77		13,983.58
Civil Relief Act Shortfalls						-0.00		-0.00		-0.00		-0.00		-0.00
Interest Advanced						630,983.59		627,914.32		600,094.67		253,217.68		3,197,441.49
TOTAL INTEREST COLLECTED						873,823.35		810,496.80		830,187.39		326,772.32		4,272,512.99




Page 6 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
												Group 6		Group 5
Prepayment Charges												0.00		0.00
TOTAL INTEREST OTHER ACCOUNTS												0.00		0.00

INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Charges						0.00		0.00		0.00		3,341.04		3,341.04
TOTAL INTEREST OTHER ACCOUNTS						0.00		0.00		0.00		3,341.04		3,341.04





Page 7 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

INTEREST - FEES
INTEREST - FEES
												Group 6		Group 5
Current Servicing Fees												4,063.42		17,430.47
Trustee Fees												252.55		991.56
TOTAL INTEREST FEES												4,552.24		20,593.58

INTEREST - FEES
INTEREST - FEES
						Group 4		Group 3		Group 2		Group 1		Total
Current Servicing Fees						15,077.95		11,570.97		14,896.69		4,434.39		67,473.88
Trustee Fees						756.16		729.13		740.58		289.65		3,759.63
TOTAL INTEREST FEES						17,307.49		12,464.91		16,064.50		6,043.41		77,026.13




Page 8 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE
INSURANCE
												Group 6		Group 5
PMI PREMIUM

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



STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK



Page 9 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Collateral Report


COLLATERAL



													Group 6		Group 5



*Loan Count:*


Original												177		664
Prior												175		634
Prefunding												0		0
Scheduled Paid Offs												-0		-0
Full Voluntary Prepayments												-4		-15
Repurchases												-0		-0
Liquidations												-0		-0
Current												171		619
*Principal Balance:*


Original												61,907,300.43		249,717,202.79
Prior												60,611,631.02		237,973,987.31
Prefunding												0.00		0.00
Scheduled Principal												-19,506.61		-49,756.12
Partial Prepayments												-6,944.79		-26,223.91
Full Voluntary Prepayments												-2,158,020.90		-7,384,240.33
Repurchases												-0.00		-0.00
Liquidations												-0.00		-0.00
Current												58,427,158.72		230,513,766.95

COLLATERAL



							Group 4		Group 3		Group 2		Group 1		Total



*Loan Count:*
*Loan Count:*


Original						876		386		880		282		3,265
Prior						855		356		841		277		3,138
Prefunding						0		0		0		0		0
Scheduled Paid Offs						-0		-0		-0		-0		-0
Full Voluntary Prepayments						-12		-8		-16		-1		-56
Repurchases						-0		-0		-0		-0		-0
Liquidations						-0		-0		-0		-0		-0
Current						843		348		825		276		3,082
*Principal Balance:*


Original						186,979,083.60		193,468,673.46		186,679,987.43		70,582,591.16		949,334,838.87
Prior						181,479,015.49		174,991,034.45		177,738,430.57		69,516,860.92		902,310,959.76
Prefunding						0.00		0.00		0.00		0.00		0.00
Scheduled Principal						-28,473.34		-26,103.47		-25,328.86		-20,842.37		-170,010.77
Partial Prepayments						-17,093.75		-10,553.71		-172,436.54		-10,711.09		-243,963.79
Full Voluntary Prepayments						-2,841,246.94		-3,677,787.21		-3,508,842.82		-278,400.00		-19,848,538.20
Repurchases						-0.00		-0.00		-0.00		-0.00		-0.00
Liquidations						-0.00		-0.00		-0.00		-0.00		-0.00
Current						178,592,201.46		171,276,590.06		174,031,822.35		69,206,907.46		882,048,447.00







Page 10 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK







Page 11 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

CHARACTERISTICS
CHARACTERISTICS
												Group 6		Group 5
Weighted Average Coupon Original												5.95892%		6.06356%
Weighted Average Coupon Prior												5.95705%		6.06398%
Weighted Average Coupon Current												5.95882%		6.06151%
Weighted Average Months to Maturity Original												357		358
Weighted Average Months to Maturity Prior												355		356
Weighted Average Months to Maturity Current												354		355
Weighted Avg Remaining Amortization Term Original												357		358
Weighted Avg Remaining Amortization Term Prior												355		356
Weighted Avg Remaining Amortization Term Current												354		355
Weighted Average Seasoning Original												2.32		1.52
Weighted Average Seasoning Prior												4.31		3.51
Weighted Average Seasoning Current												5.33		4.51
CHARACTERISTICS
CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Coupon Original						6.05189%		5.90471%		5.89167%		5.87918%		5.97456%
Weighted Average Coupon Prior						6.05129%		5.87830%		5.88737%		5.88268%		5.96889%
Weighted Average Coupon Current						6.05331%		5.85363%		5.87943%		5.88152%		5.96292%
Weighted Average Months to Maturity Original						358		358		359		358		358
Weighted Average Months to Maturity Prior						356		357		357		356		356
Weighted Average Months to Maturity Current						355		356		356		355		355
Weighted Avg Remaining Amortization Term Original						358		358		359		358		358
Weighted Avg Remaining Amortization Term Prior						356		357		357		356		356
Weighted Avg Remaining Amortization Term Current						355		356		356		355		355
Weighted Average Seasoning Original						1.50		1.39		1.20		1.46		1.47
Weighted Average Seasoning Prior						3.49		3.37		3.19		3.45		3.47
Weighted Average Seasoning Current						4.48		4.37		4.18		4.46		4.46





Page 12 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution






Page 13 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
												Group 6		Group 5
Weighted Average Margin Original												2.74990%		2.76144%
Weighted Average Margin Prior												2.74990%		2.76172%
Weighted Average Margin Current												2.74990%		2.76199%
Weighted Average Max Rate Original												11.95892%		12.05988%
Weighted Average Max Rate Prior												11.95705%		12.06021%
Weighted Average Max Rate Current												11.95882%		12.05766%
Weighted Average Min Rate Original												0.00000%		0.00360%
Weighted Average Min Rate Prior												0.00000%		0.00369%
Weighted Average Min Rate Current												0.00000%		0.00378%
Weighted Average Cap Up Original												1.00943%		1.62434%
Weighted Average Cap Up Prior												1.00952%		1.62735%
Weighted Average Cap Up Current												1.00960%		1.63032%
Weighted Average Cap Down Original												1.00943%		1.62434%
Weighted Average Cap Down Prior												1.00952%		1.62735%
Weighted Average Cap Down Current												1.00960%		1.63032%

ARM CHARACTERISTICS
ARM CHARACTERISTICS
						Group 4		Group 3		Group 2		Group 1		Total
Weighted Average Margin Original						2.75742%		2.75249%		2.76175%		2.77040%		2.75880%
Weighted Average Margin Prior						2.75645%		2.75262%		2.76101%		2.77057%		2.75861%
Weighted Average Margin Current						2.75652%		2.75275%		2.76012%		2.76960%		2.75850%
Weighted Average Max Rate Original						12.04559%		11.90471%		11.89251%		11.87918%		11.97251%
Weighted Average Max Rate Prior						12.04487%		11.87830%		11.88823%		11.88268%		11.96680%
Weighted Average Max Rate Current						12.04683%		11.85363%		11.88031%		11.88152%		11.96077%
Weighted Average Min Rate Original						0.01368%		0.00000%		0.00474%		0.05790%		0.00888%
Weighted Average Min Rate Prior						0.01394%		0.00000%		0.00484%		0.05825%		0.00910%
Weighted Average Min Rate Current						0.01409%		0.00000%		0.00496%		0.05855%		0.00932%
Weighted Average Cap Up Original						1.42750%		1.59573%		1.50703%		1.62302%		1.51647%
Weighted Average Cap Up Prior						1.43055%		1.59078%		1.50658%		1.62475%		1.51613%
Weighted Average Cap Up Current						1.43093%		1.59937%		1.50767%		1.62842%		1.51821%
Weighted Average Cap Down Original						1.42750%		1.59573%		1.50703%		1.62302%		1.51647%
Weighted Average Cap Down Prior						1.43055%		1.59078%		1.50658%		1.62475%		1.51613%
Weighted Average Cap Down Current						1.43093%		1.59937%		1.50767%		1.62842%		1.51821%





Page 14 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

SERVICING FEES & ADVANCES

													Group 6		Group 5




Current Servicing Fees												4,063.42		17,430.47
Delinquent Servicing Fees												14,877.71		56,936.40
TOTAL SERVICING FEES												18,941.14		74,366.87


Total Servicing Fees												18,941.14		74,366.87
Compensating Interest												-974.31		-4,985.91
Delinquent Servicing Fees												-14,877.71		-56,936.40
COLLECTED SERVICING FEES												3,089.11		12,444.56


Total Advanced Interest												221,125.46		864,105.76
Total Advanced Principal												15,710.00		38,966.13
Aggregate Advances with respect to this Distribution												236,835.46		903,071.89

SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Group 4		Group 3		Group 2		Group 1		Total




Current Servicing Fees						15,077.95		11,570.97		14,896.69		4,434.39		67,473.88
Delinquent Servicing Fees						41,634.25		43,113.73		40,646.57		17,289.63		214,498.29
TOTAL SERVICING FEES						56,712.20		54,684.70		55,543.26		21,724.02		281,972.19


Total Servicing Fees						56,712.20		54,684.70		55,543.26		21,724.02		281,972.19
Compensating Interest						-2,656.61		-3,427.16		-1,323.83		-615.77		-13,983.58
Delinquent Servicing Fees						-41,634.25		-43,113.73		-40,646.57		-17,289.63		-214,498.29
COLLECTED SERVICING FEES						12,421.34		8,143.80		13,572.87		3,818.62		53,490.31


Total Advanced Interest						630,983.59		627,914.32		600,094.67		253,217.68		3,197,441.49
Total Advanced Principal						19,329.47		20,140.89		18,290.88		18,547.91		130,985.28
Aggregate Advances with respect to this Distribution						650,313.06		648,055.21		618,385.55		271,765.59		3,328,426.77







Page 15 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

ADDITIONAL COLLATERAL INFORMATION
												Group 6		Group 5
Prepayment Interest Shortfall (PPIS)												974.31		4,985.91
Compensating Interest												-974.31		-4,985.91
Net Prepayment Interest Shortfall (PPIS)												0.00		0.00
Weighted Average Net Mortgage Rate												5.574145%		5.670564%

ADDITIONAL COLLATERAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Prepayment Interest Shortfall (PPIS)						2,656.61		3,427.16		1,323.83		615.77		13,983.58
Compensating Interest						-2,656.61		-3,427.16		-1,323.83		-615.77		-13,983.58
Net Prepayment Interest Shortfall (PPIS)						0.00		0.00		0.00		0.00		0.00
Weighted Average Net Mortgage Rate						5.663570%		5.472499%		5.496546%		5.478749%




Page 16 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				12,444,605.59		3,618,874.18		724,000.00		16,787,479.77
			% Balance				1.41%		0.41%		0.08%		1.90%
			# Loans				40		13		2		55
			% # Loans				1.30%		0.42%		0.06%		1.78%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		12,444,605.59		3,618,874.18		724,000.00		16,787,479.77
			% Balance		0.00%		1.41%		0.41%		0.08%		1.90%
			# Loans		0		40		13		2		55
			% # Loans		0.00%		1.30%		0.42%		0.06%		1.78%









Page 17 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,267,156.24		719,721.67		500,000.00		2,486,877.91
			% Balance				1.83%		1.04%		0.72%		3.59%
			# Loans				6		3		1		10
			% # Loans				2.17%		1.09%		0.36%		3.62%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		1,267,156.24		719,721.67		500,000.00		2,486,877.91
			% Balance		0.00%		1.83%		1.04%		0.72%		3.59%
			# Loans		0		6		3		1		10
			% # Loans		0.00%		2.17%		1.09%		0.36%		3.62%










Page 18 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				2,682,087.97		569,400.00		224,000.00		3,475,487.97
			% Balance				1.54%		0.33%		0.13%		2.00%
			# Loans				13		2		1		16
			% # Loans				1.58%		0.24%		0.12%		1.94%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		2,682,087.97		569,400.00		224,000.00		3,475,487.97
			% Balance		0.00%		1.54%		0.33%		0.13%		2.00%
			# Loans		0		13		2		1		16
			% # Loans		0.00%		1.58%		0.24%		0.12%		1.94%










Page 19 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

	GROUP 3
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,624,282.60		1,197,987.10		0.00		2,822,269.70
			% Balance				0.95%		0.70%		0.00%		1.65%
			# Loans				2		3		0		5
			% # Loans				0.57%		0.86%		0.00%		1.44%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		1,624,282.60		1,197,987.10		0.00		2,822,269.70
			% Balance		0.00%		0.95%		0.70%		0.00%		1.65%
			# Loans		0		2		3		0		5
			% # Loans		0.00%		0.57%		0.86%		0.00%		1.44%










Page 20 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

	GROUP 4
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				1,584,610.86		239,590.00		0.00		1,824,200.86
			% Balance				0.89%		0.13%		0.00%		1.02%
			# Loans				7		2		0		9
			% # Loans				0.83%		0.24%		0.00%		1.07%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		1,584,610.86		239,590.00		0.00		1,824,200.86
			% Balance		0.00%		0.89%		0.13%		0.00%		1.02%
			# Loans		0		7		2		0		9
			% # Loans		0.00%		0.83%		0.24%		0.00%		1.07%










Page 21 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

	GROUP 5
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				4,441,488.49		527,175.41		0.00		4,968,663.90
			% Balance				1.93%		0.23%		0.00%		2.16%
			# Loans				11		2		0		13
			% # Loans				1.78%		0.32%		0.00%		2.10%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		4,441,488.49		527,175.41		0.00		4,968,663.90
			% Balance		0.00%		1.93%		0.23%		0.00%		2.16%
			# Loans		0		11		2		0		13
			% # Loans		0.00%		1.78%		0.32%		0.00%		2.10%










Page 22 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

	GROUP 6
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				844,979.43		365,000.00		0.00		1,209,979.43
			% Balance				1.45%		0.62%		0.00%		2.07%
			# Loans				1		1		0		2
			% # Loans				0.58%		0.58%		0.00%		1.17%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		844,979.43		365,000.00		0.00		1,209,979.43
			% Balance		0.00%		1.45%		0.62%		0.00%		2.07%
			# Loans		0		1		1		0		2
			% # Loans		0.00%		0.58%		0.58%		0.00%		1.17%









Page 23 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 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
SPACE INTENTIONALLY LEFT BLANK
SPACE INTENTIONALLY LEFT BLANK



TOTAL



Page 24 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Foreclosure Report
Loan Number			Original		Stated				Current		State &

														First
&			Principal		Principal		Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance		Date		Rate		Origination		Term		Date




TOTAL



Page 25 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

													Group 6		Group 5




*Current*


Number of Paid in Full Loans												4		15
Number of Repurchased Loans												0		0
Total Number of Loans Prepaid in Full												4		15
Curtailments Amount												6,944.79		26,223.91
Paid in Full Balance												2,158,020.90		7,384,240.33
Repurchased Loans Balance												0.00		0.00
Total Prepayment Amount												2,164,965.69		7,410,464.24

*Cumulative*


Number of Paid in Full Loans												6		42
Number of Repurchased Loans												0		3
Total Number of Loans Prepaid in Full												6		45
Paid in Full Balance												3,381,811.92		18,460,574.99
Repurchased Loans Balance												0.00		411,183.57
Curtailments Amount												13,647.82		121,890.47
Total Prepayment Amount												3,395,459.74		18,993,649.03

VOLUNTARY PREPAYMENTS

							Group 4		Group 3		Group 2		Group 1		Total




*Current*


Number of Paid in Full Loans						12		8		16		1		56
Number of Repurchased Loans						0		0		0		0		0
Total Number of Loans Prepaid in Full						12		8		16		1		56
Curtailments Amount						17,093.75		10,553.71		172,436.54		10,711.09		243,963.79
Paid in Full Balance						2,841,246.94		3,677,787.21		3,508,842.82		278,400.00		19,848,538.20
Repurchased Loans Balance						0.00		0.00		0.00		0.00		0.00
Total Prepayment Amount						2,858,340.69		3,688,340.92		3,681,279.36		289,111.09		20,092,501.99

*Cumulative*


Number of Paid in Full Loans						33		37		55		6		179
Number of Repurchased Loans						0		1		0		0		4
Total Number of Loans Prepaid in Full						33		38		55		6		183
Paid in Full Balance						8,211,358.67		21,329,894.55		12,210,035.38		1,234,253.36		64,827,928.87
Repurchased Loans Balance						0.00		397,588.00		0.00		0.00		808,771.57
Curtailments Amount						60,178.69		352,906.71		333,677.69		58,306.92		940,608.30
Total Prepayment Amount						8,271,537.36		22,080,389.26		12,543,713.07		1,292,560.28		66,577,308.74





Page 26 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution






Page 27 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

													Group 6		Group 5



SMM												3.57%		3.11%
3 Months Avg SMM												1.87%		2.21%
12 Months Avg SMM												1.40%		1.96%
Avg SMM Since Cut-off												1.40%		1.96%


CPR												35.38%		31.59%
3 Months Avg CPR												20.23%		23.52%
12 Months Avg CPR												15.59%		21.14%
Avg CPR Since Cut-off												15.59%		21.14%


PSA												3,316.95%		3,502.90%
3 Months Avg PSA Approximation												2,343.06%		3,347.00%
12 Months Avg PSA Approximation												2,041.98%		3,505.94%
Avg PSA Since Cut-off Approximation												2,041.98%		3,505.95%

VOLUNTARY PREPAYMENTS RATES



							Group 4		Group 3		Group 2		Group 1		Total



SMM						1.58%		2.11%		2.07%		0.42%		2.23%
3 Months Avg SMM						1.39%		3.03%		2.02%		0.41%		2.01%
12 Months Avg SMM						1.13%		2.99%		1.72%		0.46%		1.80%
Avg SMM Since Cut-off						1.13%		2.99%		1.72%		0.46%		1.80%


CPR						17.35%		22.56%		22.21%		4.88%		23.68%
3 Months Avg CPR						15.44%		30.91%		21.75%		4.78%		21.64%
12 Months Avg CPR						12.70%		30.49%		18.84%		5.40%		19.61%
Avg CPR Since Cut-off						12.70%		30.49%		18.84%		5.40%		19.61%


PSA						1,934.11%		2,581.91%		2,655.88%		547.56%		2,653.42%
3 Months Avg PSA Approximation						2,212.43%		4,582.21%		3,412.29%		691.64%		3,123.23%
12 Months Avg PSA Approximation						2,122.53%		5,300.12%		3,503.04%		913.97%		3,304.19%
Avg PSA Since Cut-off Approximation						2,122.54%		5,300.12%		3,503.04%		913.97%		3,304.18%







Page 28 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution











Page 29 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 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/(0.002*min(30,WAS))
	PSA Standard Prepayment Model: CPR/(0.002*min(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)
	Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^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)

	Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.
	Dates correspond to distribution dates.




Page 30 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 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

2619674 2			140,000.00		140,000.00			01-Dec-2004		5.625%		CA - 80.00%		Paid Off - 360		09/01/2004
2619674 2			140,000.00		140,000.00			01-Dec-2004		5.625%		CA - 80.00%		Paid Off - 360		09/01/2004
3321860 2			250,542.00		250,534.48			19-Nov-2004		6.000%		CA - 80.00%		Paid Off - 360		09/01/2004
3343871 4			215,934.00		215,934.00			19-Nov-2004		6.625%		FL - 85.00%		Paid Off - 360		08/01/2004
3529313 5			406,250.00		405,142.24			22-Nov-2004		6.500%		NV - 80.00%		Paid Off - 360		09/01/2004
3566816 4			121,512.00		121,511.97			19-Nov-2004		6.250%		NV - 80.00%		Paid Off - 360		05/01/2004
3602027 4			239,400.00		239,400.00			22-Nov-2004		7.500%		MD - 95.00%		Paid Off - 360		07/01/2004
3656324 4			136,000.00		136,000.00			01-Dec-2004		6.000%		CA - 80.00%		Paid Off - 360		06/01/2004
3658488 5			415,200.00		415,200.00			18-Nov-2004		6.500%		NV - 79.99%		Paid Off - 360		07/01/2004
3674863 5			490,100.00		490,099.98			02-Dec-2004		6.625%		NV - 80.00%		Paid Off - 360		08/01/2004
3695593 3			434,045.00		432,424.07			01-Dec-2004		6.375%		NV - 80.00%		Paid Off - 360		08/01/2004
3741541 2			332,000.00		332,000.00			01-Dec-2004		7.250%		CA - 80.00%		Paid Off - 360		06/01/2004
3806374 2			258,400.00		258,400.00			01-Dec-2004		6.375%		AZ - 80.00%		Paid Off - 360		08/01/2004
3808568 5			499,000.00		497,224.35			01-Dec-2004		6.625%		CA - 77.97%		Paid Off - 360		08/01/2004
3815718 5			400,000.00		400,000.00			23-Nov-2004		6.000%		CA - 79.68%		Paid Off - 360		07/01/2004
3823730 6			631,200.00		628,026.63			22-Nov-2004		6.000%		CA - 80.00%		Paid Off - 360		07/01/2004
3832099 6			610,000.00		607,666.70			07-Dec-2004		6.250%		VA - 69.95%		Paid Off - 360		08/01/2004
3835182 4			139,600.00		139,600.00			16-Nov-2004		6.375%		NV - 80.00%		Paid Off - 360		08/01/2004
3839763 2			260,000.00		259,980.53			30-Nov-2004		6.125%		CA - 80.00%		Paid Off - 360		08/01/2004
3854141 5			675,800.00		675,800.00			18-Nov-2004		5.750%		CA - 60.07%		Paid Off - 360		08/01/2004
3857282 4			312,000.00		312,000.00			02-Dec-2004		7.500%		CA - 80.00%		Paid Off - 360		08/01/2004
3858880 5			260,000.00		258,931.85			18-Nov-2004		5.875%		CA - 72.22%		Paid Off - 360		08/01/2004
3860103 3			750,000.00		750,000.00			24-Nov-2004		6.000%		CA - 71.43%		Paid Off - 360		08/01/2004
3869368 5			520,000.00		520,000.00			30-Nov-2004		6.875%		CA - 79.27%		Paid Off - 360		08/01/2004
3869399 6			273,450.00		273,450.00			29-Nov-2004		6.375%		CA - 79.99%		Paid Off - 360		08/01/2004
3878721 3			496,800.00		496,800.00			17-Nov-2004		6.500%		GA - 90.00%		Paid Off - 360		08/01/2004
3890508 3			474,050.00		472,363.14			30-Nov-2004		6.625%		NV - 95.00%		Paid Off - 360		08/01/2004
3895911 3			376,000.00		376,000.00			22-Nov-2004		6.125%		CA - 79.75%		Paid Off - 360		08/01/2004
3899490 5			350,080.00		350,080.00			07-Dec-2004		6.000%		CA - 80.00%		Paid Off - 360		08/01/2004
3918296 4			240,000.00		239,800.00			30-Nov-2004		6.500%		CO - 80.00%		Paid Off - 360		08/01/2004
3937631 2			150,000.00		149,999.99			01-Dec-2004		5.875%		MI - 80.00%		Paid Off - 360		08/01/2004
3953094 5			600,000.00		598,241.57			06-Dec-2004		6.125%		MA - 54.55%		Paid Off - 360		09/01/2004
3953780 2			306,000.00		306,000.00			29-Nov-2004		6.000%		CA - 75.00%		Paid Off - 360		09/01/2004
3957432 5			500,000.00		479,753.15			06-Dec-2004		6.250%		CA - 78.74%		Paid Off - 360		09/01/2004
3962489 5			580,000.00		580,000.00			30-Nov-2004		6.125%		CA - 80.00%		Paid Off - 360		09/01/2004
3963269 4			328,000.00		328,000.00			24-Nov-2004		6.375%		CA - 80.00%		Paid Off - 360		08/01/2004
3965365 6			650,000.00		648,877.57			01-Dec-2004		6.750%		NY - 48.15%		Paid Off - 360		10/01/2004
120013551 4			272,000.00		271,998.91			18-Nov-2004		7.375%		NJ - 80.00%		Paid Off - 360		09/01/2004
120013551 4			272,000.00		271,998.91					7.375%		NJ - 80.00%		Paid Off - 360



Page 31 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 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

120021764 5			496,000.00		495,400.00			02-Dec-2004		6.500%		CA - 80.00%		Paid Off - 360		08/01/2004
120021764 5			496,000.00		495,400.00			02-Dec-2004		6.500%		CA - 80.00%		Paid Off - 360		08/01/2004
120024403 5			472,000.00		470,618.29			01-Dec-2004		5.875%		CA - 78.67%		Paid Off - 360		09/01/2004
120025544 2			169,000.00		168,996.28			22-Nov-2004		5.750%		CA - 70.42%		Paid Off - 360		09/01/2004
120035113 2			328,500.00		328,500.00			06-Dec-2004		6.125%		CA - 90.00%		Paid Off - 360		09/01/2004
120036089 2			128,000.00		127,816.00			03-Dec-2004		5.625%		GA - 45.71%		Paid Off - 360		10/01/2004
120040244 5			750,000.00		747,748.90			23-Nov-2004		6.000%		CA - 57.69%		Paid Off - 360		09/01/2004
120043043 2			182,400.00		182,375.54			06-Dec-2004		5.750%		CO - 80.00%		Paid Off - 360		09/01/2004
120045684 3			383,200.00		383,200.00			17-Nov-2004		5.750%		NV - 79.83%		Paid Off - 360		09/01/2004
120055703 2			327,200.00		327,200.00			30-Nov-2004		5.375%		CA - 80.00%		Paid Off - 360		09/01/2004
120055948 2			153,600.00		153,600.00			22-Nov-2004		5.875%		FL - 80.00%		Paid Off - 360		09/01/2004
120056592 2			160,000.00		160,000.00			23-Nov-2004		5.750%		CA - 57.14%		Paid Off - 360		09/01/2004
120083165 4			280,000.00		278,887.21			01-Dec-2004		6.125%		CA - 80.00%		Paid Off - 360		09/01/2004
120088200 4			228,000.00		228,000.00			29-Nov-2004		6.875%		MD - 78.08%		Paid Off - 360		09/01/2004
120094239 4			330,700.00		330,114.85			01-Dec-2004		6.625%		NY - 64.84%		Paid Off - 360		10/01/2004
120098828 2			81,600.00		81,600.00			07-Dec-2004		7.125%		MI - 80.00%		Paid Off - 360		10/01/2004
120110315 3			416,000.00		416,000.00			01-Dec-2004		5.625%		CA - 64.90%		Paid Off - 360		10/01/2004
120118308 3			351,000.00		351,000.00			02-Dec-2004		8.125%		CA - 89.99%		Paid Off - 360		10/01/2004
120129345 1			278,400.00		278,400.00			18-Nov-2004		6.500%		CA - 80.00%		Paid Off - 360		10/01/2004
120131040 2			281,840.00		281,840.00			30-Nov-2004		5.750%		CA - 80.00%		Paid Off - 360		09/01/2004


TOTAL			19,890,803.00		19,848,538.20
TOTAL


Page 32 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



													Group 6		Group 5


*Current*
*Current*



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

*Cumulative*
*Cumulative*



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





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

COLLATERAL REALIZED LOSSES



							Group 4		Group 3		Group 2		Group 1		Total


*Current*
*Current*



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

*Cumulative*
*Cumulative*



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





		Special Hazard Loss Coverage Amt														9,023,109.60
		Fraud Loss Coverage Amt														28,480,045.00
		Bankruptcy Loss Coverage Amt														231,909.00







Page 33 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution





Page 34 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution


DEFAULT SPEEDS



													Group 6		Group 5



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


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


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


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

DEFAULT SPEEDS



							Group 4		Group 3		Group 2		Group 1		Total



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


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


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


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








Page 35 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution








Page 36 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution



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



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

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

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

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

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

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

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




Page 37 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Realized Loss Detail Report
Loan Number			Current		State &				Prior		Realized				Cumulative
															Cumulative
&		Loan	Note		LTV at		Original		Principal		Loss/(Gain)		Realized		Realized

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




TOTAL



Page 38 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
												Group 6		Group 5
Has Optional Termination Date Reached (0=No,1=Yes)
Has Sr. Credit Supp. Depletion Date Occured (0=No,1=Yes)												0		0
Has Spl. Haz. Cov. Term. Date Occured (0=No,1=Yes)
Has Fraud Loss Coverage Term. Date Occured (0=No,1=Yes)
Has Bankrpt Loss Cov. Term. Date Occured (0=No,1=Yes)

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



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK





Page 39 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
												Group 6		Group 5
Current Senior Percentage												91.837595%		91.624478%
Next Senior Percentage												91.535145%		91.355225%
Current Subordinate Percentage												8.162405%		8.375522%
Next Subordinate Percentage												8.464855%		8.644775%
Senior Prepayment Percentage												100.000000%		100.000000%
Next Senior Prepayment Percentage												100.000000%		100.000000%
Subordinate Prepayment Percentage												0.000000%		0.000000%
Next Subordinate Prepayment Percentage												0.000000%		0.000000%

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Senior Percentage						91.761371%		91.177404%		91.601090%		91.884437%
Next Senior Percentage						91.629513%		90.987415%		91.423429%		91.850534%
Current Subordinate Percentage						8.238629%		8.822596%		8.398910%		8.115563%
Next Subordinate Percentage						8.370487%		9.012585%		8.576571%		8.149466%
Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Next Senior Prepayment Percentage						100.000000%		100.000000%		100.000000%		100.000000%
Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%
Next Subordinate Prepayment Percentage						0.000000%		0.000000%		0.000000%		0.000000%




Page 40 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
												Group 6		Group 5
Current Scheduled Payments												320,484.91		1,251,825.06
Current Scheduled Payments 1 Month Prior												324,757.15		1,282,621.87
Current Scheduled Payments 2 Month Prior												328,986.15		1,299,999.75
Current Scheduled Payments 3 Month Prior												329,718.52		1,313,687.04
Current Scheduled Payments 4 Month Prior												0.00		0.00
Current Scheduled Payments 5 Month Prior												0.00		0.00
Current Scheduled Payments 6 Month Prior												0.00		0.00
Current Scheduled Payments 7 Month Prior												0.00		0.00
Current Scheduled Payments 8 Month Prior												0.00		0.00
Current Scheduled Payments 9 Month Prior												0.00		0.00
Current Scheduled Payments 10 Month Prior												0.00		0.00
Current Scheduled Payments 11 Month Prior												0.00		0.00


Sched. Payments for 60+Day Delinquent Loans												1,939.06		2,963.25
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior												0.00		754.56
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior												0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior												0.00		0.00


Variable Rate Certificates - Next PTR Details:
Next Period Pass Through Rate - Class 1-A
Next Period Pass Through Rate - Class 2-A
Next Period Pass Through Rate - Classes 3-A-1,3-A-2 &
Next Period Pass Through Rate - Class 4-A
Next Period Pass Through Rate - Classes 5-A-1 & 5-A-2
Next Period Pass Through Rate - Subordinated Classes

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




Page 41 of 42
IndyMac INDX Mortgage Loan Trust 2004-AR6

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-AR6

December 27, 2004 Distribution

ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
						Group 4		Group 3		Group 2		Group 1		Total
Current Scheduled Payments						943,930.93		879,714.00		896,162.82		361,563.28		4,653,681.01
Current Scheduled Payments 1 Month Prior						953,839.08		927,803.34		918,924.34		363,692.07		4,771,637.85
Current Scheduled Payments 2 Month Prior						968,555.51		950,426.40		935,106.05		364,533.26		4,847,607.12
Current Scheduled Payments 3 Month Prior						972,072.53		980,628.89		943,685.15		366,591.36		4,906,383.49
Current Scheduled Payments 4 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 5 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 6 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 7 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 8 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 9 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 10 Month Prior						0.00		0.00		0.00		0.00		0.00
Current Scheduled Payments 11 Month Prior						0.00		0.00		0.00		0.00		0.00


Sched. Payments for 60+Day Delinquent Loans						1,340.92		6,646.12		3,792.98		6,894.31		23,576.64
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior						778.08		0.00		1,003.33		3,980.21		6,516.18
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior						0.00		0.00		1,003.33		2,708.33		3,711.67
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


Variable Rate Certificates - Next PTR Details:
Next Period Pass Through Rate - Class 1-A														5.50%
Next Period Pass Through Rate - Class 2-A														5.61%
Next Period Pass Through Rate - Classes 3-A-1,3-A-2 &														5.59%
Next Period Pass Through Rate - Class 4-A														5.76%
Next Period Pass Through Rate - Classes 5-A-1 & 5-A-2														5.85%
Next Period Pass Through Rate - Subordinated Classes														5.69%

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 42 of 42

IndyMac INDX Mortgage Loan Trust 2004-AR6 8-K