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): ~~September~~December 27, 2004 (Date of earliest event reported) Indymac MBS Inc (as Depositor under the Pooling and Servicing Agreement, dated as March 1, 2004, providing for the issuance of Residential Asset Securitization Trust Series 2004-A2 Mortgage Pass-Through Certificates, Series 2004-B) (Exact name of registrant as specified in charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-102888-19 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 ~~September~~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: ~~Sep~~Dec 27, 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 ~~September~~December 27, 2004.

	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	September 27, 2004 Distribution
	December 27, 2004 Distribution
	Contents
			TABLE OF CONTENTS
								Page
			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				6
			4.	Credit Enhancement Report				9
			5.	Collateral Report				10
			6.	Delinquency Report				13
			7.	REO Report				16
			8.	Prepayment Report				17
			9.	Prepayment Detail Report				20
			10.	Realized Loss Report				2221
			11.	Realized Loss Detail Report				2524
			12.	Triggers, Adj. Rate Cert. and Miscellaneous Report				2625
			13.	Other Related Information				2726
			14.	Additional Certificate Report				2827
				Total Number of Pages				2827
			CONTACTS
				Administrator: Brent Hoyler
				Direct Phone Number: (714)247-6322
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705
				Web Site: https://www.corporatetrust.db.com/invr
				Web Site: https://www.tss.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000
ISSUANCE INFORMATION
	Seller:		IndyMac Bank					Cut-Off Date: March 1, 2004
	Certificate Insurer(s):		MBIA Insurance Corporation					Closing Date: ~~December~~March 2930, ~~2003~~2004
								First Payment Date: April 26, 2004
	Servicer(s):		IndyMac Bank Master Servicer
								Distribution Date: September 27, 2004
								Distribution Date: December 27, 2004
	Underwriter(s):		Goldman, Sachs & Co. Underwriter					Record Date: ~~August~~November 3130, 2004
						Page 1 of 28					© COPYRIGHT 2004 Deutsche Bank
						Page 1 of 27					© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Certificate Payment Report for September 27, 2004 Distribution
	Certificate Payment Report for December 27, 2004 Distribution
	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
1-A-1		72,508,000.00			6764,~~134~~003,~~966~~189.9863	~~223~~213,~~783~~343.2297	1,~~051~~028,~~492~~896.7749	1,~~275~~242,~~275~~240.9946	-	-	6662,~~083~~974,~~474~~293.2113
1-A-2		500,000.00			500,000.00	2,291.67	-	2,291.67	-	-	500,000.00
1-A-3		44,800,875.00			4139,~~577~~697,~~055~~988.1978	6985,~~814~~371.8152	~~630~~617,~~895~~337.6690	~~700~~702,~~710~~709.4742	-	-	4039,~~946~~080,~~159~~650.5388
1-A-4		-			-	~~207~~179,~~365~~281.5674	-	~~207~~179,~~365~~281.5674	-	-	-
1-A-5		51,000,000.00			4823,~~103~~403,~~366~~891.3002	~~220~~107,~~473~~267.7683	92,~~902~~813,~~977~~428.3122	102,~~123~~920,~~451~~696.0705	-	-	3820,~~200~~590,~~388~~462.9980
1-A-6		14,178,000.00			14,178,000.00	64,982.50	-	64,982.50	-	-	14,178,000.00
1-A-7		5,000,000.00			~~1,821,237.93~~-	~~8,347.34~~-	~~1,821,237.93~~-	~~1,829,585.27~~-	-	-	-
1-A-8		22,350,000.00			22,350,000.00	97,781.25	-	97,781.25	-	-	22,350,000.00
1-A-9		2,160,125.00			2,160,125.00	7,200.42	-	7,200.42	-	-	2,160,125.00
1-A-10		-			-	4,656.25	-	4,656.25	-	-	-
1-A-X		-			-	7857,~~890~~347.3963	-	7857,~~890~~347.3963	-	-	-
1-PO		952,462.50			~~930~~829,~~703~~353.9401	-	772,~~200~~276.2827	772,~~200~~276.2827	-	-	~~853~~827,~~503~~076.6674
1-B-1		5,252,000.00			54,~~217~~854,~~827~~619.8362	2322,~~915~~250.0434	~~242~~12,~~091~~274.2992	~~266~~34,~~006~~525.3326	-	-	4,~~975~~842,~~736~~344.5470
1-B-2		1,788,000.00			1,~~776~~652,~~366~~715.3713	87,~~141~~574.6894	824,~~417~~178.9890	9011,~~559~~753.6684	-	-	1,~~693~~648,~~948~~536.3924
1-B-3		1,006,000.00			~~999~~929,~~454~~883.4535	4,~~580~~261.8397	462,~~371~~351.6421	506,~~952~~613.4718	-	-	~~953~~927,~~082~~532.8213
1-B-4		671,000.00			~~666~~620,~~634~~230.1334	32,~~055~~842.4172	301,~~929~~568.7925	334,~~985~~410.2097	-	-	~~635~~618,~~704~~662.3409
1-B-5		335,000.00			~~332~~309,~~820~~653.3200	1,~~525~~419.4324	~~15,441~~782.8596	162,~~967~~202.2820	-	-	~~317~~308,~~378~~870.4704
1-B-6		1,006,493.00			~~999~~930,~~944~~339.2505	4,~~583~~264.0805	462,~~394~~352.3637	506,~~977~~616.4442	-	-	~~953~~927,~~549~~986.8868
Total		223,507,955.50			~~208~~176,~~748~~419,~~502~~987.6992	1862,~~031,388~~138.6404	134,~~947~~485,~~450~~447.8649	145,~~978~~347,~~839~~585.5053	-	-	~~194~~171,~~801~~934,~~051~~540.8343
	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)
1-A-1				F-30/360	45660NB20	72,508,000.00	~~925~~882.~~897377~~705214	32.~~086325~~942351	14.~~501748~~190110	17.~~588073~~132461	~~911~~868.~~395628~~515104
1-A-2				F-30/360	45660NB38	500,000.00	1,000.000000	4.583340	-	4.583340	1,000.000000
1-A-3				A-30/360	45660NB46	44,800,875.00	~~928~~886.~~041142~~098514	1.~~558336~~905577	1413.~~082217~~779595	15.~~640553~~685172	~~913~~872.~~958924~~318920
1-A-4				A-30/360	45660NB53	44,800,875.00	~~928~~886.~~041142~~098514	4.~~628605~~001746	-	4.~~628605~~001746	~~913~~872.~~958924~~318920
1-A-5				F-30/360	45660NB61	51,000,000.00	~~943~~458.~~203261~~899824	42.~~323015~~103291	~~194~~55.~~176026~~165259	~~198~~57.~~499041~~268550	~~749~~403.~~027235~~734565
1-A-6				F-30/360	45660NB79	14,178,000.00	1,000.000000	4.583333	-	4.583333	1,000.000000
1-A-7				F-30/360	45660NB87	5,000,000.00	~~364.247586~~-	~~1.669468~~-	~~364.247586~~-	~~365.917054~~-	-
1-A-8				F-30/360	45660NB95	22,350,000.00	1,000.000000	4.375000	-	4.375000	1,000.000000
1-A-9				F-30/360	45660NC29	2,160,125.00	1,000.000000	3.333335	-	3.333335	1,000.000000
1-A-10				F-30/360	45660NC94	22,350,000.00	1,000.000000	0.208333	-	0.208333	1,000.000000
1-A-X				A-30/360	45660NC45	184,665,882.00	~~922~~754.~~040088~~387782	0.~~427206~~310548	-	0.~~427206~~310548	~~850~~732.~~672152~~086650
1-PO				-	45660NC37	952,462.50	~~977~~870.~~155468~~746103	-	812.~~053354~~389879	812.~~053354~~389879	~~896~~868.~~102114~~356224
1-B-1				F-30/360	45660NC60	5,252,000.00	~~993~~924.~~493493~~337323	4.~~553511~~236546	462.~~095067~~337190	506.~~648578~~573736	~~947~~922.~~398427~~000133
1-B-2				F-30/360	45660NC78	1,788,000.00	~~993~~924.~~493493~~337323	4.~~553512~~236544	462.~~095067~~337190	506.~~648579~~573734	~~947~~922.~~398427~~000133
1-B-3				F-30/360	45660NC86	1,006,000.00	~~993~~924.~~493493~~337323	4.~~553509~~236551	462.~~095067~~337190	506.~~648576~~573741	~~947~~922.~~398427~~000133
1-B-4				F-30/360	45660ND85	671,000.00	~~993~~924.~~493493~~337323	4.~~553517~~236542	462.~~095067~~337190	506.~~648584~~573733	~~947~~922.~~398427~~000133
1-B-5				F-30/360	45660ND93	335,000.00	~~993~~924.~~493493~~337323	4.~~553522~~236537	462.~~095067~~337190	506.~~648589~~573727	~~947~~922.~~398427~~000133
1-B-6				F-30/360	45660NE27	1,006,493.00	~~993~~924.~~493493~~337323	4.~~553514~~236542	462.~~095067~~337190	506.~~648581~~573732	~~947~~922.~~398427~~000133
							Page 2 of 28				© COPYRIGHT 2004 Deutsche Bank
							Page 2 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Certificate Payment Report for September 27, 2004 Distribution
	Certificate Payment Report for December 27, 2004 Distribution
	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
1-A-1	72,508,000.00		12,~~396~~046,~~171~~591.0481		57,~~168~~582,~~598~~956.6432	1,~~255~~950,~~927~~750.1555	69,~~424~~533,~~525~~706.7987	711,~~820~~580,~~696~~298.8368	-	-	6662,~~083~~974,~~474~~293.2113
1-A-2	500,000.00		1320,~~750~~625.0203		-	-	-	1320,~~750~~625.0203	-	-	500,000.00
1-A-3	44,800,875.00		~~360~~600,~~783~~959.3029		34,~~101~~549,~~159~~773.1879	~~753~~1,~~556~~170,450.2933	35,~~854~~720,~~715~~224.4712	46,~~215~~321,~~498~~183.7741	-	-	4039,~~946~~080,~~159~~650.5388
1-A-4	-		1,~~366~~932,~~464~~715.9740		-	-	-	1,~~366~~932,~~464~~715.9740	-	-	-
1-A-5	51,000,000.00		1,~~364~~780,~~246~~711.3071		519,~~660~~587,~~653~~368.1319	710,~~138~~822,~~957~~169.8801	1230,~~799~~409,~~611~~537.0120	1432,~~163~~190,~~857~~248.3191	-	-	3820,~~200~~590,~~388~~462.9980
1-A-6	14,178,000.00		~~389~~584,~~895~~842.0050		-	-	-	~~389~~584,~~895~~842.0050	-	-	14,178,000.00
1-A-7	5,000,000.00		79,986.26		3,416,632.55	1,583,367.45	5,000,000.00	5,079,986.26	-	-	-
1-A-8	22,350,000.00		~~586~~880,~~687~~031.5025		-	-	-	~~586~~880,~~687~~031.5025	-	-	22,350,000.00
1-A-9	2,160,125.00		4364,~~202~~803.5278		-	-	-	4364,~~202~~803.5278	-	-	2,160,125.00
1-A-10	-		2741,~~937~~906.5025		-	-	-	2741,~~937~~906.5025	-	-	-
1-A-X	-		~~498~~683,~~403~~707.70		-	-	-	~~498~~683,~~403~~707.70	-	-	-
1-PO	952,462.50		-		-	98125,~~958~~385.8476	98125,~~958~~385.8476	98125,~~958~~385.8476	-	-	~~853~~827,~~503~~076.6674
1-B-1	5,252,000.00		~~143~~211,~~882~~721.6888		~~103~~171,~~898~~518.6893	~~172~~238,~~364~~136.7837	~~276~~409,~~263~~655.4630	~~420~~621,~~146~~377.1418	-	-	4,~~975~~842,~~736~~344.5470
1-B-2	1,788,000.00		4872,~~983~~078.6897		3558,~~371~~392.4520	5881,~~680~~071.1756	94139,~~051~~463.6176	~~143~~211,~~035~~542.2973	-	-	1,~~693~~648,~~948~~536.3924
1-B-3	1,006,000.00		2740,~~560~~554.1549		1932,~~901~~853.3878	3345,~~015~~614.8009	5278,~~917~~467.1887	80119,~~477~~022.3336	-	-	~~953~~927,~~082~~532.8213
1-B-4	671,000.00		1827,~~382~~049.5877		1321,~~274~~913.1841	2230,~~021~~424.4751	3552,~~295~~337.6691	5379,~~678~~387.2468	-	-	~~635~~618,~~704~~662.3409
1-B-5	335,000.00		913,~~177~~504.6073		610,~~627~~940.2037	1015,~~994~~189.3358	1726,~~621~~129.5396	2639,~~799~~634.1369	-	-	~~317~~308,~~378~~870.4704
1-B-6	1,006,493.00		2740,~~573~~574.6737		1932,~~911~~869.1488	3345,~~031~~636.9844	5278,~~943~~506.1232	80119,~~516~~080.7969	-	-	~~953~~927,~~549~~986.8868
Total	223,507,955.50		69,~~403~~122,~~088~~365.4719		1735,~~546~~465,~~027~~219.5443	1116,~~160~~108,~~876~~195.1364	2851,~~706~~573,~~903~~415.6707	3560,~~109~~695,~~992~~780.1426	-	-	~~194~~171,~~801~~934,~~051~~540.8343
	Interest Detail
	Pass-	Prior Principal				Non-	Prior	Unscheduled		Paid or	Current
	Through	(with Notional)			Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid
Class	Rate	Balance			Interest	Interest SF	Interest	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
1-A-1	4.00000%	6764,~~134~~003,~~966~~189.9863			~~223~~213,~~783~~343.2297	-	-	-	~~223~~213,~~783~~343.2297	~~223~~213,~~783~~343.2297	-
1-A-2	5.50000%	500,000.00			2,291.67	-	-	-	2,291.67	2,291.67	-
1-A-3	2.~~01500~~58063%	4139,~~577~~697,~~055~~988.1978			6985,~~814~~371.8152	-	-	-	6985,~~814~~371.8152	6985,~~814~~371.8152	-
1-A-4	5.~~98500~~41937%	4139,~~577~~697,~~055~~988.1978			~~207~~179,~~365~~281.5674	-	-	-	~~207~~179,~~365~~281.5674	~~207~~179,~~365~~281.5674	-
1-A-5	5.50000%	4823,~~103~~403,~~366~~891.3002			~~220~~107,~~473~~267.7683	-	-	-	~~220~~107,~~473~~267.7683	~~220~~107,~~473~~267.7683	-
1-A-6	5.50000%	14,178,000.00			64,982.50	-	-	-	64,982.50	64,982.50	-
1-A-7	5.50000%	~~1,821,237.93~~-			~~8,347.34~~-	-	-	-	~~8,347.34~~-	~~8,347.34~~-	-
1-A-8	5.25000%	22,350,000.00			97,781.25	-	-	-	97,781.25	97,781.25	-
1-A-9	4.00000%	2,160,125.00			7,200.42	-	-	-	7,200.42	7,200.42	-
1-A-10	0.25000%	22,350,000.00			4,656.25	-	-	-	4,656.25	4,656.25	-
1-A-X	0.~~55599~~49399%	~~170~~139,~~269~~309,~~346~~685.1021			7857,~~890~~347.3963	-	-	-	7857,~~890~~347.3963	7857,~~890~~347.3963	-
1-PO		~~930~~829,~~703~~353.9401			-	-	-	-	-	-	-
1-B-1	5.50000%	54,~~217~~854,~~827~~619.8362			2322,~~915~~250.0434	-	-	-	2322,~~915~~250.0434	2322,~~915~~250.0434	-
1-B-2	5.50000%	1,~~776~~652,~~366~~715.3713			87,~~141~~574.6894	-	-	-	87,~~141~~574.6894	87,~~141~~574.6894	-
1-B-3	5.50000%	~~999~~929,~~454~~883.4535			4,~~580~~261.8397	-	-	-	4,~~580~~261.8397	4,~~580~~261.8397	-
1-B-4	5.50000%	~~666~~620,~~634~~230.1334			32,~~055~~842.4172	-	-	-	32,~~055~~842.4172	32,~~055~~842.4172	-
1-B-5	5.50000%	~~332~~309,~~820~~653.3200			1,~~525~~419.4324	-	-	-	1,~~525~~419.4324	1,~~525~~419.4324	-
1-B-6	5.50000%	~~999~~930,~~944~~339.2505			4,~~583~~264.0805	-	-	-	4,~~583~~264.0805	4,~~583~~264.0805	-
Total		~~442~~377,~~944~~777,~~903~~661.9891			1862,~~031,388~~138.6404	-	-	-	1862,~~031,388~~138.6404	1862,~~031,388~~138.6404	-
							Page 3 of 28				© COPYRIGHT 2004 Deutsche Bank
							Page 3 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Certificate Payment Report for September 27, 2004 Distribution
	Certificate Payment Report for December 27, 2004 Distribution
	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
2-A-1		59,730,000.00			4538,~~766~~303,~~801~~175.3952	8287,~~570~~159.9483	31,~~278~~669,~~212~~503.6643	31,~~360~~756,~~783~~663.6026	-	-	4236,~~488~~633,~~588~~672.7309
2-A-2		-			-	~~212~~159,~~110~~273.6469	-	~~212~~159,~~110~~273.6469	-	-	-
2-B-1		674,000.00			~~656~~609,~~794~~658.2670	32,~~010~~794.3127	393,~~913~~759.6089	426,~~923~~554.9116	-	-	~~616~~605,~~880~~898.6681
2-B-2		306,000.00			~~298~~276,~~188~~788.4967	1,~~366~~268.7061	181,~~121~~707.01	192,~~487~~975.7162	-	-	~~280~~275,~~067~~081.4865
2-B-3		214,000.00			~~208~~193,~~537~~571.0516	~~955~~887.7920	121,~~672~~193.8679	132,~~628~~080.6599	-	-	~~195~~192,~~864~~377.1937
2-B-4		123,000.00			~~119~~111,~~860~~258.0819	~~549~~509.3693	~~7,283~~686.9415	71,~~833~~196.3008	-	-	~~112~~110,~~576~~572.1404
2-B-5		92,000.00			8983,~~651~~217.4451	~~410~~381.9041	~~5,448~~513.1522	~~5,859~~894.0563	-	-	8482,~~203~~704.29
2-B-6		122,881.00			~~119~~111,~~744~~150.1255	~~548~~509.8344	~~7,276~~685.8949	71,~~825~~194.7293	-	-	~~112~~110,~~467~~465.2306
2-B-X		-			-	2,~~769~~564.7405	-	2,~~769~~564.7405	-	-	-
P		100.00			100.00	-	-	-	-	-	100.00
A-R		100.00			-	-	-	-	-	-	-
Total		61,262,081.00			4739,~~259~~688,~~676~~920.8329	~~304~~255,~~293~~348.2143	31,~~368~~678,~~929~~048.1199	31,~~673~~933,~~222~~397.3242	-	-	4338,~~890~~010,~~747~~871.7230
	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)
2-A-1				A-30/360	45660ND28	59,730,000.00	~~766~~641.~~228049~~271983	1.~~382403~~459230	5427.~~883855~~950836	5629.~~266258~~410066	~~711~~613.~~344194~~321147
2-A-2				A-30/360	45660ND36	59,730,000.00	~~766~~641.~~228049~~271983	32.~~551158~~666561	-	32.~~551158~~666561	~~711~~613.~~344194~~321147
2-B-1				F-30/360	45660ND44	674,000.00	~~974~~904.~~472196~~538127	4.~~466335~~145801	595.~~218994~~578475	639.~~685330~~724276	~~915~~898.~~253202~~959652
2-B-2				F-30/360	45660ND51	306,000.00	~~974~~904.~~472196~~538127	4.~~466340~~145784	595.~~218994~~578475	639.~~685334~~724259	~~915~~898.~~253202~~959652
2-B-3				F-30/360	45660ND69	214,000.00	~~974~~904.~~472196~~538127	4.~~466308~~145794	595.~~218994~~578475	639.~~685303~~724270	~~915~~898.~~253202~~959652
2-B-4				F-30/360	45660NE35	123,000.00	~~974~~904.~~472196~~538128	4.~~466341~~145772	595.~~218994~~578476	639.~~685336~~724248	~~915~~898.~~253202~~959652
2-B-5				F-30/360	45660NE43	92,000.00	~~974~~904.~~472197~~538127	4.~~466304~~145761	595.~~218995~~578475	639.~~685299~~724236	~~915~~898.~~253202~~959652
2-B-6				F-30/360	45660NE50	122,881.00	~~974~~904.~~472197~~538127	4.~~466354~~145800	595.~~218994~~578475	639.~~685348~~724275	~~915~~898.~~253202~~959652
2-B-X				F-30/360	45660ND77	1,531,881.00	~~974~~904.~~472196~~538127	1.~~808065~~673792	-	1.~~808065~~673792	~~915~~898.~~253202~~959652
P				-	IN04021P1	100.00	1,000.000000	-	-	-	1,000.000000
A-R				F-30/360	45660NC52	100.00	-	-	-	-	-
							Page 4 of 28				© COPYRIGHT 2004 Deutsche Bank
							Page 4 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Certificate Payment Report for September 27, 2004 Distribution
	Certificate Payment Report for December 27, 2004 Distribution
	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
2-A-1	59,730,000.00		~~478~~735,~~566~~686.6088		1318,~~010~~116,~~395~~171.3149	4,~~231~~980,~~015~~156.9642	1723,~~241~~096,~~411~~327.2791	1723,~~719~~832,~~977~~014.8779	-	-	4236,~~488~~633,~~588~~672.7309
2-A-2	-		12,~~562~~090,~~085~~157.9665		-	-	-	12,~~562~~090,~~085~~157.9665	-	-	-
2-B-1	674,000.00		1826,~~297~~730.8028		2130,~~288~~671.3451	3537,~~831~~429.0068	5768,~~119~~101.3419	7594,~~417~~831.1447	-	-	~~616~~605,~~880~~898.6681
2-B-2	306,000.00		812,~~307~~135.3271		913,~~665~~925.0305	16,~~267~~993.4930	2530,~~932~~918.5235	3443,~~239~~054.8406	-	-	~~280~~275,~~067~~081.4865
2-B-3	214,000.00		58,~~809~~487.6805		69,~~759~~738.2143	11,~~376~~884.6120	1821,~~135~~622.8163	2330,~~945~~109.4968	-	-	~~195~~192,~~864~~377.1937
2-B-4	123,000.00		34,~~339~~878.2107		35,~~884~~597.9632	6,~~538~~830.8964	1012,~~423~~427.8696	1317,~~763~~306.0703	-	-	~~112~~110,~~576~~572.1404
2-B-5	92,000.00		23,~~497~~648.6264		24,~~905~~186.8362	45,~~890~~109.8810	79,~~796~~295.71	1012,~~294~~944.3335	-	-	8482,~~203~~704.29
2-B-6	122,881.00		34,~~335~~873.9835		35,~~881~~591.2191	6,~~532~~824.5703	1012,~~413~~415.7794	1317,~~749~~289.7529	-	-	~~112~~110,~~467~~465.2306
2-B-X	-		1624,~~892~~630.1607		-	-	-	1624,~~892~~630.1607	-	-	-
P	100.00		3,616.63		-	-	-	3,616.63	-	-	100.00
A-R	100.00		0.46		81.64	18.36	100.00	100.46	-	-	-
Total	61,262,081.00		2,~~102~~914,~~749~~844.4279		1318,~~058~~185,~~861~~963.5297	45,~~312~~065,~~471~~245.7673	1723,~~371~~251,~~333~~209.2870	1926,~~474~~166,~~082~~054.7049	-	-	4338,~~890~~010,~~747~~871.7230
	Interest Detail
	Pass-	Prior Principal				Non-	Prior	Unscheduled		Paid or	Current
	Through	(with Notional)			Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid
Class	Rate	Balance			Interest	Interest SF	Interest	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
2-A-1	2.~~16500~~73063%	4538,~~766~~303,~~801~~175.3952			8287,~~570~~159.9483	-	-	-	8287,~~570~~159.9483	8287,~~570~~159.9483	-
2-A-2	54.~~56152~~98988%	4538,~~766~~303,~~801~~175.3952			~~212~~159,~~110~~273.6469	-	-	-	~~212~~159,~~110~~273.6469	~~212~~159,~~110~~273.6469	-
2-B-1	5.50000%	~~656~~609,~~794~~658.2670			32,~~010~~794.3127	-	-	-	32,~~010~~794.3127	32,~~010~~794.3127	-
2-B-2	5.50000%	~~298~~276,~~188~~788.4967			1,~~366~~268.7061	-	-	-	1,~~366~~268.7061	1,~~366~~268.7061	-
2-B-3	5.50000%	~~208~~193,~~537~~571.0516			~~955~~887.7920	-	-	-	~~955~~887.7920	~~955~~887.7920	-
2-B-4	5.50000%	~~119~~111,~~860~~258.0819			~~549~~509.3693	-	-	-	~~549~~509.3693	~~549~~509.3693	-
2-B-5	5.50000%	8983,~~651~~217.4451			~~410~~381.9041	-	-	-	~~410~~381.9041	~~410~~381.9041	-
2-B-6	5.50000%	~~119~~111,~~744~~150.1255			~~548~~509.8344	-	-	-	~~548~~509.8344	~~548~~509.8344	-
2-B-X	2.~~22652~~22051%	1,~~492~~385,~~775~~644.4477			2,~~769~~564.7405	-	-	-	2,~~769~~564.7405	2,~~769~~564.7405	-
P		100.00			-	-	-	-	-	-	-
A-R	5.50000%	-			-	-	-	-	-	-	-
Total		9479,~~519~~377,~~253~~740.6658			~~304~~255,~~293~~348.2143	-	-	-	~~304~~255,~~293~~348.2143	~~304~~255,~~293~~348.2143	-
							Page 5 of 28				© COPYRIGHT 2004 Deutsche Bank
							Page 5 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collection Account Report for September 27, 2004 Distribution
	Collection Account Report for December 27, 2004 Distribution
	Collection Account Report
SUMMARY						GROUP 2	GROUP 1	TOTAL
	Principal Collections					31,~~368~~678,~~929~~048.1199	134,~~947~~485,~~450~~447.8649	176,~~316~~163,~~379~~496.9748
	Principal Withdrawals					0.00	0.00	0.00
	Principal Other Accounts					0.00	0.00	0.00
	TOTAL PRINCIPAL					31,~~368~~678,~~929~~048.1199	134,~~947~~485,~~450~~447.8649	176,~~316~~163,~~379~~496.9748
	Interest Collections					~~306~~257,~~801~~197.7802	1875,~~050,086~~047.8194	1,~~356~~132,~~888~~244.5996
	Interest Withdrawals					0.00	0.00	0.00
	Interest Other Accounts					0.00	0.00	0.00
	Interest Fees					(21,~~508~~848.5759)	(1812,~~698~~909.1790)	(2114,~~206~~758.7449)
	TOTAL INTEREST					~~304~~255,~~293~~348.2143	1862,~~031,388~~138.6404	1,~~335~~117,~~681~~486.8547
	TOTAL AVAILABLE FUNDS TO BONDHOLDERS					31,~~673~~933,~~222~~397.3242	145,~~978~~347,~~839~~585.5053	187,~~652~~280,~~061~~982.8295
	Interest Payable to Bondholders					~~304~~255,~~293~~348.2143	1862,~~031,388~~138.6404	1,~~335~~117,~~681~~486.8547
	Principal Payment Amount Payable to Bondholders					31,~~368~~678,~~929~~048.1199	134,~~947~~485,~~450~~447.8649	176,~~316~~163,~~379~~496.9748
PRINCIPAL - COLLECTIONS						GROUP 2	GROUP 1	TOTAL
	Scheduled Principal					~~259~~244,~~947~~769.7423	~~197~~178,~~152~~954.5230	~~457~~423,~~100~~723.2653
	Curtailments					2434,~~376~~010.5275	3013,~~298~~782.8600	5447,~~675~~792.3875
	Prepayments in Full					~~472~~1,~~572~~399,269.6401	4,~~269~~026,~~158~~682.3690	45,~~741~~425,~~731~~951.0091
	Repurchases/Substitutions					~~2,612,032~~0.2100	9266,~~450,841~~028.1229	12266,~~062,873~~028.3329
	Liquidations					0.00	0.00	0.00
	Insurance Principal					0.00	0.00	0.00
	Other Additional Principal					0.00	0.00	0.00
	LESS: Delinquent Principal					(~~222~~219,~~306~~752.5249)	(~~163~~152,~~590~~069.6175)	(~~385~~371,~~897~~822.1324)
	LESS: Realized Losses					0.00	0.00	0.00
	PLUS: Recoveries					0.00	0.00	0.00
	PLUS: Substitution Shortfall Principal					0.00	0.00	0.00
	PLUS: Principal Loan Adjustments					0.00	0.00	0.00
	PLUS: Principal Advanced					~~222~~219,~~306~~752.5249	~~163~~152,~~590~~069.6175	~~385~~371,~~897~~822.1324
	TOTAL PRINCIPAL					31,~~368~~678,~~929~~048.1199	134,~~947~~485,~~450~~447.8649	176,~~316~~163,~~379~~496.9748
				Page 6 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 6 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collection Account Report for September 27, 2004 Distribution
	Collection Account Report for December 27, 2004 Distribution
	Collection Account Report
PRINCIPAL - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
PRINCIPAL - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL
	Cash Release					0.00	0.00	0.00
	TOTAL PRINCIPAL OTHER ACCOUNTS					0.00	0.00	0.00
INTEREST - COLLECTIONS						GROUP 2	GROUP 1	TOTAL
	Scheduled Interest					~~297~~264,~~716~~385.2765	1910,~~036,497~~239.4131	1,~~334~~174,~~213~~624.6896
	Repurchases/Substitutions					~~17,335~~0.8000	541,~~867~~939.8579	721,~~203~~939.6579
	Liquidations					0.00	0.00	0.00
	Insurance Interest					0.00	0.00	0.00
	Other Additional Interest					0.00	0.00	0.00
	LESS: Prepayment Interest Shortfalls					(~~799~~1,298.7434)	(23,~~658~~004.4749)	(34,~~458~~302.2183)
	LESS: Delinquent Interest					(~~261~~228,~~092~~979.7793)	(~~846~~760,~~229~~671.6858)	(1989,~~107,322~~651.4551)
	LESS: Interest Realized Losses					0.00	0.00	0.00
	PLUS: Compensating Interest					0.00	23,~~658~~004.4749	23,~~658~~004.4749
	LESS: Civil Relief Act Shorfalls					~~799~~1,298.7434	0.00	~~799~~1,298.7434
	PLUS: Substiution Shortfall Interest					0.00	0.00	0.00
	PLUS: Interest Loan Adjustments					0.00	0.00	0.00
	LESS: Excess, Special Hazard, Fraud, & Bankruptcy Interest Losses					0.00	0.00	0.00
	Interest Advanced					~~252~~221,~~842~~791.4830	~~804~~723,~~951~~540.2342	1945,~~057,793~~331.7172
	TOTAL INTEREST					~~306~~257,~~801~~197.7802	1875,~~050,086~~047.8194	1,~~356~~132,~~888~~244.5996
				Page 7 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 7 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collection Account Report for September 27, 2004 Distribution
	Collection Account Report for December 27, 2004 Distribution
	Collection Account Report
INTEREST - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
INTEREST - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL
	Prepayment Penalties					0.00	0.00	0.00
	TOTAL INTEREST OTHER ACCOUNTS					0.00	0.00	0.00
INTEREST - FEES						GROUP 2	GROUP 1	TOTAL
	Current Servicing Fees					1,~~720~~187.9111	117,~~839~~462.7801	138,~~560~~649.6912
	Trustee Fees					~~787~~661.6648	32,~~479~~940.1433	43,~~266~~601.8081
	PMI Fees					0.00	32,~~379~~507.2556	32,~~379~~507.2556
	Required Reserve Account Deposit Amount							0.00
	TOTAL INTEREST FEES					21,~~508~~848.5759	1812,~~698~~909.1790	2114,~~206~~758.7449
				Page 8 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 8 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Credit Enhancement Report for September 27, 2004 Distribution
	Credit Enhancement Report for December 27, 2004 Distribution
	Credit Enhancement Report
ACCOUNTS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
INSURANCE						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
STRUCTURAL FEATURES						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
				Page 9 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 9 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collateral Report for September 27, 2004 Distribution
	Collateral Report for December 27, 2004 Distribution
	Collateral Report
COLLATERAL						GROUP 2	GROUP 1	TOTAL
	Loan Count:
	Original					404	608	1012
	Prior					~~329~~296	~~578~~473	~~907~~769
	Prefunding					-	-	-
	Scheduled Paid Offs					-	~~(23)~~-	-
	Full Voluntary Prepayments					(1110)	(511)	(1621)
	Repurchases					~~(28)~~-	(111)	(391)
	Liquidations					-	-	-
	Current					~~313~~286	~~539~~461	~~852~~747
	Principal Balance:
	Original					61,261,881.66	223,508,055.49	284,769,937.15
	Prior					4739,~~259~~688,~~577~~820.4995	~~208~~176,~~748~~419,~~502~~987.6891	~~256~~216,~~008~~108,~~080~~808.1786
	Prefunding					-	-	-
	Scheduled Principal					(~~259~~244,~~947~~769.7423)	(~~197~~178,~~152~~954.5230)	(~~457~~423,~~100~~723.2653)
	Partial and Full Voluntary Prepayments					(~~496~~1,~~949~~433,279.1676)	(4,~~299~~040,~~457~~464.2290)	(45,~~796~~473,~~406~~744.3866)
	Repurchases					~~(2,612,032.21)~~-	(9266,~~450,841~~028.1229)	(12266,~~062,873~~028.3329)
	Liquidations					-	-	-
	Current					4338,~~890~~010,~~648~~771.3896	~~194~~171,~~801~~934,~~051~~540.8242	~~238~~209,~~691~~945,~~700~~312.2038
PREFUNDING						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
	Group 1
	Group 2
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)
				Page 10 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 10 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collateral Report for September 27, 2004 Distribution
	Collateral Report for December 27, 2004 Distribution
	Collateral Report
CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL
	Weighted Average Coupon Original					7.983576%	6.290179%	6.654475%
	Weighted Average Coupon Prior					8.~~025665~~001927%	6.~~278426~~212047%	6.~~616020~~548555%
	Weighted Average Coupon Current					7.~~999701~~993757%	6.~~273761~~204597%	6.~~592373~~533180%
	Weighted Average Months to Maturity Original					204	355	323
	Weighted Average Months to Maturity Prior					~~202~~193	~~351~~348	~~323~~320
	Weighted Average Months to Maturity Current					~~196~~191	~~351~~347	~~322~~319
	Weighted Avg Remaining Amortization Term Original					~~204~~-	~~355~~-	~~323~~-
	Weighted Avg Remaining Amortization Term Prior					~~201~~192	~~351~~348	~~323~~319
	Weighted Avg Remaining Amortization Term Current					-190	-347	-318
	Weighted Average Seasoning Original					~~93.22~~-	~~4.24~~-	~~22.96~~-
	Weighted Average Seasoning Prior					96101.3364	811.0709	2427.3672
	Weighted Average Seasoning Current					-102.56	-12.09	-28.47
Note: Original information refers to deal issue.
	Group 1
	Group 2
WAC by Groups					Total WAC
WARAT by Groups					Total WARAT
Note: Dates correspond to distribution dates.
				Page 11 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 11 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Collateral Report for September 27, 2004 Distribution
	Collateral Report for December 27, 2004 Distribution
	Collateral Report
ARM CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL
	Weighted Average Margin Original
	Weighted Average Margin Prior
	Weighted Average Margin Current
	Weighted Average Max Rate Original
	Weighted Average Max Rate Prior
	Weighted Average Max Rate Current
	Weighted Average Min Rate Original
	Weighted Average Min Rate Prior
	Weighted Average Min Rate Current
	Weighted Average Cap Up Original
	Weighted Average Cap Up Prior
	Weighted Average Cap Up Current
	Weighted Average Cap Down Original
	Weighted Average Cap Down Prior
	Weighted Average Cap Down Current
Note: Original information refers to deal issue.
SERVICING FEES / ADVANCES						GROUP 2	GROUP 1	TOTAL
	Current Servicing Fees					1,~~720~~187.9111	117,~~839~~462.7801	138,~~560~~649.6912
	Delinquent Servicing Fees					87,~~250~~188.3062	4137,~~278~~131.4516	4944,~~528~~319.7578
	TOTAL SERVICING FEES					98,~~971~~375.2173	5344,~~118~~593.2317	6352,~~089~~968.4490
	Total Servicing Fees					98,~~971~~375.2173	5344,~~118~~593.2317	6352,~~089~~968.4490
	Compensating Interest					(~~799~~1,298.7434)	(23,~~658~~004.4749)	(34,~~458~~302.2183)
	Delinquent Servicing Fees					(87,~~250~~188.3062)	(4137,~~278~~131.4516)	(4944,~~528~~319.7578)
	COLLECTED SERVICING FEES					~~921~~(111.1723)	94,~~181~~457.3152	104,~~102~~346.4829
	Total Advanced Principal For Current Payment Date					~~222~~219,~~306~~752.5249	~~163~~152,~~590~~069.6175	~~385~~371,~~897~~822.1324
	Total Advanced Interest For Current Payment Date					~~252~~221,~~842~~791.4830	~~804~~723,~~951~~540.2342	1945,~~057,793~~331.7172
	TOTAL ADVANCES FOR CURRENT PERIOD					~~475~~441,~~149~~543.0079	~~968~~875,~~541~~610.8417	1,~~443~~317,~~690~~153.8496
ADDITIONAL COLLATERAL INFORMATION						GROUP 2	GROUP 1	TOTAL
	Prepayment Interest Shortfall (PPIS)					~~799~~1,298.7434	23,~~658~~004.4749	34,~~458~~302.2183
	Compensating Interest					(~~799~~1,298.7434)	(23,~~658~~004.4749)	(34,~~458~~302.2183)
	Net Prepayment Interest Shortfall (Net PPIS)					0.00	0.00	0.00
	Weighted Average Net Mortgage Rate							6.~~260811~~205132%
				Page 12 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 12 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Delinquency Report for September 27, 2004 Distribution
	Delinquency Report for December 27, 2004 Distribution
	Delinquency Report - Total
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance		###########	45,~~360~~428,~~634~~139.8445	2,~~049~~767,~~162~~039.9703	1379,~~426,101~~535.0283	78,~~835~~574,~~898~~714.8331
		% Balance		80.1999%	12.8359%	01.8632%	0.6018%	34.2808%
		# Loans		~~662~~589	2330	1013	52	3845
		% # Loans		7778.7085%	24.7002%	1.1774%	0.5927%	46.4602%
FORECLOSURE		Balance		-	1200,~~129,749~~994.2870	-	-1,356,776.45	1,~~129~~557,~~749~~771.2815
		% Balance		0.00%	0.4710%	0.00%	0.0065%	0.4774%
		# Loans		-	31	-	-4	35
		% # Loans		0.00%	0.3513%	0.00%	0.0054%	0.3567%
BANKRUPTCY		Balance		~~667~~353,~~447~~516.0656	33120,~~309~~485.7476	-	-113,061.02	~~700~~587,~~756~~063.8034
		% Balance		0.2817%	0.0106%	0.00%	0.0005%	0.2928%
		# Loans		32	12	-	-1	45
		% # Loans		0.3527%	0.1227%	0.00%	0.0013%	0.4767%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~667~~353,~~447~~516.0656	5,~~523~~749,~~693~~619.8691	2,~~049~~767,~~162~~039.9703	1,~~426~~849,~~101~~373.0230	910,~~666~~719,~~404~~548.9180
		% Balance		0.2817%	2.3174%	01.8632%	0.6088%	45.0511%
		# Loans		32	2733	1013	57	4555
		% # Loans		0.3527%	34.1742%	1.1774%	0.5994%	57.2836%
Note: <1 Payment = 1-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 13 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 13 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Delinquency Report for September 27, 2004 Distribution
	Delinquency Report for December 27, 2004 Distribution
	Delinquency Report - Group 1 Group
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance		###########	12,~~914~~385,~~310~~461.6074	12,~~292~~175,~~624~~134.4640	~~823,318.77~~-	4,~~030~~560,~~253~~596.8314
		% Balance		8081.7287%	01.9839%	01.6627%	0.4200%	2.0765%
		# Loans		~~424~~375	87	36	2-	13
		% # Loans		7881.6634%	1.4852%	01.5630%	0.3700%	2.4182%
FORECLOSURE		Balance		-	~~660,412.96~~-	-	-1,082,869.71	~~660~~1,~~412~~082,869.9671
		% Balance		0.00%	0.3400%	0.00%	0.0063%	0.3463%
		# Loans		-	1-	-	-2	12
		% # Loans		0.00%	0.1900%	0.00%	0.0043%	0.1943%
BANKRUPTCY		Balance		~~232~~231,~~482~~770.3336	-	-	-113,061.02	~~232~~344,~~482~~831.3338
		% Balance		0.1213%	0.00%	0.00%	0.0007%	0.1220%
		# Loans		1	-	-	-1	12
		% # Loans		0.1922%	0.00%	0.00%	0.0022%	0.1943%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~232~~231,~~482~~770.3336	2,~~574~~385,~~723~~461.5674	12,~~292~~175,~~624~~134.4640	~~823~~1,~~318~~195,930.7773	45,~~923~~988,~~149~~297.1223
		% Balance		0.1213%	1.3239%	01.6627%	0.4270%	23.5348%
		# Loans		1	97	36	23	1517
		% # Loans		0.1922%	1.6752%	01.5630%	0.3765%	23.7869%
Note: <1 Payment = 1-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 14 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 14 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Delinquency Report for September 27, 2004 Distribution
	Delinquency Report for December 27, 2004 Distribution
	Delinquency Report - Group 2 Group
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance		3429,~~157~~269,~~023~~597.7131	23,~~446~~042,~~324~~677.2471	~~756~~591,~~538~~904.5163	~~602~~379,~~782~~535.2583	34,~~805~~014,~~645~~118.0017
		% Balance		77.8200%	58.5700%	1.7256%	1.3700%	810.6756%
		# Loans		~~238~~214	1523	7	32	2532
		% # Loans		7674.0483%	48.7904%	2.2445%	0.9670%	711.9919%
FORECLOSURE		Balance		-	~~469~~200,~~336~~994.3270	-	-273,906.74	~~469~~474,~~336~~901.3244
		% Balance		0.00%	10.0753%	0.00%	0.0072%	1.0725%
		# Loans		-	21	-	-2	23
		% # Loans		0.00%	0.6435%	0.00%	0.0070%	01.6405%
BANKRUPTCY		Balance		~~434~~121,~~964~~746.7320	33120,~~309~~485.7476	-	-	~~468~~242,~~274~~231.4796
		% Balance		0.9932%	0.0832%	0.00%	0.00%	10.0764%
		# Loans		21	12	-	-	3
		% # Loans		0.6435%	0.3270%	0.00%	0.00%	01.9605%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~434~~121,~~964~~746.7320	23,~~948~~364,~~970~~158.3017	~~756~~591,~~538~~904.5163	~~602~~653,~~782~~442.2557	4,~~743~~731,~~255~~251.7957
		% Balance		0.9932%	68.7285%	1.7256%	1.3772%	1012.8145%
		# Loans		21	1826	7	34	3038
		% # Loans		0.6435%	59.7509%	2.2445%	01.9640%	913.5829%
Note: <1 Payment = 1-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 15 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 15 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	REO Report for September 27, 2004 Distribution
	REO Report for December 27, 2004 Distribution
	REO Report - Mortgage Loans that Become REO During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 0				Loan Group 1 = Group 1; REO Book Value = 000.00
Total Original Principal Balance = 000.00				Loan Group 2 = Group 2; REO Book Value = 000.00
Total Current Balance = 000.00
REO Book Value = 000.00
REO Book Value reported corresponds to total REO loans, including loans that become REO during current distribution.
Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK
				Page 16 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 16 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Prepayment Report for September 27, 2004 Distribution
	Prepayment Report for December 27, 2004 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENTS						GROUP 2	GROUP 1	TOTAL
	Current
	Number of Paid in Full Loans					1110	511	1621
	Number of Repurchased Loans					28-	111	391
	Total Number of Loans Prepaid in Full					3910	1612	5522
	Paid in Full Balance					~~472~~1,~~572~~399,269.6401	4,~~269~~026,~~158~~682.3690	45,~~741~~425,~~731~~951.0091
	Repurchased Loans Balance					~~2,612,032.21~~-	9266,~~450,841~~028.1229	12266,~~062,873~~028.3329
	Curtailments Amount					2434,~~376~~010.5275	3013,~~298~~782.8600	5447,~~675~~792.3875
	Total Prepayment Amount					31,~~108~~433,~~981~~279.3776	134,~~750~~306,~~298~~493.3419	165,~~859~~739,~~279~~772.7195
	Cumulative
	Number of Paid in Full Loans					86105	3495	~~120~~200
	Number of Repurchased Loans					28	1237	4065
	Total Number of Loans Prepaid in Full					~~114~~133	46132	~~160~~265
	Paid in Full Balance					1217,~~902~~948,~~324~~885.3147	1735,~~497~~395,~~123~~199.2268	3053,~~399~~344,~~447~~085.5315
	Repurchased Loans Balance					2,612,032.21	914,~~815~~190,~~841~~060.1263	1216,~~427~~802,~~873~~092.3384
	Curtailments Amount					~~156~~236,~~455~~996.5786	~~135~~180,~~617~~150.3309	~~292~~417,~~072~~146.9095
	Total Prepayment Amount					1520,~~670~~797,~~812~~914.0954	2749,~~448~~765,~~581~~410.6740	4370,~~119~~563,~~393~~324.7694
SPACE INTENTIONALLY LEFT BLANK
Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)
				Page 17 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 17 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Prepayment Report for September 27, 2004 Distribution
	Prepayment Report for December 27, 2004 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENT RATES						GROUP 2	GROUP 1	TOTAL
	SMM					63.6163%	62.5944%	62.6066%
	3 Months Avg SMM					54.7011%	23.8998%	34.4400%
	12 Months Avg SMM
	Avg SMM Since Cut-off					4.9164%	2.1778%	23.7215%
	CPR					5635.0186%	5525.8969%	5527.9165%
	3 Months Avg CPR					5039.5856%	2938.6759%	3438.2776%
	12 Months Avg CPR
	Avg CPR Since Cut-off					4543.3548%	2328.1568%	2831.1990%
	PSA					~~933~~597.5473%	~~931~~1062.5056%	~~931~~485.8766%
	3 Months Avg PSA Approximation					~~842~~659.9929%	~~985~~1740.7890%	~~655~~699.8914%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation					~~755~~724.7869%	~~1144~~605.7627%	~~570~~545.7248%
	Group 1
	Group 2
CPR by Groups					Total CPR
PSA by Groups					Total PSA
				Page 18 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 18 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Prepayment Report for September 27, 2004 Distribution
	Prepayment Report for December 27, 2004 Distribution
	Prepayment Report - Voluntary Prepayments
	Group 1
	Group 2
CPR Avg since Cut-Off by Groups					Total CPR Avg since Cut-Off
PSA Avg since Cut-Off by Groups					Total PSA Avg since Cut-Off
PREPAYMENT CALCULATION METHODOLOGY
Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases)/(Beg Principal Balance - Sched Principal)
Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)
PSA Standard Prepayment Model: CPR/(0.02*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 and repurchases.
Dates correspond to distribution dates.
				Page 19 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 19 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for September 27, 2004 Distribution
	Prepayment Detail Report for December 27, 2004 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 55						Loan Group 1 = Group 1
Total Loan Count = 22						Loan Group 1 = Group 1
Total Original Principal Balance = 17,246,098.00						Loan Group 2 = Group 2
Total Original Principal Balance = 6,625,300.00						Loan Group 2 = Group 2
Total Prepayment Amount = 16,804,604.33
Total Prepayment Amount = 5,691,980.20
Loan Number			Original			Current	State &	Type Prepayment
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	&	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Original Term	Date
266027 1			80,000.00	73,694.94	Aug-12-04	8.250%	GA - 80.00%	Paid Off - 360	Sep-30-97
1471350 1			425,000.00	413,041.78	Nov-22-04	6.375%	TN - 61.06%	Paid Off - 360	Apr-12-02
1461230 1			389,480.00	378,861.29	Sep-02-04	6.375%	CA - 64.91%	Paid Off - 360	Feb-12-02
2902871 1			136,000.00	134,580.47	Dec-08-04	7.500%	MD - 81.93%	Paid Off - 360	Sep-29-03
2156111 1			636,000.00	607,070.20	Sep-02-04	5.125%	CA - 41.03%	Paid Off - 360	Jul-28-03
2932271 1			400,000.00	395,257.21	Nov-29-04	6.625%	CA - 72.07%	Paid Off - 360	Sep-02-03
2630010 1			181,800.00	179,695.06	Aug-31-04	6.750%	NY - 90.00%	Paid Off - 360	Jun-06-03
3371415 1			322,700.00	319,608.96	Nov-30-04	5.750%	MN - 93.54%	Paid Off - 360	Feb-25-04
3157403 1			350,000.00	346,114.50	Aug-24-04	6.250%	MA - 24.95%	Paid Off - 360	Aug-15-03
3417492 1			364,000.00	360,635.16	Nov-30-04	6.000%	CA - 80.00%	Paid Off - 360	Feb-25-04
3157590 1			399,960.00	397,054.85	Aug-24-04	6.625%	NJ - 80.00%	Paid Off - 360	Nov-12-03
3443877 1			120,000.00	119,136.50	Nov-16-04	6.625%	CA - 33.80%	Paid Off - 360	Feb-24-04
3157608 1			491,050.00	487,815.09	Sep-10-04	6.375%	DC - 72.15%	Paid Off - 360	Dec-23-03
3447257 1			360,000.00	357,531.40	Nov-24-04	6.875%	MD - 80.00%	Paid Off - 360	Mar-05-04
3157687 1			639,500.00	635,007.56	Aug-27-04	6.750%	WA - 79.94%	Paid Off - 360	Nov-06-03
3450029 1			403,750.00	400,742.77	Dec-01-04	7.625%	FL - 85.00%	Paid Off - 360	Feb-11-04
3158281 1			342,000.00	340,027.41	Aug-24-04	6.250%	CA - 61.62%	Paid Off - 360	Jan-26-04
3462753 1			504,000.00	500,010.40	Dec-07-04	6.125%	MD - 70.00%	Paid Off - 360	Feb-24-04
3210721 1			580,000.00	577,220.76	Aug-26-04	8.000%	CA - 80.00%	Paid Off - 360	Dec-22-03
3474564 1			671,200.00	662,391.60	Nov-19-04	6.000%	CA - 75.00%	Paid Off - 360	Mar-19-04
3482592 1			248,000.00	246,596.70	Sep-02-04	6.350%	NY - 41.33%	Paid Off - 360	Feb-20-04
3561331 1			369,950.00	363,746.65	Nov-29-04	5.875%	AZ - 68.26%	Paid Off - 360	Mar-18-04
87922 2			17,200.00	213.23	Aug-27-04	9.125%	PR - 30.71%	Paid Off - 120	Nov-14-94
20212 2			330,000.00	1,334.77	Dec-01-04	7.500%	CA - 62.26%	Paid Off - 360	Sep-22-93
310311 2			412,500.00	392,817.90	Aug-24-04	9.875%	FL - 75.00%	Paid Off - 360	Mar-27-98
39376 2			345,000.00	288,406.14	Dec-08-04	7.000%	MN - 52.27%	Paid Off - 360	Dec-29-93
310877 2			49,000.00	44,725.45	Sep-14-04	8.000%	NY - 89.09%	Paid Off - 360	Sep-17-98
59055 2			387,500.00	45,428.09	Nov-18-04	7.000%	CA - 60.55%	Paid Off - 180	May-16-94
478707 2			30,000.00	480.46	Aug-30-04	7.875%	NY - 57.14%	Paid Off - 360	Jun-14-99
143141 2		BK	345,000.00	311,860.16	Nov-30-04	8.875%	CA - 75.00%	Paid Off - 360	Dec-08-95
666117 2			36,000.00	34,335.60	Aug-24-04	9.875%	NY - 80.00%	Paid Off - 360	Jun-13-00
156699 2			324,000.00	286,254.35	Nov-17-04	8.400%	CA - 80.00%	Paid Off - 360	Feb-05-96
2844604 1			109,540.00	108,571.07	Sep-01-04	7.250%	NC - 93.62%	Repur/Subs - 360	Aug-25-03
212528 2			50,000.00	31,585.96	Dec-07-04	8.250%	NY - 19.23%	Paid Off - 180	Feb-25-97
2904887 1			375,000.00	372,701.45	Sep-01-04	6.750%	IN - 77.32%	Repur/Subs - 360	Jan-13-04
248735 2			55,200.00	32,315.71	Dec-13-04	8.625%	AZ - 64.94%	Paid Off - 180	Jun-11-97
3138953 1			159,000.00	158,087.70	Sep-01-04	6.875%	NY - 40.77%	Repur/Subs - 360	Feb-03-04
319617 2			56,000.00	38,414.04	Nov-22-04	7.500%	CA - 80.00%	Paid Off - 180	Mar-27-98
3153616 1			275,000.00	272,363.38	Sep-01-04	8.000%	NY - 73.33%	Repur/Subs - 360	Jul-23-03
350055 2			50,500.00	47,077.21	Nov-18-04	8.250%	NY - 73.19%	Paid Off - 360	Sep-14-98
3154148 1			367,500.00	363,538.23	Sep-01-04	6.875%	CA - 75.00%	Repur/Subs - 360	Sep-02-03
468697 2			337,500.00	316,592.58	Dec-07-04	7.375%	CA - 75.00%	Paid Off - 360	Apr-23-99
3154846 1			193,000.00	191,645.27	Sep-01-04	7.375%	WI - 89.77%	Repur/Subs - 360	Nov-26-03
3281721 1			268,000.00	266,028.29	Nov-19-04	8.750%	NY - 94.96%	Repur/Subs - 360	Dec-31-03
3156736 1			450,000.00	446,683.22	Aug-16-04	7.125%	NY - 90.00%	Repur/Subs - 360	Oct-14-03
					Page 20 of 27				© COPYRIGHT 2004 Deutsche Bank
3157022 1			125,000.00	124,270.08	Sep-01-04	7.000%	ME - 38.70%	Repur/Subs - 360	Dec-11-03
3157032 1			105,000.00	104,215.17	Sep-01-04	6.750%	NH - 57.38%	Repur/Subs - 360	Dec-11-03
3157502 1			584,000.00	578,368.03	Sep-01-04	7.000%	NM - 77.87%	Repur/Subs - 360	Oct-22-03
3157565 1			486,000.00	482,585.84	Sep-01-04	6.750%	CO - 73.64%	Repur/Subs - 360	Nov-12-03
3157862 1			420,000.00	417,578.06	Sep-01-04	7.125%	MA - 64.62%	Repur/Subs - 360	Dec-30-03
3158493 1			407,880.00	405,774.09	Sep-01-04	6.875%	NY - 80.00%	Repur/Subs - 360	Jan-21-04
3206581 1			147,828.00	146,642.90	Sep-01-04	7.250%	CA - 80.17%	Repur/Subs - 360	Nov-26-03
3273111 1			240,000.00	238,742.59	Sep-01-04	6.750%	CA - 53.93%	Repur/Subs - 360	Feb-18-04
3284644 1			382,000.00	380,415.45	Sep-01-04	7.000%	CA - 80.00%	Repur/Subs - 360	Feb-26-04
3298400 1			235,000.00	234,049.14	Sep-01-04	7.125%	CA - 58.75%	Repur/Subs - 360	Feb-26-04
3324413 1			398,000.00	396,308.88	Sep-01-04	6.875%	CA - 71.07%	Repur/Subs - 360	Feb-25-04
3342440 1			408,750.00	407,013.20	Sep-01-04	6.875%	NY - 75.00%	Repur/Subs - 360	Feb-24-04
3355150 1			431,150.00	429,530.02	Sep-01-04	7.500%	GA - 78.97%	Repur/Subs - 360	Feb-23-04
3387446 1			365,000.00	363,410.95	Sep-01-04	6.750%	MA - 64.60%	Repur/Subs - 360	Feb-19-04
3402907 1			230,000.00	228,484.70	Sep-01-04	6.750%	CA - 53.49%	Repur/Subs - 360	Feb-13-04
3460587 1			436,720.00	434,818.68	Sep-01-04	6.750%	GA - 80.00%	Repur/Subs - 360	Feb-27-04
3461280 1			400,000.00	398,644.20	Sep-01-04	6.875%	CA - 69.57%	Repur/Subs - 360	Mar-11-04
3461879 1			416,000.00	414,232.43	Sep-01-04	6.875%	CA - 80.00%	Repur/Subs - 360	Mar-04-04
3482926 1			650,000.00	646,234.96	Sep-01-04	6.875%	CA - 74.88%	Repur/Subs - 360	Feb-27-04
3501780 1			480,000.00	478,332.93	Sep-01-04	6.750%	CA - 45.28%	Repur/Subs - 360	Mar-15-04
3525796 1			228,740.00	227,598.50	Sep-01-04	7.000%	CA - 59.88%	Repur/Subs - 360	Feb-27-04
					Page 20 of 28				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for September 27, 2004 Distribution
	Realized Loss Report for December 27, 2004 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date
271567 2			328,500.00	304,671.64	Sep-01-04	8.125%	AZ - 90.00%	Repur/Subs - 360	Sep-22-97
277144 2			134,750.00	118,096.86	Sep-01-04	9.250%	NY - 70.00%	Repur/Subs - 360	Feb-26-98
307673 2			345,000.00	320,189.11	Sep-01-04	7.500%	CA - 73.40%	Repur/Subs - 360	Apr-14-98
313196 2			360,000.00	335,000.42	Sep-01-04	7.750%	UT - 80.00%	Repur/Subs - 360	Apr-20-98
349000 2			150,000.00	108,903.06	Sep-01-04	8.375%	NY - 75.00%	Repur/Subs - 360	Aug-31-98
353041 2			123,750.00	114,529.53	Sep-01-04	8.250%	CA - 75.00%	Repur/Subs - 360	Jul-10-98
354546 2			340,000.00	298,464.45	Sep-01-04	7.375%	CA - 80.00%	Repur/Subs - 360	Jul-01-98
354607 2			115,500.00	109,481.93	Sep-01-04	8.875%	NY - 70.00%	Repur/Subs - 360	Sep-17-98
396245 2			325,000.00	304,656.70	Sep-01-04	8.000%	CA - 73.86%	Repur/Subs - 360	Aug-25-98
419118 2			336,000.00	312,905.07	Sep-01-04	7.500%	TX - 80.00%	Repur/Subs - 360	Oct-26-98
481839 2			299,000.00	285,133.44	Sep-01-04	8.500%	NY - 66.59%	Repur/Subs - 360	Jul-13-99
					Page 21 of 28				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Realized Loss Report for September 27, 2004 Distribution
	Realized Loss Report - Collateral
COLLATERAL REALIZED LOSSES						GROUP 2	GROUP 1	TOTAL
	Current
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-
	Cumulative
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-
	Note: Collateral Realized Loss Amount may include adjustments to loans liquidated in prior periods.
	Current Realized Losses					0.00	0.00	0.00
	Supplemental Losses (Recoveries)					0.00	0.00	0.00
	Current Net Realized Losses (Recoveries)					0.00	0.00	0.00
	Prior Cumulative Realized Loss					0.00	0.00	0.00
	Current Net Realized Loss (Recoveries)					0.00	0.00	0.00
	Current Cumulative Realized Loss					0.00	0.00	0.00
	Current Special Hazard Loss Coverage Amount					1,~~210~~192,~~535~~246.3426	2,511,341.00	3,~~721~~703,~~876~~587.3426
	Current Fraud Loss Coverage Amount					600,000.00	2,250,000.00	2,850,000.00
	Current Bankruptcy Loss Coverage Amount					100,000.00	100,000.00	200,000.00
	Class 1-B-1 Write Down Amount							0.00
	Class 1-B-2 Write Down Amount							0.00
	Class 1-B-3 Write Down Amount							0.00
	Class 1-B-4 Write Down Amount							0.00
	Class 1-B-5 Write Down Amount							0.00
	Class1-B-6 Write Down Amount							0.00
	Class 2-B-1 Write Down Amount							0.00
	Class 2-B-2 Write Down Amount							0.00
	Class 2-B-3 Write Down Amount							0.00
	Class 2-B-4 Write Down Amount							0.00
	Group 1						3 Months Moving Average
	Group 2
Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation
				Page 22 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 21 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Realized Loss Report for September 27, 2004 Distribution
	Realized Loss Report for December 27, 2004 Distribution
	Realized Loss Report - Collateral
DEFAULT SPEEDS						GROUP 2	GROUP 1	TOTAL
	MDR					0.00%	0.00%	0.00%
	3 Months Avg MDR					0.00%	0.00%	0.00%
	12 Months Avg MDR
	Avg MDR Since Cut-off					0.00%	0.00%	0.00%
	CDR					0.00%	0.00%	0.00%
	3 Months Avg CDR					0.00%	0.00%	0.00%
	12 Months Avg CDR
	Avg CDR Since Cut-off					0.00%	0.00%	0.00%
	SDA					0.00%	0.00%	0.00%
	3 Months Avg SDA Approximation					0.00%	0.00%	0.00%
	12 Months Avg SDA Approximation
	Avg SDA Since Cut-off Approximation					0.00%	0.00%	0.00%
	Loss Severity Approximation for Current Period
	3 Months Avg Loss Severity Approximation
	12 Months Avg Loss Severity Approximation
	Avg Loss Severity Approximation Since Cut-off
	Group 1
	Group 2
CDR by Groups					Total CDR
SDA by Groups					Total SDA
				Page 23 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 22 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Realized Loss Report for September 27, 2004 Distribution
	Realized Loss Report for December 27, 2004 Distribution
	Realized Loss Report - Collateral
	Group 1
	Group 2
CDR Avg since Cut-Off by Groups					Total CDR Avg since Cut-Off
SDA Avg since Cut-Off by Groups					Total SDA Avg since Cut-Off
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 24 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 23 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Realized Loss Detail Report for September 27, 2004 Distribution
	Realized Loss Detail Report for December 27, 2004 Distribution
	Realized Loss Detail Report - Loans Liquidated During Current Distribution
SUMMARY							LOAN GROUP
Total Loan Count Current Losses = 0
Total Loan Count Revisions = 0						Loan Group 1 = Group 1
Total Prior Principal Balance = 0.00						Loan Group 2 = Group 2
Total Current Realized Loss Amount = 0.00
Total Revisions Amount = 0.00
Total Realized Loss Amount = 0.00
Total Net Liquidation Proceeds = 0.00
Note: Total Realized Loss Amount may include adjustments to loans liquidated in prior periods.
Loan Number			Current	State &		Prior	Realized		Cumulative
&		Loan	Note	LTV at	Original	Principal	Loss/(Gain)	Realized	Realized
Loan Group		Status	Rate	Origination	Term	Balance	Revisions	Loss/(Gain)	Loss/(Gain)
SPACE INTENTIONALLY LEFT BLANK
					Page 25 of 28				© COPYRIGHT 2004 Deutsche Bank
					Page 24 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Triggers, Adj. Rate Cert. and Miscellaneous Report for September 27, 2004 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report for December 27, 2004 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report
TRIGGER EVENTS						GROUP 2	GROUP 1	TOTAL
	Has the Optional Termination Date been reached?							No
	Have the Sr. Prepay Step Down Cond been satisfied?					No	No
	Has the Sr. Credit Supp. Depletion Date been reached?					No	No
	Has the Spec. Haz. Coverage Term Date been reached?					No	No
	Has the Fraud LossCoverage Term. Date been reached?					No	No
	Has the Bank LossCoverage Term. Date been reached?					No	No
ADJUSTABLE RATE CERTIFICATE INFORMATION						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
ADDITIONAL INFORMATION						GROUP 2	GROUP 1	TOTAL
	Current Senior Percentage					96.~~841327~~508728%	9594.~~191438~~705048%
	Next Senior Percentage					96.~~805563~~377082%	9594.~~086609~~580054%
	Current Subordinate Percentage					3.~~158673~~491272%	45.~~808562~~294952%
	Next Subordinate Percentage					3.~~194437~~622918%	45.~~913391~~419946%
	Current Senior Prepayment Percentage					100.000000%	100.000000%
	Current Subordinated Prepayment Percentage					0.000000%	0.000000%
	Next Projected Pass-Through Rate for Class 1-A-3							2.~~015000~~580630%
	Next Projected Pass-Through Rate for Class 1-A-4							5.~~985000~~419370%
	Next Projected Pass-Through Rate for Class 2-A-1							2.~~165000~~730630%
	Next Projected Pass-Through Rate for Class 2-A-2							54.~~547830~~996456%
	Next Projected Pass-Through Rate for Class 1-A-X							0.~~514442~~487752%
	Next Projected Pass-Through Rate for Class 2-B-X							2.~~212830~~227086%
	Next Projected Pass-Through Rate for all other classes							5.500000%
				Page 26 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 25 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Other Related Information for September 27, 2004 Distribution
	Other Related Information for December 27, 2004 Distribution
	Other Related Information
ADDITIONAL INFORMATION						GROUP 2	GROUP 1	TOTAL
	Scheduled Principal
	1 Month Prior							~~457~~423,~~100~~723.2653
	2 Months Prior							~~472~~433,~~601~~544.7820
	3 Months Prior							~~486~~445,~~036~~188.0091
	4 Months Prior							~~496~~457,~~472~~100.6526
	5 Months Prior							~~510~~472,~~195~~601.4478
	6 Months Prior							~~536~~486,~~437~~036.0600
	7 Months Prior							0496,472.0065
	8 Months Prior							0510,195.0044
	9 Months Prior							0536,437.0006
	10 Months Prior							0.00
	11 Months Prior							0.00
	12 Months Prior							0.00
	Scheduled Principal on 60+ Day Delinquent Loans
	1 Month Prior							3,~~722~~824.2177
	2 Months Prior							52,~~792~~922.7032
	3 Months Prior							36,~~863~~043.4282
	4 Months Prior							23,~~693~~722.2321
	5 Months Prior							35,~~350~~792.4470
	6 Months Prior							03,863.0042
	7 Months Prior							02,693.0023
	8 Months Prior							03,350.0044
	9 Months Prior							0.00
	10 Months Prior							0.00
	11 Months Prior							0.00
	12 Months Prior							0.00
				Page 27 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 26 of 27				© COPYRIGHT 2004 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2004-A2
	Mortgage Pass-Through Certificates
	Additional Certificate Report for September 27, 2004 Distribution
	Additional Certificate Report for December 27, 2004 Distribution
	Additional Certificate Report
	CLASS				Net PPIS & Relief Act Shortfall Allocation	Unpaid Interest Amount Due	Unpaid Interest Paid	Remaining Unpaid Interest Amount
	1-A-1				0.00	0.00	0.00	0.00
	1-A-2				0.00	0.00	0.00	0.00
	1-A-3				0.00	0.00	0.00	0.00
	1-A-4				0.00	0.00	0.00	0.00
	1-A-5				0.00	0.00	0.00	0.00
	1-A-6				0.00	0.00	0.00	0.00
	1-A-7				0.00	0.00	0.00	0.00
	1-A-8				0.00	0.00	0.00	0.00
	1-A-9				0.00	0.00	0.00	0.00
	P				0.00	0.00	0.00	0.00
	A-R				0.00	0.00	0.00	0.00
	1-PO				0.00	0.00	0.00	0.00
	1-B-1				0.00	0.00	0.00	0.00
	1-B-2				0.00	0.00	0.00	0.00
	1-B-3				0.00	0.00	0.00	0.00
	1-B-4				0.00	0.00	0.00	0.00
	1-B-5				0.00	0.00	0.00	0.00
	1-B-6				0.00	0.00	0.00	0.00
				Page 28 of 28				© COPYRIGHT 2004 Deutsche Bank
				Page 27 of 27				© COPYRIGHT 2004 Deutsche Bank

Filing Compare · INDYMAC MBS INC RESIDENTIAL ASSET SEC TRUST 2004 A2