

                           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)

            Impac Secured Asset Corporation (as Depositor under the Pooling
          and Servicing Agreement, dated as February 1, 2004, providing for the
            issuance of Mortgage Pass-Through Certificates, Series 2004-1)
                   (Exact name of registrant as specified in charter)

                                       California
                    (State or Other Jurisdiction of Incorporation)

               333-85310-03                          33-0715871
          (Commission File Number)        (I.R.S. Employer Identification No.)


          1401 DOVE STREET
          NEWPORT BEACH, CALIFORNIA                    92660
          (Address of principal executive offices)     (Zip Code)


          Registrant's Telephone Number, Including Area Code:  (949) 475-3600


       (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
                                  Indenture Agreement on behalf of Impac
                                  Assets Corporation Inc., Registrant


          Date:  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 December 27, 2004.


	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates


	December 27, 2004 Distribution


	Contents



			TABLE OF CONTENTS

								Page

			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				8
			4.	Credit Enhancement Report				11
			5.	Collateral Report				12
			6.	Delinquency Report				15
			7.	REO Report				16
			8.	Prepayment Report				17
			9.	Prepayment Detail Report				20
			10.	Realized Loss Report				21
			11.	Realized Loss Detail Report				24
			12.	Triggers, Adj. Rate Cert. and Miscellaneous Report				25
			13.	Additional Certificate Report				26




				Total Number of Pages				26



			CONTACTS

				Administrator:
				Direct Phone Number:
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705

				Web Site: https://www.tss.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000



ISSUANCE INFORMATION

	Seller:		Impac Funding Corp.					Cut-Off Date: February 1, 2004
	Certificate Insurer(s):							Closing Date: February 27, 2004
								First Payment Date: March 25, 2004
	Servicer(s):		Impac Funding Corp. Master Servicer
			Countrywide Home Loans Serv Sub-Servicer
			GMAC Sub-Servicer
								Distribution Date: December 27, 2004
	Underwriter(s):		Deutsche Bank Securities Underwriter					Record Date: November 30, 2004







						Page 1 of 26					© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC 3
	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)

A-1	FLT,AS	76,773,000.00			39,428,245.45	79,108.39	6,357,643.79	6,436,752.18	-	-	33,070,601.66
A-2	AFC,SEQ,AS	26,403,000.00			26,403,000.00	66,667.58	-	66,667.58	-	-	26,403,000.00
A-3	AFC,SEQ,AS	39,263,000.00			39,263,000.00	121,388.11	-	121,388.11	-	-	39,263,000.00
A-4	AFC,SEQ,AS	30,619,000.00			30,619,000.00	123,751.79	-	123,751.79	-	-	30,619,000.00
A-5	STEP,AFC,SE	19,107,000.00			19,107,000.00	89,325.23	-	89,325.23	-	-	19,107,000.00
A-6	STEP,AFC,SE	23,000,000.00			23,000,000.00	88,933.33	-	88,933.33	-	-	23,000,000.00
A-IO	IO,NTL,DRB	-			-	86,250.00	-	86,250.00	-	-	-
M-1	MEZ,STEP,AF	5,980,000.00			5,980,000.00	25,165.83	-	25,165.83	-	-	5,980,000.00
M-2	MEZ,STEP,AF	4,600,000.00			4,600,000.00	21,275.00	-	21,275.00	-	-	4,600,000.00
M-3	MEZ,STEP,AF	3,450,000.00			3,450,000.00	17,250.00	-	17,250.00	-	-	3,450,000.00
C	SUB	805,640.00			805,002.29	346,820.99	0.01	346,821.00	-	-	805,002.28
P	SUB	100.00			100.00	82,566.64	-	82,566.64	-	-	100.00
R	R	-			-	-	-	-	-	-	-


Total		230,000,740.00			192,655,347.74	1,148,502.89	6,357,643.80	7,506,146.69	-	-	186,297,703.94


	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)

A-1	02/27/04	12/26/04		A-Act/360	45254TNT7	76,773,000.00	513.569164	1.030419	82.810933	83.841353	430.758231
A-2	02/27/04	12/26/04		A-30/360	45254TNU4	26,403,000.00	1,000.000000	2.525000	-	2.525000	1,000.000000
A-3	02/27/04	12/26/04		A-30/360	45254TNV2	39,263,000.00	1,000.000000	3.091667	-	3.091667	1,000.000000
A-4	02/27/04	12/26/04		A-30/360	45254TNW0	30,619,000.00	1,000.000000	4.041667	-	4.041667	1,000.000000
A-5	02/27/04	12/26/04		A-30/360	45254TNX8	19,107,000.00	1,000.000000	4.675000	-	4.675000	1,000.000000
A-6	02/27/04	12/26/04		A-30/360	45254TNY6	23,000,000.00	1,000.000000	3.866667	-	3.866667	1,000.000000
A-IO	02/27/04	12/26/04		A-30/360	45254TNZ3	28,700,000.00	801.393728	3.005226	-	3.005226	801.393728
M-1	02/27/04	12/26/04		A-30/360	45254TPA6	5,980,000.00	1,000.000000	4.208333	-	4.208333	1,000.000000
M-2	02/27/04	12/26/04		A-30/360	45254TPB4	4,600,000.00	1,000.000000	4.625000	-	4.625000	1,000.000000
M-3	02/27/04	12/26/04		A-30/360	45254TPC2	3,450,000.00	1,000.000000	5.000000	-	5.000000	1,000.000000
C	02/27/04	12/26/04		A-30/360	45254TPD0	805,640.00	999.208443	430.491274	0.000012	430.491286	999.208431
P	02/27/04	12/26/04		A-30/360	45254TPE8	100.00	1,000.000000	825,666.400000	-	825,666.400000	1,000.000000
R	02/27/04	12/26/04		A-30/360	45254TPF5	-	-	-	-	-	-


							Page 2 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC 3
	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)

A-1	76,773,000.00		798,494.47		41,643,519.22	2,058,879.12	43,702,398.34	44,500,892.81	-	-	33,070,601.66
A-2	26,403,000.00		666,675.80		-	-	-	666,675.80	-	-	26,403,000.00
A-3	39,263,000.00		1,213,881.10		-	-	-	1,213,881.10	-	-	39,263,000.00
A-4	30,619,000.00		1,237,517.90		-	-	-	1,237,517.90	-	-	30,619,000.00
A-5	19,107,000.00		893,252.30		-	-	-	893,252.30	-	-	19,107,000.00
A-6	23,000,000.00		889,333.30		-	-	-	889,333.30	-	-	23,000,000.00
A-IO	-		990,750.00		-	-	-	990,750.00	-	-	-
M-1	5,980,000.00		251,658.30		-	-	-	251,658.30	-	-	5,980,000.00
M-2	4,600,000.00		212,750.00		-	-	-	212,750.00	-	-	4,600,000.00
M-3	3,450,000.00		172,500.00		-	-	-	172,500.00	-	-	3,450,000.00
C	805,640.00		4,575,164.78		444.57	193.15	637.72	4,575,802.50	-	-	805,002.28
P	100.00		371,746.40		-	-	-	371,746.40	-	-	100.00
R	-		-		-	-	-	-	-	-	-


Total	230,000,740.00		12,273,724.35		41,643,963.79	2,059,072.27	43,703,036.06	55,976,760.41	-	-	186,297,703.94


	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)

A-1	2.33000%	39,428,245.45			79,108.39	-	-	-	79,108.39	79,108.39	-
A-2	3.03000%	26,403,000.00			66,667.58	-	-	-	66,667.58	66,667.58	-
A-3	3.71000%	39,263,000.00			121,388.11	-	-	-	121,388.11	121,388.11	-
A-4	4.85000%	30,619,000.00			123,751.79	-	-	-	123,751.79	123,751.79	-
A-5	5.61000%	19,107,000.00			89,325.23	-	-	-	89,325.23	89,325.23	-
A-6	4.64000%	23,000,000.00			88,933.33	-	-	-	88,933.33	88,933.33	-
A-IO	4.50000%	23,000,000.00			86,250.00	-	-	-	86,250.00	86,250.00	-
M-1	5.05000%	5,980,000.00			25,165.83	-	-	-	25,165.83	25,165.83	-
M-2	5.55000%	4,600,000.00			21,275.00	-	-	-	21,275.00	21,275.00	-
M-3	6.00000%	3,450,000.00			17,250.00	-	-	-	17,250.00	17,250.00	-
C	2.16026%	805,002.29			346,820.99	-	-	-	346,820.99	346,820.99	0.00
P		100.00			-	-	-	-	82,566.64	82,566.64	-
R		-			-	-	-	-	-	-	-


Total		215,655,347.74			1,065,936.25	-	-	-	1,148,502.89	1,148,502.89	0.00


							Page 3 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC I
	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)

REMIC1		230,000,740.00			192,655,347.75	1,065,936.24	6,357,643.80	7,423,580.04	-	-	186,297,703.95


Total		230,000,740.00			192,655,347.75	1,065,936.24	6,357,643.80	7,423,580.04	-	-	186,297,703.95


	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)

REMIC1	02/27/04	12/26/04		A-30/360		230,000,740.00	837.629252	4.634490	27.641841	32.276331	809.987411


							Page 4 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC I
	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)

REMIC1	230,000,740.00		11,901,977.93		-	43,703,036.05	43,703,036.05	55,605,013.98	-	-	186,297,703.95


Total	230,000,740.00		11,901,977.93		-	43,703,036.05	43,703,036.05	55,605,013.98	-	-	186,297,703.95


	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)

REMIC1	6.63944%	192,655,347.75			-	-	-	-	-	1,065,936.24	-


Total		192,655,347.75			-	-	-	-	-	1,065,936.24	-


							Page 5 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC 2
	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)

REMIC2		230,000,740.00			192,655,347.75	1,065,936.24	6,357,643.80	7,423,580.04	-	-	186,297,703.95


Total		230,000,740.00			192,655,347.75	1,065,936.24	6,357,643.80	7,423,580.04	-	-	186,297,703.95


	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)

REMIC2	02/27/04	12/26/04		A-30/360		230,000,740.00	837.629252	4.634490	27.641841	32.276331	809.987411


							Page 6 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates
	REMIC 2
	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)

REMIC2	230,000,740.00		11,901,977.93		-	43,703,036.05	43,703,036.05	55,605,013.98	-	-	186,297,703.95


Total	230,000,740.00		11,901,977.93		-	43,703,036.05	43,703,036.05	55,605,013.98	-	-	186,297,703.95


	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)

REMIC2	6.63944%	192,655,347.75			-	-	-	-	-	1,065,936.24	-


Total		192,655,347.75			-	-	-	-	-	1,065,936.24	-


							Page 7 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collection Account Report for December 27, 2004 Distribution


	Collection Account Report


SUMMARY								TOTAL

	Principal Collections							6,357,643.80
	Other Principal Deposits							0.00

	TOTAL NET PRINCIPAL							6,357,643.80

	Interest Collections							1,188,186.32
	Interest Withdrawals							(1,605.46)
	Interest Fees							(38,077.97)

	TOTAL NET INTEREST							1,148,502.89


	TOTAL AVAILABLE FUNDS TO BONDHOLDERS							7,506,146.69


PRINCIPAL - COLLECTIONS								TOTAL

	Scheduled Principal							190,788.01
	Curtailments							(96,981.29)
	Prepayments In Full							5,962,397.81
	Repurchases/Substitutions							301,439.27
	Liquidations							0.00
	Insurance Principal							0.00
	Other Principal							0.00
	Delinquent Principal							(61,354.65)
	Total Realized Loss Of Principal							0.00
	Principal Advanced							61,354.65


	TOTAL PRINCIPAL COLLECTED							6,357,643.80


				Page 8 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collection Account Report for December 27, 2004 Distribution


	Collection Account Report


PRINCIPAL - WITHDRAWALS								TOTAL
SPACE INTENTIONALLY LEFT BLANK


PRINCIPAL - OTHER ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK


INTEREST - COLLECTIONS								TOTAL

	Scheduled Interest							1,118,761.31
	Repurchases/Substitutions							1,884.00
	Liquidation Interest							0.00
	Insurance Interest							0.00
	Other Interest							0.00
	Prepayment Interest Shortfalls							(20,263.93)
	Delinquent Interest							(386,766.74)
	Interest Realized Losses							0.00
	Compensating Interest							20,263.93
	Civil Relief Act Shortfalls							0.00
	Prepayment Premiums							82,566.64
	Interest Advanced							371,741.11


	TOTAL INTEREST COLLECTED							1,188,186.32


				Page 9 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collection Account Report for December 27, 2004 Distribution


	Collection Account Report


INTEREST - WITHDRAWALS								TOTAL

	Credit Risk Manager Fees							1,605.46

	TOTAL INTEREST WITHDRAWALS							1,605.46


INTEREST - OTHER ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK


INTEREST - FEES								TOTAL

	Radian PMI Fee							6,063.59
	Trustee Fee Amount							2,087.10
	Retained Spread							0.00
	Current Servicing Fees							44,952.91
	Delinquent Servicing Fees							(15,025.63)

	TOTAL INTEREST OTHER FEES							38,077.97


				Page 10 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Credit Enhancement Report for December 27, 2004 Distribution


	Credit Enhancement Report


ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK


INSURANCE								TOTAL
SPACE INTENTIONALLY LEFT BLANK


STRUCTURAL FEATURES								TOTAL

	Overcollateralization Amount							0.00
	Excess Overcollateralized Amount							0.01
	Overcollateralization Release Amount							0.01
	Overcollateralization Deficiency Amount							0.00
	Overcollateralization Target Amount							805,002.59


				Page 11 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collateral Report for December 27, 2004 Distribution


	Collateral Report


COLLATERAL								TOTAL
	Loan Count:
	*Original*							1226
	Prior							1,045
	Prefunding							-
	Scheduled Paid Offs							-
	Full Voluntary Prepayments							(34)
	Repurchases							(1)
	Liquidations							-
	Current							1,011

	*Principal Balance:*
	Original							230,000,740.30
	Prior							192,655,348.05
	Prefunding							-
	Scheduled Principal							(190,788.01)
	Partial and Full Voluntary Prepayments							(5,865,416.52)
	Repurchases							(301,439.27)
	Liquidations							-
	Current							186,297,704.25

PREFUNDING								TOTAL
SPACE INTENTIONALLY LEFT BLANK




Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)


				Page 12 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collateral Report for December 27, 2004 Distribution


	Collateral Report


CHARACTERISTICS								TOTAL

	Weighted Average Coupon Original							7.018764%
	Weighted Average Coupon Prior							6.978056%
	Weighted Average Coupon Current							6.980208%
	Weighted Average Months to Maturity Original							344
	Weighted Average Months to Maturity Prior							335
	Weighted Average Months to Maturity Current							334
	Weighted Avg Remaining Amortization Term Original							344
	Weighted Avg Remaining Amortization Term Prior							335
	Weighted Avg Remaining Amortization Term Current							334
	Weighted Average Seasoning Original							3.05
	Weighted Average Seasoning Prior							10.98
	Weighted Average Seasoning Current							11.98

Note: Original information refers to deal issue.




WAC by Groups					Total WAC


WARAT by Groups					Total WARAT


Note: Dates correspond to distribution dates.
				Page 13 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Collateral Report for December 27, 2004 Distribution


	Collateral Report


ARM CHARACTERISTICS								TOTAL

	Weighted Average Margin Original							0.000%
	Weighted Average Margin Prior							0.000%
	Weighted Average Margin Current							0.000%
	Weighted Average Max Rate Original							0.000%
	Weighted Average Max Rate Prior							0.000%
	Weighted Average Max Rate Current							0.000%
	Weighted Average Min Rate Original							0.000%
	Weighted Average Min Rate Prior							0.000%
	Weighted Average Min Rate Current							0.000%
	Weighted Average Cap Up Original							0.000%
	Weighted Average Cap Up Prior							0.000%
	Weighted Average Cap Up Current							0.000%
	Weighted Average Cap Down Original							0.000%
	Weighted Average Cap Down Prior							0.000%
	Weighted Average Cap Down Current							0.000%

Note: Original information refers to deal issue.

SERVICING FEES / ADVANCES								TOTAL

	Current Servicing Fees							29,927.29
	Delinquent Servicing Fees							15,025.63
	TOTAL SERVICING FEES							44,952.92

	Total Servicing Fees							44,952.92
	Compensating Interest							20,263.93
	Delinquent Servicing Fees							(15,025.63)
	COLLECTED SERVICING FEES							50,191.22

	Current PPIS							(20,263.93)
	Current Net PPIS							0.00

	Total Advanced Principal For Current Payment Date							61,354.65
	Total Advanced Interest For Current Payment Date							371,741.11
	TOTAL ADVANCES FOR CURRENT PERIOD							433,095.76


ADDITIONAL COLLATERAL INFORMATION								TOTAL

	Weighted Average Mortgage Rate							6.9802%
	Weighted Average Net Mortgage Rate							6.6394%


				Page 14 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Delinquency Report for December 27, 2004 Distribution


	Delinquency Report - Total


				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			1,337,167.24	937,945.80	-	2,275,113.04
		% Balance			0.72%	0.50%	0.00%	1.22%
		# Loans			8	5	-	13
		% # Loans			0.79%	0.49%	0.00%	1.29%
FORECLOSURE		Balance		-	-	-	895,183.09	895,183.09
		% Balance		0.00%	0.00%	0.00%	0.48%	0.48%
		# Loans		-	-	-	6	6
		% # Loans		0.00%	0.00%	0.00%	0.59%	0.59%
BANKRUPTCY		Balance		609,482.04	-	-	344,509.79	953,991.83
		% Balance		0.33%	0.00%	0.00%	0.18%	0.51%
		# Loans		3	-	-	2	5
		% # Loans		0.30%	0.00%	0.00%	0.20%	0.49%
REO		Balance		-	-	-	264,683.92	264,683.92
		% Balance		0.00%	0.00%	0.00%	0.14%	0.14%
		# Loans		-	-	-	3	3
		% # Loans		0.00%	0.00%	0.00%	0.30%	0.30%

TOTAL		Balance		609,482.04	1,337,167.24	937,945.80	1,504,376.80	4,388,971.88
		% Balance		0.33%	0.72%	0.50%	0.81%	2.36%
		# Loans		3	8	5	11	27
		% # Loans		0.30%	0.79%	0.49%	1.09%	2.67%
Note: <1 Payment = 0-30days, 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 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	REO Report for December 27, 2004 Distribution


	REO Report - Mortgage Loans that Become REO During Current Distribution


SUMMARY				LOAN GROUP

Total Loan Count = 3				Loan Group 1 = Group 1; REO Book Value = Not Available
Total Original Principal Balance = 266,750.00
Total Current Balance = 264,683.92
REO Book Value = Not Available

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

1103076622 1		72,000.00	71,436.72	Mar-01-04	7.875%	MI - 90.00%	360	Feb-06-04
1103076643 1		85,500.00	84,831.15	Mar-01-04	7.875%	MI - 90.00%	360	Feb-06-04
2503044188 1		109,250.00	108,416.05	May-01-04	7.500%	FL - 95.00%	360	Jan-15-04


				Page 16 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Prepayment Report for December 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments


VOLUNTARY PREPAYMENTS								TOTAL

	*Current*
	Number of Paid in Full Loans							34
	Number of Repurchased Loans							1
	Total Number of Loans Prepaid in Full							35

	Paid in Full Balance							5,962,397.81
	Repurchased Loans Balance							301,439.27
	Curtailments Amount							(96,981.29)
	Total Prepayment Amount							6,166,855.79

	*Cumulative*
	Number of Paid in Full Loans							212
	Number of Repurchased Loans							4
	Total Number of Loans Prepaid in Full							216

	Paid in Full Balance							40,946,115.63
	Repurchased Loans Balance							631,329.41
	Curtailments Amount							66,518.74
	Total Prepayment Amount							41,643,963.78

SPACE INTENTIONALLY LEFT BLANK


Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)


				Page 17 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Prepayment Report for December 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments


VOLUNTARY PREPAYMENT RATES								TOTAL

	SMM							3.20%
	3 Months Avg SMM							2.97%
	12 Months Avg SMM
	Avg SMM Since Cut-off							1.99%

	CPR							32.35%
	3 Months Avg CPR							30.36%
	12 Months Avg CPR
	Avg CPR Since Cut-off							21.44%

	PSA							1349.93%
	3 Months Avg PSA Approximation							1382.53%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation							1428.13%







CPR by Groups					Total CPR


PSA by Groups					Total PSA


				Page 18 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Prepayment Report for December 27, 2004 Distribution


	Prepayment Report - Voluntary Prepayments




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 26				© COPYRIGHT 2004 Deutsche Bank


	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Prepayment Detail Report for December 27, 2004 Distribution


	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution


SUMMARY						LOAN GROUP

Total Loan Count = 35						Loan Group 1 = Group 1
Total Original Principal Balance = 6,332,478.00
Total Prepayment Amount = 6,263,837.08


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

1103069876 1			166,950.00	165,351.93	Nov-22-04	8.125%	CO - 90.00%	Paid Off - 360	Dec-31-03
1103082221 1			70,250.00	68,943.16	Nov-26-04	6.625%	IA - 100.00%	Paid Off - 360	Sep-30-03
1103087327 1			164,550.00	162,878.01	Nov-10-04	7.000%	CA - 80.00%	Paid Off - 360	Dec-24-03
1103091957 1			206,500.00	204,541.03	Nov-17-04	6.375%	CA - 70.00%	Paid Off - 360	Dec-31-03
1103092800 1			146,178.00	144,956.93	Nov-19-04	8.000%	AZ - 95.00%	Paid Off - 360	Dec-31-03
1103094305 1			356,200.00	353,598.60	Nov-04-04	8.500%	CA - 91.34%	Paid Off - 360	Jan-09-04
1103097020 1			157,500.00	151,529.94	Nov-19-04	7.375%	FL - 90.00%	Paid Off - 180	Dec-19-03
1103097035 1			108,450.00	107,513.83	Nov-18-04	7.375%	TN - 90.00%	Paid Off - 360	Jan-09-04
1103097236 1			78,000.00	77,263.14	Nov-30-04	7.375%	MI - 73.59%	Paid Off - 360	Dec-31-03
1103097888 1			97,500.00	96,533.15	Nov-17-04	7.125%	CA - 15.12%	Paid Off - 360	Jan-06-04
1103098286 1			242,250.00	240,308.03	Nov-23-04	7.250%	CA - 95.00%	Paid Off - 360	Jan-09-04
1103099954 1			172,000.00	170,166.90	Nov-04-04	6.750%	CT - 80.00%	Paid Off - 360	Jan-14-04
1103100133 1			152,000.00	146,789.54	Nov-05-04	7.500%	CA - 74.88%	Paid Off - 180	Jan-14-04
1103107476 1			152,850.00	151,712.13	Nov-11-04	8.125%	AZ - 95.00%	Paid Off - 360	Jan-07-04
1103108305 1			219,450.00	218,214.55	Nov-30-04	9.500%	VA - 95.00%	Paid Off - 360	Jan-08-04
1103111208 1			192,800.00	190,829.97	Nov-01-04	6.500%	CA - 80.00%	Paid Off - 360	Dec-31-03
1103111670 1			112,000.00	109,893.00	Nov-29-04	6.500%	MO - 70.00%	Paid Off - 360	Jan-09-04
1103111856 1			408,000.00	403,474.14	Nov-02-04	6.125%	CA - 48.29%	Paid Off - 360	Dec-31-03
1103112374 1			180,000.00	178,166.28	Nov-03-04	6.625%	CA - 50.00%	Paid Off - 360	Jan-21-04
1103114501 1			330,050.00	328,176.05	Nov-02-04	9.250%	MD - 95.00%	Paid Off - 360	Feb-11-04
1103114826 1			187,000.00	179,763.68	Nov-24-04	7.125%	CA - 76.33%	Paid Off - 180	Jan-05-04
1103114849 1			113,600.00	112,589.37	Nov-29-04	7.250%	IN - 80.00%	Paid Off - 360	Dec-24-03
1103114879 1			380,000.00	376,876.63	Nov-18-04	7.625%	MA - 80.00%	Paid Off - 360	Dec-24-03
1103117673 1			197,600.00	196,015.40	Nov-22-04	7.750%	CA - 95.00%	Paid Off - 360	Dec-18-03
1103118390 1			142,000.00	140,583.23	Nov-08-04	6.625%	CA - 51.64%	Paid Off - 360	Jan-08-04
1103120146 1			172,400.00	171,000.40	Nov-23-04	6.625%	CA - 80.00%	Paid Off - 360	Feb-11-04
1103122038 1			90,800.00	89,958.83	Nov-26-04	6.500%	CA - 80.00%	Paid Off - 360	Feb-10-04
1103122347 1			145,600.00	144,500.46	Nov-26-04	7.000%	CO - 79.57%	Paid Off - 360	Feb-09-04
1103136481 1			93,200.00	92,630.62	Nov-03-04	8.125%	MA - 80.00%	Paid Off - 360	Feb-09-04
1103136493 1			114,200.00	113,455.50	Nov-10-04	7.750%	CT - 79.98%	Paid Off - 360	Feb-09-04
1103137248 1			168,000.00	166,463.26	Nov-10-04	6.375%	FL - 70.00%	Paid Off - 360	Feb-06-04
2503042473 1			137,600.00	136,703.03	Nov-03-04	7.750%	FL - 80.00%	Paid Off - 360	Jan-09-04
2503042802 1			230,000.00	228,017.09	Nov-19-04	6.875%	CA - 82.15%	Paid Off - 360	Dec-18-03
2503044394 1			143,000.00	143,000.00	Nov-29-04	6.500%	CA - 63.84%	Paid Off - 360	Jan-26-04
1103104126 1			304,000.00	301,439.27	Dec-01-04	7.500%	AZ - 95.00%	Repur/Subs - 360	Jan-07-04


					Page 20 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Realized Loss Report for December 27, 2004 Distribution


	Realized Loss Report - Collateral


COLLATERAL REALIZED LOSSES								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.

SPACE INTENTIONALLY LEFT BLANK


							3 Months Moving Average


Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation


				Page 21 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Realized Loss Report for December 27, 2004 Distribution


	Realized Loss Report - Collateral


DEFAULT SPEEDS								TOTAL

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

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

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



CDR by Groups					Total CDR


SDA by Groups					Total SDA


				Page 22 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Realized Loss Report for December 27, 2004 Distribution


	Realized Loss Report - Collateral




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 23 of 26				© COPYRIGHT 2004 Deutsche Bank


	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	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
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 24 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Triggers, Adj. Rate Cert. and Miscellaneous Report for December 27, 2004 Distribution


	Triggers, Adj. Rate Cert. and Miscellaneous Report


TRIGGER EVENTS								TOTAL

	Optional Termination Date Reached							No

	Trigger Event Occured							Yes

	Step Down Date Reached							No


ADJUSTABLE RATE CERTIFICATE INFORMATION								TOTAL
SPACE INTENTIONALLY LEFT BLANK


ADDITIONAL INFORMATION								TOTAL
SPACE INTENTIONALLY LEFT BLANK


				Page 25 of 26				© COPYRIGHT 2004 Deutsche Bank
	Impac Secured Assets Corp. 2004-1
	Mortgage Pass-Through Certificates

	Additional Certificate Report for December 27, 2004 Distribution


	Additional Certificate Report


	CLASS							Net PPIS & Other Int. Shortfalls

	A-1							0.00
	A-2							0.00
	A-3							0.00
	A-4							0.00
	A-5							0.00
	A-6							0.00
	A-IO							0.00
	M-1							0.00
	M-2							0.00
	M-3							0.00
	C							0.00
	P							0.00


				Page 26 of 26				© COPYRIGHT 2004 Deutsche Bank

IMPAC SECURED ASSETS CORP MORTGAGE PASS THR CERT SER 2004-1 8-K