8-K

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):  July 27, 2005

J.P. MORGAN ACCEPTANCE CORPORATION I

J.P. MORGAN MORTGAGE TRUST 2005-A5

J.P. MORGAN ACCEPTANCE CORPORATION I
(Exact name of registrant as specified in its charter)
Delaware	333-121990	13-3475488
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
270 Park Avenue New York, New York  10017
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (212) 834-3850

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:

[ ]

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ]

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ]

Pre-commencement communications pursuant to Rule 14d-2(d) 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.

Filing of Computational Materials

Pursuant to Rule 424(b) under the Securities Act of 1933, concurrently with, or subsequent to, the filing of this Current Report on Form 8-K (the “Form 8-K”), J.P. Morgan Acceptance Corporation I  (the “Company”) is filing a prospectus and prospectus supplement with the Securities and Exchange Commission relating to its J.P. Morgan Acceptance Corporation I, J.P. Morgan Mortgage Trust 2005-A5.

Attached hereto as Exhibit 99.1 are the  “Computational Materials” (as defined in the no-action letter dated May 20, 1994 issued by the Division of Corporation Finance of the Securities and Exchange Commission (the “Commission”) to Kidder, Peabody Acceptance Corporation I, Kidder, Peabody & Co. Incorporated, and Kidder Structured Asset Corporation and the no-action letter made available May 27, 1994 issued by the Division of Corporation Finance of the Commission to the Public Securities Association) and/or “ABS Term Sheets” (as defined in the no-action letter made available February 17, 1995 issued by the Division of Corporation Finance of the Commission to the Public Securities Association).

In connection with the offering of the J.P. Morgan Acceptance Corporation I , J.P. Morgan Mortgage Trust 2005-A5, J.P. Morgan Securities Inc. (“J.P. Morgan Securities”), as underwriter of the Certificates, has prepared certain materials (the “Computational Materials”) for distribution to their potential investors.  Although the Company provided J.P. Morgan Securities with certain information regarding the characteristics of the Mortgage Loans in the related portfolio, the Company did not participate in the preparation of the Computational Materials.

Item 9.01.  Financial Statements and Events

         Information and Exhibits.

(a)

Not applicable.

(b)

Not applicable.

(c)

Exhibits:

99.1

Computational Materials

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

J.P. MORGAN ACCEPTANCE CORPORATION I

By: /s/ Jonathan Davis

    Name:  Jonathan P. Davis

    Title:  Vice President

Dated:  July 27, 2005

Exhibit Index

Exhibit

99.1

Computational Materials

EX-99

The information herein will be superseded in its entirety by the final prospectus and prospectus supplement relating to the securities.

THIS PAGE MUST BE ACCOMPANIED BY A DISCLAIMER. IF YOU DID NOT RECEIVE SUCH A DISCLAIMER, PLEASE CONTACT YOUR JPMORGAN SALES REPRESENTATIVE

Preliminary Structural and Collateral Term Sheet

$1,239,000,000(Approximate) of Senior Certificates J.P. Morgan Mortgage Trust 2005-A5 Mortgage Pass-Through Certificates, Series 2005-A5
06/27/2005

Features of the Transaction

- Offering consists of approximately [1,239mm] of Senior Certificates expected to be rated AAA by 2 of the 4; S&P, Moody's, Fitch, Dominion.

- The Amount of Senior Certificates is approximate and may vary.

- Multiple groups of Mortgage Loans will collateralize the transaction

- There are approximately 5 groups of Senior Certificates, which may vary.

- The Credit Support for the Senior Certificates of Pools 1, 2, 3, 4 & 5 is Cross-Collateralized, with respect to losses

Key Terms

Issuer :	J.P.Morgan Mortgage Trust
Underwriter :	J.P.Morgan Securities, Inc.
Depositor :	J.P. Morgan Acceptance Corp. I
Master Servicer:	Wells Fargo
Trustee:	Wachovia Bank
Type of Issuance:	Public
Servicer Advancing:	Yes, Subject to Recoverability.
Compensating Interest:	Paid, But Capped.
Clean-Up Call / Optional Termination:	[5%] clean-up call (aggregate portfolio)
Legal Investment:	The Senior Certificates are
	SMEEA Eligible at Settlement.
ERISA Eligible:	The Senior Certificates are
	ERISA eligible subject to limitations set
	forth in the final prospectus supplement.
Tax Treatment:	REMIC
Structure:	Senior/Subordinate w/ Shifting Interest
	and Subordinate Certificate Prepayment Lockout
Expected AAA Subordination (Group 1):	3.5% +/- .50%
Rating Agencies:	At least 2 of 4; Moody's, S&P, Fitch, Dominion
Registration:	Senior Certificates - DTC

Time Table

Cut-Off Date	July 1, 2005
Settlement Date	July 29, 2005
First Distribution Date	August 25, 2005
Distribution Date	25th or Next Business Day

Preliminary Mortgage Pool Data (approximate)

	Pool 1	Pool 2	Pool 3	Pool 4	Pool 4
Collateral Type	7Yr Hybrid	5Yr Hybrid	7Yr Hybrid	10Yr Hybrid	10Yr Hybrid
	ARMs	ARMs	ARMs	ARMs	ARMs
Outstanding Principal Balance	275,000,000	350,478,995	92,062,633	391,598,484	175,339,926
Number of Mortgage Loans	539	632	154	528	333
Average Principal Balance	542,697	588,165	597,855	764,020	546,815
Weighted Average Net Mortgage Rate	5.20%	5.17%	5.36%	5.42%	4.94%
Weighted Average Maturity	359	359	358	358	339
Weighted Average Seasoning	1	1	2	2	20
Weighted Average Months to Roll	83	59	82	118
ARM Index	LY1(100%)	LY1(100%)	LY1(72%),LM6(28%)	LY1(86%),LM6(14%)	LY1(63%),CMT(37%)
Weighted Average Gross Margin	2.29	2.27	2.19	2.28	2.29
Initial Periodic Rate Cap	5.00	5.00	5.08	5.00	4.85
Subsequent Periodic Rate Cap	2.00	2.00	1.76	1.86	2.01
Lifetime Rate Cap	5.00	5.00	5.08	5.00	4.99
Weighted Average Loan-to-Value	68%	71%	69%	64%	63%
Weighted Average FICO Score	737	736	735	742	735
Geographic Distribution	CA(42%),NY(16%)	CA(52%),FL(8%)	CA(24%),FL(10%)	NY(31%),CA(28%)	NY(46%),CA(23%)
Percent Owner Occupied	93%	89%	93%	87%	95%
Percent Single Family / PUD	79%	81%	87%	68%	72%
Interest Only	24%	61%	78%	40%	0%
Primary Servicer	Chase	Chase	Chase	Chase	Chase
Other Servicer		PHH	PHH	PHH

JPMSI Contact Information

Trading/Structuring	Greg Boester
	Tom Scudese	212.834.2499
	Marc Simpson

JPMorgan is the marketing name used by the specific legal entity or entities named in the attached materials. This material is not intended as an offer or solicitation for the  purchase or sale of any financial instrument. Securit ies or financial instruments mentioned herein may not be suitable for all investors. The recipient of these materials must  make its own independent decisions regarding any securities or financial instruments mentioned herein. The information contained her ein is qualified in its entirety by the  information in the prospectus and prospectus supplement for this transaction. The information contained herein is preliminary as of the date hereof, supersedes any previous such  information delivered to you and will be superseded by any such information subsequently delivered and ultimately by the final prospectus and prospectus supplement relating to  the securities and any other inform ation subsequently filed with the Securities and Exchange Commission. These mater ials are subject to change, completion or amendment from  time to time without notice, and JPMorgan is under no obligation to keep you advised of such changes. These materials have been provided to you for informational purposes  only and may not be relied upon by you in evaluating the merits of investing in the securities described herein. Any investment decision with respect to the securities should be  made by you based solely upon the information contained in the final prospectus and prospectus supplemen t relating to the securities. You should consult your own counsel,  accountant and other advisors as to the legal, tax, business, financial and related aspects of a purchase of these securities.

The attached information may not be provided to any third party other than the addressee’s legal, tax, financial and/or accounting advisors for the purposes of evaluating said  material. Notwithstanding anything to the contrary contained herein, expect to the extent necessary to comply with applicable securities laws, any recipient of these materials (and  each employee, representative or other agent of the recipient) may disclose to any and all persons, without limitation of any kind, the federal income tax treatment and tax  structure of the issuer and the certifi cates, any fact relevant to understanding the federal tax treatment or tax structure of the issuer or the certificates, and all materials of any kind (including opinions and other tax analyses) relating to such federal tax treatment or tax structure other than the identity of the issuer and information that would permit the  identification of th e issuer. Numerous assumptions were used in preparing these materials, which may or may not be reflected herein. As such, no assurance can be given as to the  attached materials’ accuracy, appropriateness or completeness in any particular context; nor as to whether these materials and/or the assumptions upon which they are based  reflect present market conditions or future market performance. These materials should not be construed as either projections or predictions or as legal, tax, financial or  accounting advice.

Neither JPMorgan nor any of its affiliates makes any representation or warranty as to the accuracy or completeness of the information herein.

THIS INFORMATION IS FURNISHED TO YOU SOLELY BY JPMORGAN AND NOT BY THE ISSUER OF THE SECURITIES OR ANY OF ITS AFFILIATES (OTHER THAN JPMORGAN). JPMORGAN IS ACTING AS UNDERWRITER AND NOT ACTING AS AGENT FOR THE ISSUER IN CONNECTION WITH THE PROPOSED TRANSACTION.

The information herein will be superseded in its entirety by the final prospectus and prospectus supplement relating to the securities.

THIS PAGE MUST BE ACCOMPANIED BY A DISCLAIMER. IF YOU DID NOT RECEIVE SUCH A DISCLAIMER, PLEASE CONTACT YOUR JPMORGAN SALES REPRESENTATIVE

J.P. Morgan Mortgage Trust 2005-A5

Mortgage Pass-Through Certificates, Series 2005-A5

Deal Summary Report

Assumptions

Collateral

Settlement

29-Jul-05

Prepay

25 CPR

Balance

WAC

WAM

Age

WAL

1st Pay Date

25-Aug-05

Default

0 CDR

$1,274,143,006.52

5.485

356

4

3.37

Recovery

0 months

Severity

0%

Tranche

Rating

Balance

Coupon

Principal

Avg

Dated

Name

Window

Life

Date

7-1A

265,375,000.00

5.1970

08/05 - 06/12

2.82

01-Jul-05

5-1

338,212,230.05

5.1680

08/05 - 06/10

2.54

01-Jul-05

7-1B

88,840,440.58

5.3580

08/05 - 05/12

2.86

01-Jul-05

10-1A

377,892,537.11

5.4190

08/05 - 05/15

3.03

01-Jul-05

10-1B

159,227,793.55

4.9250

08/05 - 09/13

2.88

01-Jul-05

SUBS

44,595,005.23

5.2340

08/05 - 07/35

9.39

01-Jul-05

Yield Curve

Mat 3MO 6MO 2YR 5YR 10YR 30YR

Yld 3.057 3.259 3.630 3.752 3.972 4.270

Swap curve

3mo 6mo 1yr     2yr     3yr    4yr  5yr   7y

3.47 3.65 3.8325 3.98 4.04 4.09 4.14 4.25

JPMorgan is the marketing name used by the specific legal entity or entities named in the attached materials. This material is not intended as an offer or solicitation for the  purchase or sale of any financial instrument. Securit ies or financial instruments mentioned herein may not be suitable for all investors. The recipient of these materials must  make its own independent decisions regarding any securities or financial instruments mentioned herein. The information contained her ein is qualified in its entirety by the  information in the prospectus and prospectus supplement for this transaction. The information contained herein is preliminary as of the date hereof, supersedes any previous such  information delivered to you and will be superseded by any such information subsequently delivered and ultimately by the final prospectus and prospectus supplement relating to  the securities and any other inform ation subsequently filed with the Securities and Exchange Commission. These mater ials are subject to change, completion or amendment from  time to time without notice, and JPMorgan is under no obligation to keep you advised of such changes. These materials have been provided to you for informational purposes  only and may not be relied upon by you in evaluating the merits of investing in the securities described herein. Any investment decision with respect to the securities should be  made by you based solely upon the information contained in the final prospectus and prospectus supplemen t relating to the securities. You should consult your own counsel,  accountant and other advisors as to the legal, tax, business, financial and related aspects of a purchase of these securities.

The attached information may not be provided to any third party other than the addressee’s legal, tax, financial and/or accounting advisors for the purposes of evaluating said  material. Notwithstanding anything to the contrary contained herein, expect to the extent necessary to comply with applicable securities laws, any recipient of these materials (and  each employee, representative or other agent of the recipient) may disclose to any and all persons, without limitation of any kind, the federal income tax treatment and tax  structure of the issuer and the certifi cates, any fact relevant to understanding the federal tax treatment or tax structure of the issuer or the certificates, and all materials of any kind (including opinions and other tax analyses) relating to such federal tax treatment or tax structure other than the identity of the issuer and information that would permit the  identification of th e issuer. Numerous assumptions were used in preparing these materials, which may or may not be reflected herein. As such, no assurance can be given as to the  attached materials’ accuracy, appropriateness or completeness in any particular context; nor as to whether these materials and/or the assumptions upon which they are based  reflect present market conditions or future market performance. These materials should not be construed as either projections or predictions or as legal, tax, financial or  accounting advice.

Neither JPMorgan nor any of its affiliates makes any representation or warranty as to the accuracy or completeness of the information herein.

THIS INFORMATION IS FURNISHED TO YOU SOLELY BY JPMORGAN AND NOT BY THE ISSUER OF THE SECURITIES OR ANY OF ITS AFFILIATES (OTHER THAN JPMORGAN). JPMORGAN IS ACTING AS UNDERWRITER AND NOT ACTING AS AGENT FOR THE ISSUER IN CONNECTION WITH THE PROPOSED TRANSACTION.

EX-99

jpmmt05a5_0725 - Stack Price/Yield

Settle	7/29/2005
First Payment	8/25/2005
	10 CPR	15 CPR	20 CPR	25 CPR	30 CPR	35 CPR
GMC_1A1
Price	100.671875	100.671875	100.671875	100.671875	100.671875	100.671875
Yield	4.956	4.872	4.761	4.638	4.507	4.368
WAL	3.99	3.04	2.29	1.80	1.46	1.22
Mod Durn	3.420	2.667	2.066	1.655	1.364	1.150
Mod Convexity	0.186	0.123	0.076	0.050	0.035	0.026
Principal Window	Aug05- Jun12	Aug05 - Jun12	Aug05 - Jul11	Aug05 - Mar10	Aug05 - May09	Aug05 - Sep08
Maturity #mos	83	83	72	56	46	38
GMC_2A1
Price	100.519407	100.519407	100.519407	100.519407	100.519407	100.519407
Yield	4.943	4.885	4.810	4.711	4.598	4.478
WAL	3.37	2.78	2.26	1.80	1.46	1.22
Mod Durn	2.973	2.475	2.039	1.653	1.359	1.143
Mod Convexity	0.131	0.100	0.073	0.050	0.035	0.025
Principal Window	Aug05 - Jun10	Aug05 - Jun10	Aug05 - Jun10	Aug05 - Mar10	Aug05 - Apr09	Aug05 - Aug08
Maturity #mos	59	59	59	56	45	37
GMC_2A2
Price	101.175466	101.175466	101.175466	101.175466	101.175466	101.175466
Yield	4.877	4.877	4.877	4.877	4.863	4.836
WAL	4.91	4.91	4.91	4.90	4.69	4.34
Mod Durn	4.242	4.242	4.242	4.235	4.078	3.803
Mod Convexity	0.215	0.215	0.215	0.215	0.200	0.177
Principal Window	Jun10 - Jun10	Jun10 - Jun10	Jun10 - Jun10	Mar10 - Jun10	Apr09 - Jun10	Aug08 - Jun10
Maturity #mos	59	59	59	59	59	59
GMC_3A1
Price	100.781250	100.781250	100.781250	100.781250	100.781250	100.781250
Yield	4.994	4.786	4.569	4.341	4.101	3.846
WAL	2.92	1.91	1.41	1.10	0.89	0.75
Mod Durn	2.576	1.753	1.314	1.040	0.853	0.717
Mod Convexity	0.110	0.053	0.031	0.020	0.014	0.011
Principal Window	Aug05 - Feb12	Aug05 - Nov09	Aug05 - Sep08	Aug05 - Jan08	Aug05 - Jul07	Aug05 - Mar07
Maturity #mos	79	52	38	30	24	20
GMC_3A2
Price	100.640625	100.640625	100.640625	100.640625	100.640625	100.640625
Yield	5.258	5.237	5.192	5.131	5.064	4.993
WAL	6.82	6.02	4.77	3.70	2.98	2.46
Mod Durn	5.579	5.010	4.091	3.266	2.681	2.251
Mod Convexity	0.375	0.307	0.210	0.135	0.092	0.066
Principal Window	Feb12 - May12	Nov09 - May12	Sep08 - May12	Jan08 - Dec10	Jul07 - Nov09	Mar07 - Feb09
Maturity #mos	82	82	82	65	52	43
GMC_5A1
Price	100.109375	100.109375	100.109375	100.109375	100.109375	100.109375
Yield	4.892	4.870	4.846	4.819	4.790	4.758
WAL	5.13	4.23	3.53	2.96	2.50	2.13
Mod Durn	4.271	3.581	3.031	2.581	2.211	1.907
Mod Convexity	0.284	0.218	0.169	0.130	0.100	0.078
Principal Window	Aug05 - Nov13	Aug05 - Nov13	Aug05 - Nov13	Aug05 - Nov13	Aug05 - Nov13	Aug05 - Nov13
Maturity #mos	100	100	100	100	100	100
GMC_6T1
Price	101.203125	101.203125	101.203125	101.203125	101.203125	101.203125
Yield	5.171	5.098	5.016	4.924	4.820	4.706
WAL	5.84	4.69	3.82	3.15	2.62	2.21
Mod Durn	4.680	3.852	3.210	2.701	2.294	1.966
Mod Convexity	0.351	0.260	0.195	0.146	0.110	0.084
Principal Window	Aug05 - May15	Aug05 - May15	Aug05 - May15	Aug05 - May15	Aug05 - May15	Aug05 - May15
Maturity #mos	118	118	118	118	118	118
LIBOR_6MO	3.870	3.870	3.870	3.870	3.870	3.870
LIBOR_1YR	4.094	4.094	4.094	4.094	4.094	4.094
CMT_1YR	3.660	3.660	3.660	3.660	3.660	3.660