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) April 21, 2003 BANC ONE HELOC TRUST 1998-1 (Exact name of registrant as specified in its charter) United States 333-03911-10 		36-1248602 (State or Other	(Commission File 	(I.R.S. Employer Jurisdiction	Number) 		Identification No.) of Incorporation) c/o Bank One, NA Global Corporate Trust Services 55 West Monroe St. IL1-0481 Chicago, IL (Address of Principal Executive Offices) 60670-0126 (Zip Code) Registrant's telephone number, including area code:		312-336-9730 Item 5.	Other Events On behalf of Banc One HELOC Trust 1998-1, a Trust created pursuant to the Pooling Agreement, dated August 31, 1998, the Paying Agent has caused to be filed with the Commission, the Monthly Report dated April 21, 2003. The Monthly Report is filed pursuant to and in accordance with (1) numerous no-action letters (2) current Commission policy in the area. The filing of the Monthly Report will occur subsequent to each monthly distribution to the holders of the Trust's Investor Certificates. A.	Monthly Report Information: Aggregate distribution information 	for the current distribution date April 21, 2003. 		 Principal	 Interest		Ending Balance Cede & Co.	$6,874,471.98	$293,350.36		$229,961,023.65 B.	No delinquency in payment under the Transferor Certificate, or 	the MBIA Insurance Policy has occurred. C.	Have any deficiencies occurred? NO. Date: Amount: D.	Were any amounts paid or are any amounts payable under the 	MBIA Insurance Policy? NO Amount: E.	Are there any developments with respect to the MBIA Insurance 	Policy? NONE. F.	Item 1: Legal Proceedings: NONE G.	Item 2: Changes in Securities: NONE H.	Item 4: Submission of Matters to a Vote of Security Holders: NONE I.	Item 5: Other Information - Items 1, 2, 4, 5 if applicable: NOT 	APPLICABLE Item 7.	Monthly Statements and Exhibits Exhibit No. 1.	Monthly Statement to Certificateholders dated April 21, 2003 Statement to Certificateholders (Page 1 of 2) Distribution Date: 4/21/03 INVESTOR CERTIFICATES DISTRIBUTION SUMMARY (PER $1000 ORIGINAL PRINCIPAL AMOUNT) A. INTEREST & PRINCIPAL DISTRIBUTIONS TO INVESTORS Investor Certificate Interest Distributed 0.345118 Investor Certificate Interest Shortfall Distributed 0.000000 Remaining Unpaid Investor Certificate Interest Shortfall 0.000000 Managed Amortization Period ? (Yes=1; No=0) 1 Investors Certificate Principal Distributed 8.087614 Principal Distribution Amount 7.996546 Maximum Principal Payment 12.216781 Alternative Principal Payment 7.996546 Principal Collections less Additional Balances 7.996546 Investor Loss Amount Distributed to Investors 0.277228 Accelerated Principal Distribution Amount -0.186160 Credit Enhancement Draw Amount 0.00 Total Amount Distributed to Certificateholders (P & I) 8.432732 B. INVESTOR CERTIFICATE PRINCIPAL BALANCE Beginning Investor Certificate Balance 215,171,414.57 Ending Investor Certificate Balance 208,296,942.59 Beginning Invested Amount 220,124,209.28 Ending Invested Amount 213,091,501.37 Investor Certificateholder Floating Allocation Percentage 92.8748% Pool Factor 0.2450552 Liquidation Loss Amount for Liquidated Loans 253,721.96 Unreimbursed Liquidation Loss Amount 0.00 C. POOL INFORMATION Beginning Pool Balance 237,011,809.79 Ending Pool Balance 229,961,023.65 Servicing Fee 98,754.92 D. INVESTOR CERTIFICATE RATE Investor Certificate Rate 1.533750% LIBOR Rate 1.283750% Maximum Rate 4.463997% E. DELINQUENCY & REO STATUS Delinquent 30-59 days No. of Accounts 103 Trust Balances 3,170,523.75 Delinquent 60-89 days No. of Accounts 39 Trust Balances 1,471,289.20 Delinquent 90+ days No. of Accounts 125 Trust Balances 4,640,018.13 Delinquent 9+ Months No. of Accounts 0 Trust Balances 0 REO No. of Accounts 0 Trust Balances 0.00 IN WITNESS WHEREOF, the undersigned has caused this Certificate to be duly executed and certifies to the best of his knowledge and belief that information is true and correct this 16th day of April 2003 		 Bank One, N.A. 		 as Servicer 			/s/ Michael J. Grubb 		 _______________________________________ 		 	 Michael J. Grubb 		 First Vice President 	Distribution List: 	" Keith Richardson - Bank One, N.A." 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 thereunto duly authorized. BANC ONE HELOC TRUST 1998-1 By /s/ Michael J. Grubb Name:	Michael J. Grubb Dated April 21, 2003