1 SERVICER'S CERTIFICATE (PURSUANT TO SECTION 3.9 OF THE POOLING AND SERVICING AGREEMENT, DATED JUNE 1, 1996) BANC ONE AUTO TRUST 1996-B Interest Period December 15, 1996 through January 14, 1997 Collection Period December 1, 1996 through December 31, 1996 The undersigned officer of Bank One, Arizona, N.A., pursuant to the Pooling and Servicing Agreement, as Servicer, does hereby certify to the best of his knowledge and belief that the attached information is true and correct. Signed by: Tom Lewis Attested: Heather Smith Tom Lewis Accounting Specialist Vice President Bank One, Arizona, N.A. Bank One, Arizona, N.A. 2 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 A. ORIGINAL DEAL PARAMETER INPUTS - --------------------------------- (A) Total Receivable Balance $305,686,731.00 (B) Total Certificate Balance $305,686,731.00 (C) Class A Certificates (i) Class A Percentage 96.00% (ii) Original Class A Principal Balance $293,459,000.00 (iii) Class A Pass-Through Rate 6.55% (D) Class B Certificates (i) Class B Percentage 4.00% (ii) Original Class B Principal Balance $ 12,227,731.00 (iii) Class B Pass-Through Rate 6.70% (E) Servicing Fee Rate (per annum) 1.00% (F) Weighted Average Coupon (WAC) 12.15% (G) Weighted Average Original Maturity (WAOM) 60.12 months (H) Weighted Average Remaining Maturity (WAM) 45.97 months (I) Number of Receivables 31,595 (J) Reserve Fund (i) Reserve Fund Initial Deposit Percentage (of initial Certificate Balance) 1.50% (ii) Reserve Fund Initial Deposit $ 4,585,300.97 (iii) Specified Reserve Balance: (a) On any Distribution Date: The greater of J(iii)(b or c) if 1.75% charge-off and delinquency triggers not hit - otherwise J(iii)(d) (b) Percent of Initial Certificate Balance 1.00% (c) Percent of Remaining Certificate Balance 3.25% (d) Trigger Percent of Remaining Certificate Balance 8.00% 3 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 B. INPUTS FROM PREVIOUS MONTHLY SERVICER REPORTS - ------------------------------------------------ (A) Total Receivable Balance $226,939,985.23 (B) Total Certificate Balance $226,939,985.23 (C) Total Certificate Pool Factor 0.7423940 (D) Class A Certificates (i) Class A Certificate Balance $217,862,191.56 (ii) Class A Certificate Pool Factor 0.7423940 (E) Class B Certificates (i) Class B Certificate Balance $ 9,077,793.67 (ii) Class B Certificate Pool Factor 0.7423940 (F) Reserve Fund Balance 7,375,549.52 (G) Cumulative Net Losses for All Prior Periods 2,255,811.72 (H) Charge-off Rate for Second Preceding Period 0.58% (I) Charge-off Rate for Preceding Period 1.56% (J) Delinquency Percentage for Second Preceding Period 0.46% (K) Delinquency Percentage for Preceding Period 0.45% (L) Weighted Average Coupon (WAC) 12.130% (M) Weighted Average Remaining Maturity (WAM) 41.66 months (N) Number of Receivables 26,492 C. INPUTS FROM THE MAINFRAME - ---------------------------- (A) Simple Interest Receivables Principal (i) Principal Collections 9,960,874.19 (ii) Prepayments in Full 0.00 (iii) Repurchased Loan Proceeds Related to Principal 0.00 (iv) Other Refunds Related to Principal 0.00 (B) Simple Interest Receivables Interest (i) Interest Collections 2,154,751.84 (ii) Repurchased Loan Proceeds Related to Interest 0.00 (C) Weighted Average Coupon (WAC) 11.55% (D) Weighted Average Remaining Maturity (WAM) 39.10 months (E) Remaining Number of Receivables 25,793 (F) Delinquent Receivables Dollar Amount # Units ------------- -------- (i) 30-59 Days Delinquent 3,983,400 1.76% 462 (ii) 60-89 Days Delinquent 770,507 0.34% 87 (iii) 90 Days or More Delinquent 213,635 0.09% 27 D. INPUTS DERIVED FROM OTHER SOURCES - ------------------------------------ (A) Reserve Fund Investment Income 32,101.11 (B) Collection Account Investment Income 0.00 (C) Realized Losses for Collection Period: (i) Charge-offs for current Collection Period - Principal 702,566.10 (ii) Realized Losses for Collection Period (B)(i)-(C)(i) 478,175.05 (D) Net Loss and Liquidated Receivables Information (i) Liquidation Proceeds Related to Principal 224,391.05 (ii) Liquidation Proceeds Related to Interest 0.00 (iii) Recoveries from Prior Month Charge Offs 224,391.05 4 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 E. COLLECTIONS - -------------- Interest Collections: (A) Interest Payments Received 2,154,751.84 (B) Liquidation Proceeds Related to Interest 0.00 (C) Repurchased Loan Proceeds 0.00 (D) Recoveries from Prior Month Charge Offs 224,391.05 ------------------ (E) Interest Collections 2,379,142.89 Principal Collections: (F) Principal Payments Received $ 9,960,874.19 (G) Liquidation Proceeds Related to Principal 224,391.05 (H) Repurchased Loan Proceeds 0.00 ------------------ (I) Principal Collections 10,185,265.24 (J) Total Collections $12,564,408.13 F. DISTRIBUTABLE AMOUNTS - ------------------------ (A) Servicing Fee : (i) Servicing Fee $ 189,116.65 (ii) Prior Collection Period unpaid Servicing Fees 0.00 ------------------ (iii) Total Servicing Fee $ 189,116.65 Interest: (B) Class A Certificates (i) Class A Monthly Interest $ 1,189,164.46 (ii) Class A prior period Interest Carryover Shortfall 0.00 ------------------ (iii) Class A Interest Distribution $ 1,189,164.46 (C) Class B Certificates (i) Class B Monthly Interest $ 50,684.35 (ii) Class B prior period Interest Carryover Shortfall 0.00 ------------------ (iii) Class B Interest Distribution $ 50,684.35 (D) Total Certificate Interest Distribution $ 1,239,848.81 (E) Total Certificate Interest Distribution plus Total Servicing Fee $ 1,428,965.46 F. DISTRIBUTABLE AMOUNTS - ------------------------ Principal: (F) Principal Collections $10,185,265.24 (G) Realized Losses 478,175.05 ------------------ (H) Total Monthly Principal $10,663,440.29 (I) Class A Certificates (i) Class A Monthly Principal 10,236,893.55 (ii) Class A prior period Principal Carryover Shortfall 0.00 ------------------ (iii) Class A Principal Distribution 10,236,893.55 (J) Class B Certificates (i) Class B Monthly Principal 426,546.74 (ii) Class B prior period Principal Carryover Shortfall 0.00 ------------------ (iii) Class B Principal Distribution 426,546.74 (K) Total Principal Distribution 10,663,440.29 (L) Total Interest and Principal Distribution Amounts 12,092,405.75 plus Servicing Fee 5 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 G. DISTRIBUTIONS - ---------------- (A) Total Interest Collections available to be distributed 2,379,142.89 (B) Class B Percentage of Principal Collections 407,419.33 (C) Servicing Fee : (i) Total Servicing Fee 189,116.65 (ii) Servicing Fee paid 189,116.65 --------------- (iii) Unpaid Servicing Fee 0.00 (D) Total Interest Collections available to be distributed after Servicing Fee paid 2,190,026.24 Interest: (E) Class A Certificates (i) Class A Interest Distribution 1,189,164.46 (ii) Class A Interest Distribution paid from Interest Collections after Servicing Fee 1,189,164.46 (iii) Total Interest Collections available after Class A Interest Distribution paid 1,000,861.77 (iv) Class A Interest Distribution remaining to be paid 0.00 (v) Class A Interest Distribution paid from Class B Percentage of Principal Collections 0.00 (vi) Class A Interest Distribution remaining to be paid 0.00 (vii) Class A Interest Distribution paid from Reserve Fund 0.00 (viii) Class A Interest Carryover Shortfall 0.00 (ix) Class A Interest Distribution paid 1,189,164.46 (F) Class B Certificates (i) Class B Interest Distribution 50,684.35 (ii) Class B Interest Distribution paid from Interest Collections after Class A Interest Distribution 50,684.35 (iii) Total Interest Collections available after Class B Interest Distribution paid 950,177.43 (iv) Class B Interest Distribution remaining to be paid 0.00 (v) Class B Interest Distribution paid from Reserve Fund 0.00 (vi) Class B Interest Carryover Shortfall 0.00 (vii) Class B Interest Distribution paid 50,684.35 (G) Total Interest Paid 1,239,848.81 (H) Total Interest and Servicing Fee Paid 1,428,965.46 (I) Total Interest Collections available after Servicing Fee and Class A and Class B Interest Distribution paid 950,177.43 Total Collections available to be distributed: (J) Total Principal Collections 10,185,265.24 (K) Excess Interest 950,177.43 (L) Less: Class B Percentage of Principal Collections used to pay Class A Interest Distribution 0.00 (M) Total Collections available to be distributed as principal 11,135,442.67 Principal: (N) Class A Certificates (i) Class A Principal Distribution 10,236,893.55 (ii) Class A Principal Distribution paid from total Collections available to be distributed 10,236,893.55 (iii) Total Collections available after Class A Principal Distribution paid 898,549.12 (iv) Class A Principal Distribution remaining to be paid 0.00 (v) Class A Principal Distribution paid from Reserve Fund 0.00 (vi) Class A Principal Carryover Shortfall 0.00 (vii) Total Class A Principal Distribution paid 10,236,893.55 (O) Class B Certificates (i) Class B Principal Distribution 426,546.74 (ii) Class B Principal Distribution paid from total Collections available to be distributed 426,546.74 (iii) Total Collections available after Class B Principal Distribution paid 472,002.38 (iv) Class B Principal Distribution remaining to be paid 0.00 (v) Class B Principal Distribution paid from Reserve Fund 0.00 (vi) Class B Principal Carryover Shortfall 0.00 (vii) Total Class B Principal Distribution paid 426,546.74 (P) Total Excess Cash to the Reserve Fund 472,002.38 6 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 H. POOL BALANCE AND PORTFOLIO INFORMATION - ----------------------------------------- Beginning End of Period of Period ----------------------- ---------------------- (A) Balances and Pool Factors (i) Aggregate Balance of Certificates $226,939,985.23 $216,276,544.94 (ii) Aggregate Certificate Pool Factor 0.7423940 0.7075104 (iii) Class A Principal Balance 217,862,191.56 207,625,298.01 (iv) Class A Pool Factor 0.7423940 0.7075104 (v) Class B Principal Balance 9,077,793.67 8,651,246.93 (vi) Class B Pool Factor 0.7423940 0.7075104 (B) Pool Information (i) Weighted Average Coupon (WAC) 12.13% 11.55% (ii) Weighted Average Remaining Maturity (WAM) 41.66 months 39.10 months (iii) Remaining Number of Receivables 26,492 25,793 (iv) Pool Balance $226,939,985.23 $216,276,544.94 I. RECONCILIATION OF RESERVE ACCOUNT - ------------------------------------ (A) Beginning Reserve Account Balance 7,375,549.52 (B) Less: Draw to pay Class A Interest Distribution 0.00 (C) Reserve Account Balance after draw 7,375,549.52 (D) Less: Draw to pay Class B Interest Distribution 0.00 (E) Reserve Account Balance after draw 7,375,549.52 (F) Less: Draw to pay Class A Principal Distribution 0.00 (G) Reserve Account Balance after draw 7,375,549.52 (H) Less: Draw to pay Class B Principal Distribution 0.00 (I) Reserve Account Balance after draw 7,375,549.52 (J) Total excess Collections deposited in the Reserve Fund 472,002.38 ------------------ (K) Reserve Fund Balance 7,847,551.90 (L) Specified Reserve Account Balance 7,028,987.71 (M) Reserve Account Release to Seller 818,564.18 ------------------ (N) Ending Reserve Account Balance 7,028,987.71 ================== J. NET LOSS AND DELINQUENCY ACCOUNT ACTIVITY - -------------------------------------------- (A) Liquidated Contracts (i) Liquidation Proceeds Related to Principal 224,391.05 (ii) Liquidation Proceeds Related to Interest 0.00 (iii) Recoveries on Previously Liquidated Contracts 224,391.05 (B) Realized Losses for Collection Period 478,175.05 (C) Charge-off Rate for Collection Period (annualized) 1.37% (D) Cumulative Net Losses for all Periods 2,733,986.77 (i) Adjustment for Charge Off Reversals (E) Delinquent Receivables Dollar Amount # Units ------------- -------- (i) 30-59 Days Delinquent 3,983,400 1.76% 462 (ii) 60-89 Days Delinquent 770,507 0.34% 87 (iii) 90 Days or More Delinquent 213,635 0.09% 27 7 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 K. TESTS FOR INCREASE IN SPECIFIED RESERVE ACCOUNT BALANCE - ---------------------------------------------------------- (A) Charge-off Rate (i) Second Preceding Collection Period 0.58% (ii) Preceding Collection Period 1.56% (iii) Current Collection Period 1.37% (iv) Three Month Average (Avg(i,ii,iii)) 1.17% (B) Delinquency Percentages (i) Second Preceding Collection Period 0.46% (ii) Preceding Collection Period 0.45% (iii) Current Collection Period 0.43% (iv) Three Month Average (Avg(i,ii,iii)) 0.45% (C) Loss and Delinquency Trigger Indicator Trigger was not hit 8 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 L. STATEMENT TO CERTIFICATEHOLDERS - ----------------------------------- Per $1,000 of Original Principal (A) Amount of distribution allocable to principal: Dollars ($) Balance ------------------ -------------------- (i) Class A Certificates 10,236,893.55 34.8835563 (ii) Class B Certificates 426,546.74 34.8835563 Per $1,000 of Original Principal (B) Amount of distribution allocable to interest: Dollars ($) Balance ------------------ -------------------- (i) Class A Certificates 1,189,164.46 4.0522337 (ii) Class B Certificates 50,684.35 4.1450330 (C) Pool Balance as of the close of business on the last day of the Collection Period $216,276,544.94 ------------------ Per $1,000 of (D) Amount of the Servicing Fee paid to the Servicer with respect to the Original Principal related Collection Period Dollars ($) Balance ------------------ -------------------- (i) Total Servicing Fee 189,116.65 (ii) Class A Percentage of the Servicing Fee 181,551.83 0.6186616 (ii) Class B Percentage of the Servicing Fee 7,564.83 0.6186616 Per $1,000 of Original Principal Dollars ($) Balance ------------------ -------------------- (E) (i) Class A Interest Carryover Shortfall 0.00 0.0000000 (ii) Class A Principal Carryover Shortfall 0.00 0.0000000 (iii) Class B Interest Carryover Shortfall 0.00 0.0000000 (iv) Class B Principal Carryover Shortfall 0.00 0.0000000 Change with respect to immediately preceding Distribution Date: (v) Class A Interest Carryover Shortfall 0.00 0.0000000 (vi) Class A Principal Carryover Shortfall 0.00 0.0000000 (vii) Class B Interest Carryover Shortfall 0.00 0.0000000 (viii) Class B Principal Carryover Shortfall 0.00 0.0000000 (F) Pool factors for each class of certificates, after giving effect to all payments allocated to principal Pool Factor -------------------- (i) Class A Pool Factor 0.7075104 (ii) Class B Pool Factor 0.7075104 (G) Amount of the aggregate Realized Losses, if any, for such Collection Period ($) $ 478,175.05 ------------------ (H) Aggregate principal balance of all Receivables which were more than 60 days delinquent as of the close of business on the last day of the preceding Collection Period $ 984,142.08 (I) Amount on deposit in the Reserve Fund on such Distribution Date, after giving effect to distributions made on such Distribution Date $ 7,028,987.71 ------------------ (J) Aggregate outstanding principal balances for each class of certificates, after giving effect to all payments allocated to principal Principal Balance -------------------- (i) Class A Principal Balance 207,625,298.01 (ii) Class B Principal Balance 8,651,246.93 (K) Amount otherwise distributable to the Class B Certificateholders that is being distributed to the Class A Certificateholders on such Distribution Date $ 0.00 (L) Aggregate Purchase Amount of Receivables repurchased by the Seller or purchased by the Servicer with respect to the Related Collection Period ($) $ 0.00 ------------------ 9 BANC ONE AUTO GRANTOR TRUST 1996-B DETERMINATION DATE STATEMENT COLLECTION PERIOD DECEMBER 1, 1996 THROUGH DECEMBER 31, 1996 DISTRIBUTION DATE JANUARY 15, 1997 M. INSTRUCTIONS TO THE TRUSTEE - ------------------------------ On the Distribution Date, make the following deposits and distributions: (A) Withdraw from the Collection Account and distribute to the Servicer: (i) Servicing Fee $ 189,116.65 (ii) Servicing Fees retained by the Seller 189,116.65 --------------- (iii) Servicing Fees to be distributed to the Seller on the Distribution Date (i-ii) $ 0.00 --------------- (B) Withdraw from the Collection Account and deposit in the Class A Distribution Account: (i) for the Class A Interest Distribution $1,189,164.46 (ii) for the Class A Principal Distribution 10,236,893.55 --------------- (iii) Total (i+ii) $11,426,058.01 --------------- (C) Withdraw from the Collection Account and deposit in the Class B Distribution Account: (i) for the Class B Interest Distribution $ 50,684.35 (ii) for the Class B Principal Distribution 426,546.74 --------------- (iii) Total (i+ii) $ 477,231.09 --------------- (D) Withdraw excess Collections from the Collection Account and deposit in the Reserve Fund $ 472,002.38 --------------- (E) Withdraw from the Reserve Fund and deposit in the Class A Distribution Account: (i) Amount equal to the excess of the Class A Interest Distribution over the sum of Interest Collections and the Class B Percentage of Principal Collections $ 0.00 (ii) Amount equal to the excess of the Class A Principal Distribution over the portion of Principal Collections and Interest Collections remaining after the distribution of the Class A Interest Distribution and the Class B Interest Distribution 0.00 --------------- (iii) Total $0.00 ----------- (F) Withdraw from the Reserve Fund and deposit in the Class B Distribution Account: (i) Amount equal to the excess of the Class B Interest Distribution over the portion of Interest Collections remaining after the distribution of the Class A Interest Distribution $ 0.00 (ii) Amount equal to the excess of the Class B Principal Distribution over the portion of Principal Collections and Interest Collections remaining after the distribution of the Class A Interest Distribution, the Class B Interest Distribution, and the Class A Principal Distribution 0.00 --------------- (iii) Total $0.00 -----------