Exhibit 99.13 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-A KEY PERFORMANCE FACTORS July 31, 1997 Expected B Maturity 3/17/03 Blended Coupon 5.9154% Excess Protection Level 3 Month Average 4.59% July, 1997 4.50% June, 1997 4.84% May, 1997 4.43% Cash Yield 17.53% Investor Charge Offs 4.92% Base Rate 8.11% Over 35 Day Delinquency 4.47% Seller's Interest 18.18% Total Payment Rate 14.22% Total Principal Balance $30,179,392,749.44 Investor Participation Amount $700,000,000.00 Seller Participation Amount $5,486,155,230.95