Exhibit 99.13 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-A KEY PERFORMANCE FACTORS April 30, 1997 Expected B Maturity 3/17/03 Blended Coupon 5.9255% Excess Protection Level 3 Month Average 4.99% April, 1997 3.75% March, 1997 5.85% February, 1997 5.38% Cash Yield 16.23% Investor Charge Offs 4.55% Base Rate 7.93% Over 35 Day Delinquency 4.27% Seller's Interest 20.02% Total Payment Rate 12.21% Total Principal Balance $27,182,850,184.68 Investor Participation Amount $700,000,000.00 Seller Participation Amount $5,443,222,666.19