Exhibit 99.12 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-A KEY PERFORMANCE FACTORS February 28, 1998 Expected B Maturity 3/17/03 Blended Coupon 5.8621% Excess Protection Level 3 Month Average 4.85% February, 1998 4.63% January, 1998 4.73% December, 1997 5.19% Cash Yield 16.74% Investor Charge Offs 4.83% Base Rate 7.28% Over 35 Day Delinquency 5.04% Seller's Interest 15.07% Total Payment Rate 12.54% Total Principal Balance $34,488,564,555.67 Investor Participation Amount $700,000,000.00 Seller Participation Amount $5,197,230,037.18