Exhibit 99.15 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS MARCH, 2001 Expected B Maturity 12/15/06 Blended Coupon 5.5658% Excess Protection Level 3 Month Average 7.25% March, 2001 7.94% February, 2001 7.64% January, 2001 6.15% Cash Yield 20.69% Investor Charge Offs 4.83% Base Rate 7.91% Over 30 Day Delinquency 4.90% Seller's Interest 7.37% Total Payment Rate 14.60% Total Principal Balance $ 56,622,749,044.91 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 4,172,058,483.42