Exhibit 99.20 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-K KEY PERFORMANCE FACTORS November 30, 1998 Expected B Maturity 11/17/03 Blended Coupon 5.4595% Excess Protection Level 3 Month Average 5.37% November, 1998 5.70% October, 1998 6.02% September, 1998 4.40% Cash Yield 17.96% Investor Charge Offs 4.96% Base Rate 7.31% Over 35 Day Delinquency 5.37% Seller's Interest 9.39% Total Payment Rate 13.51% Total Principal Balance $40,339,382,471.40 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $3,787,462,952.91