Exhibit 99.21 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-K KEY PERFORMANCE FACTORS November 30, 1996 Expected B Maturity 11/17/03 Blended Coupon 5.5567% Excess Protection Level 3 Month Average 2.97% November, 1996 2.97% October, 1996 N/A September, 1996 N/A Cash Yield 17.01% Investor Charge Offs 4.12% Base Rate 9.92% Over 35 Day Delinquency 4.38% Seller's Interest 15.65% Total Payment Rate 11.72% Total Principal Balance $22,372,660,639.66 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $3,500,733,121.17