Exhibit 99.51 MBNA MASTER CREDIT CARD TRUST II SERIES 2000-K KEY PERFORMANCE FACTORS December 31, 2000 Expected B Maturity 10/17/2005 Blended Coupon 6.9262% Excess Protection Level 3 Month Average 0.00% December, 2000 0.00% November, 2000 N/A October, 2000 N/A Cash Yield19.25% Investor Charge Offs 8.18% Base Rate11.70% Over 30 Day Delinquency 4.72% Seller's Interest10.47% Total Payment Rate13.35% Total Principal Balance$57,190,978,436.47 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,990,287,874.98 For purposes of calculating the Base Rate and Excess Protection Level, a Coupon of 9.70% (40/360) was used. The Base Rate was calculated using a 40 day monthly period, 11/21/00 to 12/31/00.