Exhibit 99.26 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-K KEY PERFORMANCE FACTORS January 31, 2000 Expected B Maturity 11/15/05 Blended Coupon 5.9582% Excess Protection Level 3 Month Average 5.29% January, 2000 5.40% December, 1999 4.63% November, 1999 5.83% Cash Yield 17.74% Investor Charge Offs 4.73% Base Rate 7.61% Over 30 Day Delinquency 5.03% Seller's Interest 9.78% Total Payment Rate 14.21% Total Principal Balance $49,077,414,912.07 Investor Participation Amount $750,000,000.00 Seller Participation Amount $4,800,914,393.58