Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-K KEY PERFORMANCE FACTORS February 29, 2000 Expected B Maturity 11/17/03 Blended Coupon 6.0670% Excess Protection Level 3 Month Average 5.40% February, 2000 6.19% January, 2000 5.40% December, 1999 4.62% Cash Yield 18.80% Investor Charge Offs 4.75% Base Rate 7.86% Over 30 Day Delinquency 5.01% Seller's Interest 9.54% Total Payment Rate 14.30% Total Principal Balance $48,263,301,515.80 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $4,604,500,997.31