Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-H KEY PERFORMANCE FACTORS AUGUST, 1999 Expected B Maturity 09/17/01 Blended Coupon 5.5806% Excess Protection Level 3 Month Average 5.79% August, 1999 5.82% July, 1999 6.30% June, 1999 5.25% Cash Yield 18.20% Investor Charge Offs 4.78% Base Rate 7.61% Over 30 Day Delinquency 4.81% Seller's Interest 7.19% Total Payment Rate 14.37% Total Principal Balance $ 46,158,397,644.87 Investor Participation Amount $ 1,200,000,000.00 Seller Participation Amount $ 3,316,578,126.38