Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-H KEY PERFORMANCE FACTORS DECEMBER, 1998 Expected B Maturity 09/17/01 Blended Coupon 5.5557% Excess Protection Level 3 Month Average 5.83% December, 1998 6.02% November, 1998 5.63% October, 1998 5.83% Cash Yield 18.74% Investor Charge Offs 4.98% Base Rate 7.74% Over 35 Day Delinquency 4.96% Seller's Interest 10.83% Total Payment Rate 13.62% Total Principal Balance $ 41,270,703,888.09 Investor Participation Amount $ 1,200,000,000.00 Seller Participation Amount $ 4,468,784,369.60