Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-H KEY PERFORMANCE FACTORS MARCH, 1999 Expected B Maturity 09/17/01 Blended Coupon 5.1383% Excess Protection Level 3 Month Average 6.09% March, 1999 6.73% February, 1999 6.06% January, 1999 5.46% Cash Yield 19.20% Investor Charge Offs 5.12% Base Rate 7.34% Over 35 Day Delinquency 4.94% Seller's Interest 6.34% Total Payment Rate 14.77% Total Principal Balance $ 40,628,355,078.94 Investor Participation Amount $ 1,200,000,000.00 Seller Participation Amount $ 2,576,435,560.45