Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS August 31, 1999 Expected B Maturity 9/15/99 Blended Coupon 5.6995% Excess Protection Level 3 Month Average 60.81% August, 1999 171.30% July, 1999 5.97% June, 1999 5.16% Cash Yield 242.71% Investor Charge Offs 63.71% Base Rate 7.70% 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 $ 57,000,000.00 Seller Participation Amount $ 3,316,578,126.38