Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-A KEY PERFORMANCE FACTORS July 31, 2000 Expected B Maturity 3/17/03 Blended Coupon 6.7807% Excess Protection Level 3 Month Average 5.58% July, 2000 6.06% June, 2000 4.97% May, 2000 5.70% Cash Yield19.22% Investor Charge Offs 4.57% Base Rate 8.59% Over 30 Day Delinquency 4.81% Seller's Interest11.87% Total Payment Rate14.13% Total Principal Balance$55,010,319,976.67 Investor Participation Amount$750,000,000.00 Seller Participation Amount$6,529,119,458.18