Exhibit 99.26 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-F KEY PERFORMANCE FACTORS May 31, 2001 Expected B Maturity 9/15/05 Blended Coupon 5.2460% Excess Protection Level 3 Month Average 7.56% May, 2001 6.85% April, 2001 7.57% March, 2001 8.27% Cash Yield19.70% Investor Charge Offs 5.45% Base Rate 7.40% Over 30 Day Delinquency 4.84% Seller's Interest 8.52% Total Payment Rate14.20% Total Principal Balance$58,203,705,030.43 Investor Participation Amount$500,000,000.00 Seller Participation Amount$4,958,014,468.94