Exhibit 99.40 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-I KEY PERFORMANCE FACTORS October 31, 2000 Expected B Maturity 08/15/2002 Blended Coupon 6.4825% Excess Protection Level 3 Month Average 5.89% October, 2000 6.31% September, 2000 5.76% August, 2000 5.60% Cash Yield19.62% Investor Charge Offs 4.51% Base Rate 8.80% Over 30 Day Delinquency 5.23% Seller's Interest10.66% Total Payment Rate14.07% Total Principal Balance$56,359,968,018.99 Investor Participation Amount$750,000,000.00 Seller Participation Amount$6,009,277,457.50