Exhibit 99.41 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-J KEY PERFORMANCE FACTORS October 31, 2000 Expected B Maturity 09/15/2009 Blended Coupon 7.0937% Excess Protection Level 3 Month Average 5.72% October, 2000 6.14% September, 2000 5.60% August, 2000 5.44% Cash Yield19.62% Investor Charge Offs 4.51% Base Rate 8.97% 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$1,000,000,000.00 Seller Participation Amount$6,009,277,457.50