Exhibit 99.31 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-J KEY PERFORMANCE FACTORS December 31, 2000 Expected B Maturity 9/15/03 Blended Coupon 5.4367% Excess Protection Level 3 Month Average 5.91% December, 2000 2.23% November, 2000 7.85% October, 2000 7.65% Cash Yield19.79% Investor Charge Offs10.15% Base Rate 7.42% Over 30 Day Delinquency 4.72% Seller's Interest10.47% Total Payment Rate13.35% Total Principal Balance$57,190,978,436.47 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,990,287,874.98