Exhibit 99.41 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-M KEY PERFORMANCE FACTORS January 31, 2001 Expected B Maturity 11/15/2004 Blended Coupon 6.6788% Excess Protection Level 3 Month Average 4.58% January, 2001 6.85% December, 2000 0.39% November, 2000 6.48% Cash Yield19.75% Investor Charge Offs 4.73% Base Rate 8.17% Over 30 Day Delinquency 4.88% Seller's Interest11.58% Total Payment Rate14.47% Total Principal Balance$57,905,967,832.59 Investor Participation Amount$500,000,000.00 Seller Participation Amount$6,705,277,271.10