Exhibit 99.13 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS January 31, 1998 Expected B Maturity 4/17/06 Blended Coupon 5.8990% Excess Protection Level 3 Month Average 4.86% January, 1998 4.65% December, 1997 5.12% November, 1997 4.82% Cash Yield 17.84% Investor Charge Offs 4.71% Base Rate 8.49% Over 35 Day Delinquency 4.85% Seller's Interest 16.09% Total Payment Rate 13.52% Total Principal Balance $34,907,536,752.65 Investor Participation Amount $500,000,000.00 Seller Participation Amount $5,616,202,234.16