Exhibit 99.13 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS October 31, 1998 Expected B Maturity 4/17/06 Blended Coupon 5.7123% Excess Protection Level 3 Month Average 5.46% October, 1998 5.86% September, 1998 4.27% August, 1998 6.24% Cash Yield 18.93% Investor Charge Offs 4.98% Base Rate 8.09% Over 35 Day Delinquency 5.16% Seller's Interest 8.67% Total Payment Rate 14.28% Total Principal Balance $39,561,435,127.71 Investor Participation Amount $500,000,000.00 Seller Participation Amount $3,431,640,609.22