Exhibit 99.11 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS October 31, 1999 Expected B Maturity 4/17/06 Blended Coupon 5.7115% Excess Protection Level 3 Month Average 5.87% October, 1999 6.03% September, 1999 5.71% August, 1999 5.86% Cash Yield 18.61% Investor Charge Offs 4.68% Base Rate 7.90% Over 30 Day Delinquency 5.07% Seller's Interest 9.14% Total Payment Rate 14.64% Total Principal Balance $47,636,626,081.62 Investor Participation Amount $500,000,000.00 Seller Participation Amount $4,354,806,563.13