Exhibit 99.14 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS August 31, 1997 Expected B Maturity 4/17/06 Blended Coupon 5.9538% Excess Protection Level 3 Month Average 4.56% August, 1997 4.47% July, 1997 4.43% June, 1997 4.78% Cash Yield 17.46% Investor Charge Offs 4.84% Base Rate 8.15% Over 35 Day Delinquency 4.66% Seller's Interest 14.91% Total Payment Rate 12.37% Total Principal Balance $30,603,901,306.35 Investor Participation Amount $500,000,000.00 Seller Participation Amount $4,563,766,787.86