Exhibit 99.14 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-B KEY PERFORMANCE FACTORS June 30, 1997 Expected B Maturity 4/17/06 Blended Coupon 5.9885% Excess Protection Level 3 Month Average 4.27% June, 1997 4.78% May, 1997 4.36% April, 1997 3.69% Cash Yield 17.16% Investor Charge Offs 4.60% Base Rate 7.79% Over 35 Day Delinquency 4.57% Seller's Interest 10.08% Total Payment Rate 12.14% Total Principal Balance $27,184,721,330.37 Investor Participation Amount $500,000,000.00 Seller Participation Amount $2,741,483,811.88