Exhibit 99.23 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-L KEY PERFORMANCE FACTORS JUNE, 1998 Expected B Maturity 12/15/99 Blended Coupon 5.7681% Excess Protection Level 3 Month Average 5.28% June, 1998 4.79% May, 1998 5.00% April, 1998 6.03% Cash Yield 17.69% Investor Charge Offs 5.10% Base Rate 7.80% Over 35 Day Delinquency 5.06% Seller's Interest 12.61% Total Payment Rate 13.35% Total Principal Balance $ 35,974,950,178.51 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 4,536,555,660.02