Exhibit 99.30 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-D KEY PERFORMANCE FACTORS June 30, 2000 Expected B Maturity 7/15/03 Blended Coupon 5.9203% Excess Protection Level 3 Month Average 5.56% June, 2000 5.15% May, 2000 5.92% April, 2000 5.61% Cash Yield18.75% Investor Charge Offs 4.56% Base Rate 9.04% Over 30 Day Delinquency 4.60% Seller's Interest12.05% Total Payment Rate14.03% Total Principal Balance$54,839,173,315.51 Investor Participation Amount$559,000,000.00 Seller Participation Amount$6,607,972,797.02