Exhibit 99.46 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-L KEY PERFORMANCE FACTORS November 30, 1999 Expected B Maturity 10/16/2006 Blended Coupon 5.7433% Excess Protection Level 3 Month Average 3.31% November, 1999 3.31% October, 1999 N/A September, 1999 N/A Cash Yield17.62% Investor Charge Offs 3.47% Base Rate10.84% Over 30 Day Delinquency 5.02% Seller's Interest 8.52% Total Payment Rate14.09% Total Principal Balance$48,461,894,441.68 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,130,074,923.19 For the purposes of calculating the Base Rate and Excess Protection Level a Coupon of 8.84% (26/360), and a monthly period of 26 days (11/5/99 - 11/30/99), was used.