Interest Rates and Letter of Credit Fee Rates Payments and Calculations (a) Interest Rates. Except as provided in Section 2.13(c) and Section 2.15(a), all Obligations (except for the undrawn portion of the face amount of Letters of Credit) that have been charged to the Loan Account pursuant to the terms hereof shall bear interest at a per annum rate equal to the lesser of (i) the LIBOR Rate plus the Applicable Margin, or (ii) the maximum rate of interest allowed by applicable laws; provided, that following notice to Borrower in accordance with Section 2.15(a) hereof, all Obligations that have been charged to the Loan Account pursuant to the terms hereof shall bear interest at a per annum rate equal, during the duration of the circumstances described in Section 2.15(a), to the lesser of (A) the Base Rate plus the Applicable Margin as calculated pursuant to Section 2.15(a) or (B) the maximum rate of interest allowable by applicable laws.