(A) Amount of credit For every eligible educator enrolled in an income contingent or income-based repayment plan (including plans under section 493C or section 455(d)(1)(D)), the Secretary shall apply a monthly credit for each month of covered service (including past covered service on or after the date of enactment of the EDUCATORS for America Act ) to the balance of interest and principal due on any covered loan for that eligible educator in an amount that, when added to the monthly payment required from the borrower, would be equal to the monthly payment amount that would repay the borrower’s original balance and accrued interest on the basis of a 10-year amortization schedule. (B) Covered service With respect to monthly credits described in subparagraph (A), covered service means full-time employment as an educator beginning on or after the date of enactment of the EDUCATORS for America Act . (2) Prevention of double benefits No borrower may, for the same voluntary service, receive a benefit under both this section and— (A) section 428K