service job, 30 percent of the total amount due on the eligible Federal Direct Loan on the date the borrower commenced employment in such public service job. (C) Employment certification form (i) In general In order to receive loan cancellation under this paragraph, a borrower shall submit to the Secretary an employment certification form that is developed by the Secretary and includes self-certification of employment and a separate part for employer certification that indicates the dates of employment. (ii) Deferment If a borrower submits to the Secretary the employment certification form described in clause (i), during the period in which the borrower is employed in a public service job for which loan cancellation is eligible under this paragraph, the borrower's eligible Federal Direct Loan shall be placed in deferment. (D) Interest canceled If a portion of a loan is canceled under this paragraph for any year, the entire amount of interest on such loan that accrues for such year shall be canceled. .