The Master Promissory Note (MPN) is a legal document in which you promise to repay your loan(s) and any accrued interest and fees to the U.S. Department of Education. It also explains the terms and conditions of your loan(s). All first-time student and parent borrowers of federal Direct student loans, and borrowers whose previous MPN has expired, must complete the MPN before loan funds can be disbursed to your student account.