Because of these factors, you may fully repay your loan before the end of your repayment period. (studentaid.ed.gov)
In addition, under current Internal Revenue Service rules, you may be required to pay income tax on any amount that's forgiven if you still have a remaining balance at the end of your repayment period. (studentaid.ed.gov)
Whether you will have a balance left to be forgiven at the end of your repayment period depends on a number of factors, such as how quickly your income rises and how large your income is relative to your debt. (studentaid.ed.gov)