Student loan payoff calculator

Time to clear your student loans

Total10 yr 7 mo
Total interest paid
$12,141
Payoff with $100 extra
7 yr 7 mo
Interest saved by the extra
$4,049
Months saved
36 mo
Time to clear your student loans
10 yr 7 mo

Student loans on top of other debt?

Get a free review of the whole picture so the loan payment does not quietly eat everything else.

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The short answer

Enter your balance, interest rate and monthly payment to see how long the loans take to clear and what they cost in interest. Add an extra amount per month and the calculator shows the months and the interest that extra payment removes.

Why the extra payment does so much

Every extra dollar goes straight at the principal, so the interest charged next month is smaller. That saving then compounds across every remaining month of the loan, which is why $100 a month can remove years from a payoff date.

Before you overpay

  • Tell the servicer to apply extra money to principal, not to prepay next month's bill.

  • Target the highest-rate loan first when your loans sit in separate accounts.

  • Keep a small cash buffer so an emergency does not push you back onto a credit card.

  • Check whether you are pursuing a forgiveness programme before overpaying at all.

What the estimate leaves out

It assumes one fixed rate and one fixed payment. It does not model income-driven plans, forgiveness, interest subsidies during deferment, refinancing or capitalised interest.

The formula

Each month: interest = balance x rate / 12; balance = balance + interest - payment. Repeat until the balance reaches zero.

FAQ

Compare strategies with the debt payoff calculator

The debt snowball method directs additional money to the smallest balance while maintaining required payments on every other debt. After one balance is paid, its payment moves to the next balance. The debt avalanche instead targets the highest interest rate first. If all payments and rates remain the same, the avalanche generally minimizes interest, while the snowball organizes repayment around completing smaller balances sooner.

Enter each balance, annual interest rate, minimum payment, and any additional monthly amount. A credit card payoff calculator may produce different results if a card uses variable rates, daily interest, fees, or promotional terms. Confirm whether a loan payoff calculator assumes payments occur monthly and whether additional amounts are applied directly to principal. Continue making at least required payments on time, regardless of the payoff order selected.

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