Why the payment amount matters so much
Student loan interest accrues on your balance the same way a mortgage or car loan does — part of every payment covers that month's interest, and only the rest reduces what you owe. A payment close to the interest-only amount barely moves the balance; a modest increase above that can dramatically shorten the payoff time because more of every payment compounds toward principal.
Comparing strategies
If you're weighing which debt to attack first alongside credit cards or other loans, the Debt Payoff Calculator compares the snowball and avalanche methods across everything you owe, not just one loan.
Frequently asked questions
How long will it take to pay off my student loans?
It depends on your balance, interest rate and monthly payment. Enter your numbers here to see the exact payoff time and total interest — increasing the payment even slightly can cut years off, since student loan rates compound the same way any other loan does.
Should I pay extra toward my student loans or invest instead?
Compare your loan's interest rate to the return you could realistically earn investing. A high-rate private loan is often worth paying off aggressively; a low-rate federal loan may be a closer call, especially if you get an employer 401(k) match first.
Does this account for income-driven repayment or forgiveness?
No — this is a standard fixed-payment amortization estimate. Income-driven repayment plans and forgiveness programs (like PSLF) follow different rules based on your income and employer, so check your loan servicer or official program details for those scenarios.
I have multiple student loans — how do I use this?
Combine them into one blended balance and a weighted-average rate for a quick estimate, or use the Debt Payoff Calculator to compare snowball vs avalanche strategies across multiple separate loans.
Last updated: June 2026