Student Loan Payoff Calculator

See how extra payments can cut years off your student loans and save thousands in interest.

Updated for 2026 · Uses current interest rate data

Your numbers

Total amount you still owe
Your loan's annual interest rate
Standard repayment period (typically 10 years)
Additional amount paid each month (optional)
Payoff time with extra payments
Original payoff time
Time saved
Interest (standard plan)
Interest (with extra)
Interest saved
This calculator assumes a standard 10-year repayment plan with fixed monthly payments. Federal loans offer income-driven repayment plans that may change your payment amount. This calculator doesn't account for forbearance, deferment, or forgiveness programs. Not financial advice.

How Extra Student Loan Payments Work

Federal student loans have no prepayment penalties. When you make extra payments, that money goes directly to principal, reducing the amount on which interest accrues. Even $50-100 extra per month can save thousands in total interest and shorten your repayment by years. This is especially powerful early in repayment when interest makes up a larger portion of your payment.

Understanding Student Loan Repayment Options

Federal loans offer five repayment plans: Standard (10 years), Graduated, Extended, and income-driven options (PAYE, REPAYE, IBR, ICR). Income-driven plans tie payments to your discretionary income, potentially lowering monthly costs but extending repayment. Private loans typically only offer Standard or Extended repayment. This calculator uses the Standard plan; adjust inputs if you're on a different plan.

Refinancing vs. Extra Payments

Refinancing means taking a private loan to pay off federal loans, typically at a lower rate. It can save interest but you lose federal protections (forbearance, income-driven repayment, public service forgiveness). Only refinance if you have stable income and don't need these protections. For most borrowers, making extra payments on federal loans is safer and still saves substantial interest.

Student Loan Payoff Strategies

If you have multiple loans, the debt avalanche method (highest rate first) mathematically saves the most interest. If you qualify for Public Service Loan Forgiveness (PSLF) after 120 payments, paying extra makes no sense—better to invest the money. Consider your total financial picture: retirement savings, emergency fund, and other debt should be prioritized alongside aggressive loan payoff.

FAQ

Are there prepayment penalties on student loans?

Federal student loans have no prepayment penalties. You can pay extra any time without penalty. Private loans vary—check your promissory note.

What's the difference between federal and private student loans?

Federal loans offer income-driven repayment plans, deferment, forbearance, and public service loan forgiveness. Private loans typically have fixed terms and no federal protections.

Should I refinance my student loans?

Refinancing can lower your rate if your credit has improved, but you'll lose federal loan protections. Only refinance private loans or if you're confident in your income stability.

Is paying off student loans faster always the best strategy?

Not always. If your rate is very low (under 4%), investing the extra money might yield better returns. If you qualify for forgiveness programs, accelerating payments may not make sense. Consider your overall financial goals.

Can I make extra payments without contacting my lender?

Most servicers automatically apply extra payments to principal if you specify this when making the payment. Always confirm your payment goes to principal, not future payments.