How long will it take to pay off my student loans?

The calculator simulates your balance month by month: interest accrues on the remaining balance, your payment reduces it, and it counts the months until the balance reaches zero. It then shows both the number of months and the payoff date.

How much can extra payments save on student loans?

Extra payments go straight to principal, cutting both the payoff time and total interest. The tool compares your standard payment to a plan with an extra monthly amount and shows the dollars and months saved side by side.

How is total interest on a student loan calculated?

Each month interest equals the balance times the monthly rate (annual rate divided by 12). Summing that interest across every month until payoff gives your total interest paid — which extra payments reduce.

Student Loan Calculator — True Cost of Your Student Debt

See how extra payments can save you thousands

Quick Answer

The average US student loan balance is $37,650. On a standard 10-year repayment at 6.5% interest the monthly payment is $427 and total interest paid is $13,567. Income-driven repayment reduces monthly payments but can double total interest over 20-25 years. 43 million Americans carry student loan debt totaling $1.7 trillion.

Student loan calculators show the true total cost of education debt including all interest paid over the repayment period. They compare different repayment strategies — standard 10-year, extended, graduated and income-driven plans — to show total interest and monthly payments for each approach.

Built by Pierre — MBA, Business Strategist & AI Consultant, Founder of DayblipAbout the author →

Total Balance ($)Interest Rate (%)Monthly Payment ($)Extra Monthly Payment ($)

Standard Payments

Payoff DateApril 2035

Total Interest$12,565

Months119

With Extra Payment

Payoff DateOctober 2032

Total Interest$9,122

Months89

You save $3,444

and pay off 30 months sooner

📚 Income-Driven Repayment Plans

SAVE Plan: Caps payments at 5% of discretionary income for undergrad loans. Forgiveness after 10–20 years.
PAYE: 10% of discretionary income. Forgiveness after 20 years.
IBR: 10–15% of discretionary income depending on when you borrowed. 20–25 year forgiveness.
ICR: 20% of discretionary income or fixed 12-year payment. 25-year forgiveness.
Visit studentaid.gov to apply and get official estimates.

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For educational purposes only. Not financial advice. Loan terms vary. Visit studentaid.gov for official information.

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Frequently Asked Questions

Standard 10-year repayment minimizes total interest paid. Income-driven plans cap payments at 5 to 20 percent of discretionary income and offer forgiveness after 10 to 25 years. If pursuing Public Service Loan Forgiveness an income-driven plan is required.

Subsidized loans do not accrue interest while you are enrolled at least half-time, during the grace period, or during deferment. Unsubsidized loans accrue interest from disbursement — unpaid interest capitalizes and increases your principal balance.

If your loan rate is above 6 to 7 percent, accelerating payoff often beats investing in taxable accounts. If your rate is below 5 percent, investing may produce better long-term returns. Federal loans below 4 percent are generally worth carrying while investing in retirement accounts first.

Capitalization is when unpaid interest is added to your loan principal. This increases the balance on which future interest is calculated. It commonly occurs after the grace period ends, when leaving deferment or forbearance, and when switching repayment plans.