# Student Loan Calculator

Calculate your student loan monthly payment, total interest, and payoff timeline. See how extra payments save money. Free student loan calculator.

## What this calculates

Calculate your student loan payment and see how different repayment strategies affect your total cost. Enter your loan balance, interest rate, and term to explore standard and accelerated payoff options.

## Inputs

- **Total Loan Balance** ($) — min 0 — Total amount of student loan debt.
- **Interest Rate** (%) — min 0, max 15 — Annual interest rate on your student loan.
- **Repayment Term** — options: 5 years, 10 years (standard), 15 years, 20 years (extended), 25 years (income-driven) — Length of the repayment period.
- **Extra Monthly Payment** ($) — min 0 — Additional amount above minimum payment.

## Outputs

- **Monthly Payment** — formatted as currency — Standard monthly payment amount.
- **Total Interest Paid** — formatted as currency — Total interest over the life of the loan.
- **Total Amount Paid** — formatted as currency — Total of all payments (principal + interest).
- **Payoff Time with Extra Payments** — formatted as text — Actual payoff time if making extra payments.
- **Interest Saved with Extra Payments** — formatted as currency — How much you save by making extra payments.

## Details

Student loan debt is one of the largest financial obligations for many Americans, with average balances around $30,000-$40,000 for bachelor's degree graduates. Understanding your repayment options is crucial for managing this debt effectively.

The standard federal repayment plan is 10 years with fixed monthly payments. Extended plans stretch payments to 20-25 years, lowering monthly amounts but dramatically increasing total interest. Income-driven plans cap payments at a percentage of discretionary income and offer forgiveness after 20-25 years.

Making extra payments can save thousands in interest. On a $35,000 loan at 5.5% over 10 years, paying just $100 extra per month saves about $2,800 in interest and pays off the loan 2.5 years early. There is no prepayment penalty on federal student loans, and extra payments are applied first to accrued interest and then to principal.

## Frequently Asked Questions

**Q: What is the average student loan interest rate?**

A: Federal student loan interest rates are set by Congress and vary by loan type and year. For 2024, undergraduate Direct Loans have a rate of about 5.50%, graduate Direct Loans about 7.05%, and Parent/Grad PLUS loans about 8.05%. Private student loan rates vary by lender and credit score, ranging from about 4% to 16%. Fixed rates provide payment certainty, while variable rates may start lower but can increase over time.

**Q: What is an income-driven repayment plan?**

A: Income-driven repayment (IDR) plans cap monthly payments at a percentage of discretionary income (typically 10-20%) and extend the repayment period to 20-25 years. After the repayment period, remaining balances are forgiven (though forgiveness may be taxable). IDR plans include SAVE, PAYE, IBR, and ICR. These plans are available for federal loans and are especially helpful for borrowers with high debt relative to income. The trade-off is paying more total interest over the longer term.

**Q: Should I refinance my student loans?**

A: Refinancing replaces one or more loans with a new private loan at a potentially lower rate. It makes sense if you have good credit, stable income, and can get a significantly lower rate. However, refinancing federal loans into private loans means losing access to federal benefits: income-driven repayment, Public Service Loan Forgiveness, and deferment options. Only refinance federal loans if you are confident you will not need these protections.

**Q: What is Public Service Loan Forgiveness (PSLF)?**

A: PSLF forgives remaining federal loan balances after 120 qualifying payments (10 years) while working full-time for a qualifying employer (government agencies, nonprofits, and some other organizations). Payments must be made under an income-driven repayment plan. The forgiven amount is not taxable. This program can save significant money for borrowers with high balances working in public service. Careful documentation and using the PSLF Help Tool are essential.

**Q: Is it worth paying off student loans early?**

A: Paying off student loans early saves on interest and frees up cash flow for other goals. It is usually worth it for high-interest loans (above 6-7%). However, if your rate is low, you might earn more by investing extra money in the stock market instead. Also consider whether you might qualify for forgiveness programs before accelerating payments. A balanced approach might be to make extra payments on high-interest loans while investing in tax-advantaged retirement accounts.

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Source: https://vastcalc.com/calculators/finance/student-loan
Category: Finance
Last updated: 2026-04-21