How the Student Loan Payoff Calculator works
Estimate how quickly student loans can be paid off. Adjust the inputs above, then use the calculate button to generate a fresh estimate based on the numbers you entered.
The result is designed to give you a quick planning number, plus a short breakdown of the major figures behind it. You can reset the form at any time and try a different scenario.
When to use this calculator
Use this student loan payoff calculator when you want to estimate how long it may take to clear student debt at a specific monthly payment. It is useful for testing extra payments and seeing how interest affects the payoff timeline.
Formula
New balance = balance + monthly interest - monthly payment
- Balance is the student loan amount still owed.
- Monthly interest is based on the annual rate divided by 12.
- Payment is applied each month until the balance reaches zero.
Worked example
For a $28,000 student loan at 6.5% with a $350 monthly payment, the calculator estimates payoff time and total interest.
Common mistakes
- Using a payment that does not cover enough interest and principal.
- Ignoring multiple loans with different rates.
- Forgetting to check whether extra payments are applied to principal.
FAQs
Will paying extra help?
Usually yes. Extra payments can reduce principal faster and lower total interest.
Should I combine all student loans?
Only combine them if the rate, benefits and repayment rules still make sense for you.
Does this include income-based repayment?
No. It assumes a fixed monthly payment.