High-Interest Student Loan at 8% — Payoff Calculator
Calculate how long it takes to pay off a $40,000 student loan with an 8% interest rate and $400 monthly payments.
How to use this tool
- Enter your current loan balance.
- Enter the annual interest rate (APR).
- Enter a fixed monthly payment.
- Read the months to payoff, total paid, and total interest. A bigger payment shortens both.
High-interest student loans accumulate interest quickly — see how long it really takes to pay them off.
Frequently asked questions
- Why is total paid slightly higher than my real payoff?
- We report payment × months, but the final month's payment is usually partial. The true total is a few dollars lower; this convention keeps the interest figure conservative and easy to check.
- What if my payment doesn't cover the interest?
- If your monthly payment is at or below the monthly interest, the balance never falls and the loan never amortizes. The calculator flags this instead of returning a payoff time.
- Does this include loan forgiveness or income-driven plans?
- No. It models a fixed payment on a standard amortizing loan. Income-driven repayment, forgiveness, and interest capitalization can change the real outcome — check studentaid.gov.