Loan Overpayment Calculator
Compare loan payoff time and interest with and without extra payments.
Quick answer: enter your details below and click Compare Overpayment — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Enter your numbers.
- Check that each figure looks right.
- Click Compare Overpayment and read the result.
About this tool
It runs a simple month-by-month payoff simulation twice, once with your normal payment and once with the extra amount added, and shows the months and interest saved. All figures here are estimates: check current rules and rates before acting on them.
Frequently asked questions
Are these figures exact?
No. They are estimates based on the numbers you enter. Rules, rates, and charges change, so check current rules before making a financial decision.
What should I do with this estimate?
Use it to compare options and plan your next step, then confirm the final figure with the provider, lender, or adviser involved before committing money.