Loan calculator
Monthly payment, total interest and a full repayment schedule
Files are processed on your device and are never sent to a server.
How to use this calculator
Enter the amount, the interest rate and the term, and the monthly payment appears as you type. Below it you get the total you will repay, the total interest, and the full schedule showing how each payment splits between interest and principal.
The balance chart is worth a look before you sign anything. On a long loan the early payments are mostly interest, and seeing that on screen tends to be more persuasive than reading it.
The number to look at is the total, not the monthly payment
Stretching a loan over a longer term lowers the monthly payment and raises the total cost, sometimes considerably. A payment that feels comfortable can hide several thousand in extra interest. Both numbers are shown here with equal weight for that reason.
Equal payments or falling payments
Two repayment types are offered because both are ordinary here. An annuity loan keeps every payment the same. A linear loan repays the same amount of principal each period, so payments start higher and fall over the term — it costs less in interest overall but asks more of you at the start.
Lenders in some markets offer the second as the default and in others barely mention it. If your bank offers both, this is a way to compare them side by side.
What overpaying does
Set a regular overpayment and the calculator shows the same loan with and without it — how many months come off the term, and how much interest disappears. Because overpayments early on cancel interest that would have accrued for years, the timing matters as much as the amount.
Check your loan agreement before relying on it. Some lenders limit overpayments or charge a fee for them, and that is not something this page can know.
Why it runs in your browser
What you earn and what you owe are private. The calculation happens on your own device and nothing is uploaded, so there is no account, no server holding your figures, and nothing to delete afterwards. This is arithmetic, not advice, and no judgement is made here about whether a loan is affordable.
Is this the APR my lender quotes?
No. This uses the nominal interest rate you enter. The figure a lender must advertise — APRC in the EU, APR elsewhere — also includes fees, insurance and other charges, so it is normally higher than the rate used here. Compare offers using the lender's own figure, not this one.
Why is the last payment slightly different?
Because each payment is rounded to the cent, tiny differences build up over the term. Real lenders adjust the final payment to settle the balance exactly, and the schedule here does the same.
What is the difference between equal payments and falling payments?
With an annuity loan every payment is the same size, and the split between interest and principal shifts over time. With a linear loan you repay the same amount of principal each time, so payments start higher and fall. A linear loan costs less in total interest but demands more at the beginning.
Does overpaying really save that much?
It depends on how early you do it. Overpayments early in the term remove interest that would have been charged for years afterwards, so the same amount paid in year two saves considerably more than in year ten. The comparison on this page shows both the interest saved and the time saved.