- Remaining balance
- Principal repaid
- Interest paid
Enter valid numbers: a loan amount above 0, an interest rate from 0% to 50% and a term from 1 month to 50 years.
| Period | Date | Payment | Interest | Principal | Remaining balance |
|---|
Mortgage calculator
See what a mortgage or loan really costs. Enter how much you borrow, the interest rate and the term, pick a repayment type, and the calculator shows your monthly payment, the total interest, the payoff date and how the balance falls month by month. Enter the loan amount, the interest rate and the term, and choose how you repay: annuity (the same payment every month), linear (the same repayment every month, so payments fall) or interest-only. The chart shows the remaining balance and how much of what you pay goes to interest and to principal. No country-specific tax rules, tax relief, fees or insurance are included.
How it works
- Enter the loan amount, the interest rate per year and the term in years and months.
- Choose annuity, linear or interest-only, and add an optional extra monthly repayment and start date.
- Read the result, switch the table between months and years, then copy it, download it as CSV or save the chart as an image.
What the chart shows
The line is the remaining balance of the loan. The two bands below it add up everything you have paid so far: the lower band is principal, the part that actually reduces the debt, and the upper band is interest. With an annuity the interest band grows quickly at first and flattens later, because early payments are mostly interest. Hover over the chart to see the figures for each year.
How the calculation works
The calculator works month by month. Interest for a month is the remaining balance times the yearly rate divided by 12. With an annuity the payment is fixed, so what is left after interest repays principal. With linear repayment the principal part is the loan divided by the number of months, and interest comes on top. With interest-only you pay just interest and the full balance is due at the end. Extra repayments lower the balance straight away. Taxes, tax relief and other country-specific rules are not included.
Frequently asked questions
Are taxes or tax relief included?
No. The calculator shows the gross figures for the loan only. Tax relief on mortgage interest, insurance, fees and other country-specific rules differ by country and are not included, so check them with your lender or adviser.
Which is cheaper, annuity or linear?
With the same amount, rate and term, linear costs less interest in total, because you repay principal faster at the start. The trade-off is higher payments in the early years. Switch the type in the calculator to compare both.
What does an extra monthly repayment do?
It goes straight to principal, so the balance falls faster, less interest builds up and the loan ends sooner. The calculator shows how many months and how much interest you save compared with no extra repayment. Check whether your lender allows extra repayments without a fee.
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