The Loan & Mortgage Calculator
What a loan costs per period, how much of it is interest, and how the balance falls year by year.
Your loan
Everything is worked out in your browser. No figure is sent anywhere.
How to work out a loan payment
- Enter the amount you are borrowing and the yearly interest rate.
- Set the term in years and how often you pay.
- Read the payment, the total interest and the year by year table below.
Frequently asked questions
How is the payment calculated?
With the standard annuity formula: payment = principal × r / (1 - (1 + r)^-n), where r is the rate per period and n the number of payments. Every payment is the same size and covers the interest first.
Why does the total interest look so high?
Because interest is charged on the balance for the whole term. On a long mortgage the interest can approach or exceed the amount borrowed; shortening the term or paying more per period cuts it sharply.
Does it include fees or insurance?
No. Arrangement fees, insurance and taxes vary by country and lender, so the calculator sticks to the repayment math. Add them separately when you compare offers.
Is this financial advice?
No. It is arithmetic to help you compare, not a recommendation. Always check the lender's own figures before signing anything.
More free tools: Invoices · Savings · Percentage · Discount · Margin · VAT · Income tax · Salary