UK Mortgage Repayment Calculator
This mortgage repayment calculator helps you estimate how much your mortgage could cost over time based on your remaining mortgage balance or expected borrowing, interest rate and remaining term. It is useful both before buying a property and after purchase when you want to model your current mortgage.
What this mortgage calculator includes
- Current mortgage balance or planned borrowing amount
- Years and months remaining
- Repayment and interest-only options
- Monthly, weekly, fortnightly and four-weekly payment views
- Mortgage fee handling, including adding fees to the loan
- Optional property price for loan-to-value (LTV)
- Total interest and total paid
- Amortisation schedule
How to use the mortgage repayment calculator
Enter your mortgage balance, expected mortgage rate, and the years and months remaining on your term. You can also include a mortgage fee and decide whether to pay it upfront or add it to the mortgage. If you know the property price, add it to estimate your current LTV as well.
Why property price is optional
Some people use a mortgage repayment calculator before buying a property, while others want to check repayments on an existing mortgage. Making property price optional keeps the tool useful in both cases. When a property price is not entered, the calculator can still estimate repayments, but LTV-based outputs are hidden or shown as not available.
Repayment vs interest-only
A repayment mortgage means each payment usually includes both interest and some of the original amount borrowed. An interest-only mortgage generally keeps the balance unchanged during the term, with the original loan typically still needing to be repaid at the end. This calculator shows both options so you can compare the difference.
Important note
This calculator provides estimates only. Actual mortgage products may calculate interest differently, and lender-specific fees, product rules and repayment methods may vary.