Mortgage Payment Calculator

Use our mortgage repayment calculator to estimate how much your monthly mortgage payments could be. Enter the amount you want to borrow, the interest rate and your mortgage term, and the calculator will show an illustration of your potential monthly repayments. 

This tool is designed to help you understand how different factors, (such as mortgage length or interest rate) can change your repayment amount. It does not provide financial advice or indicate which mortgage product may be suitable for you.

Repayments calculator

Calculate how much your monthly mortgage repayments will cost.

How will these fees be paid?


Type of mortgage


Your monthly payment 0
Total you'll pay back 0

How mortgage repayments are calculated 

Mortgage repayments depend on several factors, including: 

  • The amount borrowed (the loan size): This is the total amount of money you take out. 
  • The mortgage term: This is the number of years you’ll take to repay the mortgage. 
  • The interest rate: This determines how much interest you pay on the loan each year. 
  • Mortgage type:
    - Repayment: you pay back both the interest, and the loan amount each month.
    - Interest only: you only pay the interest each month and repay the full loan amount at the end of the term.

This calculator provides an illustration only and does not take into account all factors that may apply to your circumstances.  

Important information 

SECURITY OVER YOUR HOME IS REQUIRED.  YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON A MORTGAGE OR ANY OTHER DEBT SECURED ON IT. CHECK THAT THESE MORTGAGES WILL MEET YOUR NEEDS IF YOU WANT TO MOVE OR SELL YOUR HOME OR YOU WANT YOUR FAMILY TO INHERIT IT. IF YOU ARE IN ANY DOUBT, SEEK INDEPENDENT FINANCIAL ADVICE.

Mortgage Repayment Calculator FAQs

What is a mortgage repayment?

A mortgage repayment is the amount you pay each month towards the interest and/or the loan amount borrowed. 

What affects my monthly mortgage cost?

Your monthly payment can change based on the loan amount, interest rate, mortgage term and whether your mortgage is repayment or interest only. 

What are mortgage fees

Mortgage fees may include product fees, arrangement fees or booking fees charged by some lenders. These may be paid upfront or added to the loan amount. 

What is a mortgage term?

The mortgage term is the length of time over which you agree to repay the loan. Common mortgage terms range from 15 to 35 years. 

Can repayments change over time?

Yes. If your mortgage has a variable or tracker interest rate, the amount you pay each month may go up or down if interest rates change. 

Why does the interest rate make such a big difference to repayments?

Interest is the cost of borrowing money. A higher interest rate means you pay more for the loan over time, which increases your monthly repayment. 

Does this calculator show exact repayments?

No. The calculator focuses on mortgage repayment amounts and does not include additional property purchase costs such as stamp duty, legal fees, valuation fees or insurance.

Does the calculator include stamp duty or solicitor fees?

No. The calculator focuses on mortgage repayment amounts and does not include additional property purchase costs such as stamp duty, legal fees, valuation fees or insurance.

What is an interest-only mortgage?

With an interest only mortgage, you pay only the interest each month. The full loan amount is repaid at the end of the mortgage term. 

Can I use the calculator for interest only mortgages?

With an interest only mortgage, you pay only the interest each month. The full loan amount is repaid at the end of the mortgage term.

Why might my lender’s calculation be different?

Lenders often consider additional factors such as fees, rounding rules, variable interest rates, and specific product terms.