Term Comparison (10–30 Years)
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Use this free mortgage term calculator online to compare how different repayment periods affect your monthly mortgage payments and total interest.
Enter your mortgage amount and interest rate to compare 10-, 15-, 20-, 25-, and 30-year terms. The results can help you understand the trade-off between lower monthly payments and the overall cost of borrowing in pounds (£).
Compare Mortgage Terms in the UK
Choosing a mortgage term is an important part of planning your home loan. A shorter term means repaying the mortgage faster, while a longer term spreads repayments over more months.
This calculator compares five repayment periods using the same loan amount and interest rate, making it easier to see how the term affects your estimated costs.
See How Your Mortgage Term Affects Monthly Payments
A longer mortgage term generally lowers the monthly repayment because the loan is spread over a greater number of months.
A shorter term usually requires higher monthly payments, which may put more pressure on your budget.
Use the results to compare payment levels, then explore our mortgage payment calculator for a separate payment estimate.
Compare Total Interest Across Different Terms
Monthly affordability is only one part of the decision. Extending your mortgage term can increase the total interest paid, even when the monthly payment is lower.
The calculator estimates total interest by subtracting the original loan amount from all scheduled repayments. For another way to explore interest costs, try our mortgage interest calculator.
Choose a Term That Fits Your Budget
The right mortgage term depends on your income, regular expenses, future plans, and how much you can comfortably repay each month. A shorter term may reduce interest costs but requires a larger payment.
A longer term may provide more monthly flexibility but keep you in debt for longer. Our mortgage affordability calculator can help you explore a suitable borrowing budget.
What to Know Before Choosing a Mortgage Term
This calculator assumes a constant interest rate and equal monthly repayments throughout the selected term. In the UK, a mortgage’s initial fixed or discounted rate may end before the full repayment period, meaning future payments could change.
Lender fees, product charges, and changes in interest rates are not included. Confirm the available terms and full costs with your mortgage lender or adviser.
Disclaimer: This calculator provides estimates for informational and educational purposes only, not financial, tax, legal, or professional advice. Results are based on the information entered and may differ from actual costs, payments, rates, fees, or eligibility. Verify details with the relevant lender, financial professional, or official source before making financial decisions.
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Disclaimer
MortgageRatesChecker provides educational mortgage calculators, loan tools, and financial guides designed to help you better understand home financing. Our content is researched, fact-checked, and regularly updated in accordance with our Editorial Policy, using trusted information from our Data Sources and transparent methodologies explained in How We Calculate. Learn more about our commitment to accuracy on Why Trust Us. This content is provided for informational purposes only and should not be considered financial, legal, tax, investment, or mortgage advice. Mortgage rates, lending requirements, loan programs, and regulations may change without notice. Before making any borrowing, refinancing, or home-buying decision, consult your Bank or Mortgage Lender, licensed financial advisor, tax professional, or attorney based on your individual circumstances. MortgageRatesChecker is an independent educational resource and is not a lender, mortgage broker, financial advisor, or government agency. Please review our Affiliate Disclosure, Advertiser Disclosure, Disclaimer, and Terms & Conditions for additional information.
