Mortgage
Calculator UK
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If you want a quick estimate of monthly mortgage payments, our mortgage calculator is a useful place to start. It helps you sense-check a budget before you speak to a lender or start viewing properties. The figure you see is an estimate, based on the rate, term, and loan amount you enter.
For an exact figure and the best options available to you, we recommend a full mortgage review. Lenders all assess affordability differently, and details like income type, credit commitments, deposit source, and property type can materially change what is achievable.
Use our mortgage calculator
Add your property price, deposit, mortgage term, and an estimated interest rate. The calculator will show an estimated monthly payment.
Important note
This calculator provides an estimate only. Your actual payment and borrowing amount will depend on lender criteria, your full financial profile, and the mortgage product you choose.
Want a more accurate result
If you tell us a few details, we can run a proper affordability assessment and match you to lenders who fit your circumstances, including complex cases and specialist mortgages.
What this mortgage calculator includes
This calculator is designed to help you estimate payments on a standard repayment mortgage. It can be used by first time buyers, home movers, remortgagers, and buy to let landlords who want a quick sense check.
It does not account for lender specific rules such as stress testing, minimum income requirements, credit score variations, overtime and bonus treatment, self employed income calculations, or property restrictions such as flats above commercial premises.
How to use the calculator properly
A useful way to use any mortgage repayment calculator is to run a few scenarios. Try a slightly higher interest rate than you expect, or a shorter term, so you can see how your budget might respond if rates change or if you want to repay faster.
You can also test different deposit amounts to understand how a bigger deposit could reduce your monthly payment and open up better rates.
Mortgage affordability vs mortgage repayments
People often mix up two different things.
A mortgage repayment estimate is about the monthly payment for a given loan amount, interest rate, and term.
Mortgage affordability is about how much a lender will offer you based on income, outgoings, dependants, credit commitments, and the lender's own internal calculations.
If you want to know how much you can borrow, the best next step is a broker-led affordability review. It is faster than most people think, and it avoids wasted time on properties that are outside the realistic lending range.
Stamp duty note
Stamp Duty Land Tax rules can change, and your position depends on your circumstances.
First-time buyers may qualify for relief up to certain thresholds, but eligibility depends on whether you have ever owned a property anywhere in the world. Home movers usually pay stamp duty based on the purchase price bands. Second-home owners and buy-to-let investors may pay an additional property surcharge on top of the standard rates, even if the purchase is intended as a future main residence.
As an example, buying a second property at the same price as a main home can cost significantly more once the surcharge is applied. This is one reason it is important to factor stamp duty into your overall budget early. If you want, we can point you to the right guidance and help you plan your purchase costs, but always confirm figures with your solicitor or the relevant government calculator.