Your figures
If the rate moves
Monthly payment at rates 1% below to 3% above your figure.
These figures are illustrative only and not a quote or a recommendation. A real affordability assessment uses your income, outgoings, credit profile, and lender criteria. Your home may be repossessed if you do not keep up repayments on your mortgage.
Get StartedWhat the calculator does, and what it does not.
Enter the property price, deposit, term, and a sample interest rate. The calculator returns an estimated monthly repayment and total interest over the term. Useful for planning, not a replacement for a proper affordability assessment.
Lenders calculate borrowing based on income, outgoings, credit profile, and the property itself. The calculator does not see any of that. For a real number you can rely on, book a free 15-minute call with an adviser.
The inputs we ask for.
Property price
What the property is worth or what you are looking to pay.
Deposit
How much you are putting in. The bigger this is, the lower the loan-to-value and usually the better the rate.
Mortgage term
How long you want to repay the mortgage over, typically between 5 and 40 years.
Interest rate
A sample rate to model. We will recommend a realistic figure based on your case at consultation.
Repayment type
Capital repayment or interest only. Interest only is rare for residential and standard for buy-to-let.
What the calculator gives you back.
Monthly payment
Estimated capital and interest repayment per month at the rate you entered.
Total cost over term
Estimated total amount paid back over the life of the mortgage at the assumed rate.
Loan-to-value
The ratio of your loan to the property value. Lenders price by LTV band.
Effect of rate change
A view of how monthly payments shift if the rate moves up or down.
Where a calculator stops being useful.
- Whether a lender will actually offer you that loan.
- Your true affordability based on income and outgoings.
- The impact of credit profile, debt commitments, or dependants.
- Buy-to-let stress tests and rental coverage requirements.
- Product fees, valuation fees, legal fees, and other costs.
For any of these, we run a proper affordability check on the call. Free, no obligation, and far more accurate than a calculator.
Calculator FAQs.
Is this an affordability check?
No. It is an illustrative repayment calculator. A real affordability check uses your income, outgoings, credit profile, and lender criteria.
Why does my real rate differ from the calculator?
Rates depend on loan-to-value, product type, lender, fees, and credit profile. The calculator uses the rate you enter, not a quoted product rate.
Can I save the result?
Yes. Take a screenshot, or just leave the page. Your figures are remembered on this device. To get a personalised quote, book a free 15-minute call.
Do I have to use the calculator before booking?
No. The fastest route to a real answer is to book a call. We run the numbers properly with you.
