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Mortgage Calculators

Not sure where to start? Pick a mortgage calculator below and we’ll help you run the numbers — from repayments and borrowing power to rental ROI and stamp duty fees.

Mortgage Calculators

Not sure where to start? Pick a mortgage calculator below and we’ll help you run the numbers — from repayments and borrowing power to rental ROI and stamp duty fees.

Important information on how our calculator works

The above calculations are a guide only and are not guaranteed nor should not be relied on as a recommendation or advice that any particular mortgage is suitable for you. Please make an appointment to receive mortgage advice suitable for your needs and circumstances.

All mortgages are subject to the applicant(s) meeting the eligibility criteria of lenders. Loans are subject to status and valuation and are not available to persons under 18 years of age. Written quotations are available from individual lenders. For secured loans, the lender will require a charge on your property and in the case of endowment mortgages, an endowment/life policy for the amount of the advance and a charge over the property. For interest-only mortgages, the above calculations do not take into account the cost of any endowment, pension, or other savings plan being used to repay the loan. In addition, the figures shown in respect to both repayment and interest-only mortgages do not include the cost of additional life cover. Your home may be repossessed if you do not keep up repayments on your mortgage.

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Frequently Asked Questions

Which calculator should I use first?

If you’re just starting out, How Much Can I Borrow? is a good place to begin. If you already have a property price in mind, try the Repayment Calculator to estimate monthly payments.

Estimates are fine for an initial view. The more accurate your inputs (income, commitments, deposit, expected rent, fees), the more useful the results will be.

They’re illustrative estimates, designed to help you understand potential costs and affordability. Your actual available rates and borrowing can vary by lender, credit profile, property type, and underwriting.

They help you estimate key buy-to-let figures such as potential borrowing, mortgage costs, and whether rent might meet typical lender coverage expectations—so you can sense-check a property before going deeper.

Lenders consider factors the calculators can’t fully capture, such as credit history, existing debts, property type/construction, employment type, stress-testing rules, and detailed affordability models.

Use the results to narrow down your budget and scenarios, then speak to a mortgage adviser to confirm affordability and explore suitable products for your circumstances.

No. Using these calculators does not run a credit check and won’t impact your credit score.

4.97 out of 5 based on 2,400+ reviews