Mortgage repayment calculator

what your loan really costs per month

Enter your loan amount, interest rate and term to see the monthly payment — on capital repayment or interest-only — plus the total cost over the term and the split between capital and interest. The calculator gives you the working figures for any deal you are weighing.

For contractors, the monthly payment is the bridge between day rate and property budget: it converts the borrowing capacity our borrowing calculator estimates into the commitment your contract income will actually service.

How the calculation works

Capital repayment payments amortise the loan to zero over the term — each payment covering that month's interest plus a slice of capital, with the capital slice growing as the balance falls. Interest-only payments cover the interest alone, leaving the balance intact for repayment by another route at term end.

The rate you enter should be the deal's actual rate — and remember that fixed periods end: stress the payment at a higher follow-on rate to see the exposure when the fix expires, which is exactly what lender affordability tests do.

Mortgage Repayment Calculator — ContractorMortgagesDirect.co.uk
Mortgage repayment calculator
Your monthly payment and total cost — repayment or interest-only.
Results are illustrative only and do not constitute financial advice or a lending decision. Contractor Mortgages Direct is a trading name of Mortgage Knight Ltd, authorised and regulated by the Financial Conduct Authority. Your home may be repossessed if you do not keep up repayments on your mortgage.
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Reading the results like an underwriter

Lenders test the payment against your assessed income at stressed rates — so a payment comfortable at the deal rate may still constrain the maximum loan at the stress rate. Fees matter too: a lower rate with a large arrangement fee can cost more over a short fixed period than a higher fee-free rate, which is why the total-cost figure deserves more attention than the headline rate.

For the contractor-specific layer — how your day rate becomes the assessed income behind these payments — our day rate contractors page and borrowing calculator carry the detail.

FAQs

Frequently Asked Questions

Residential mortgages are overwhelmingly capital repayment — interest-only requires an evidenced repayment strategy and suits specific cases (covered on our Leeds Building Society and specialist pages). Buy to let conventionally runs interest-only, which is why our BTL calculators default that way.
The deal rate for the real payment, and a higher stressed rate (2-3% above) to see the post-fix exposure — the same test lenders apply. We quote live rates for your actual profile rather than calculator guesses.
Usually fees rolled into the loan, daily-versus-monthly interest conventions, or a different rate tier for your LTV. The calculator gives the working approximation; the binding figure comes on the offer, which we verify line by line.
That is the companion question — our how much can I borrow calculator runs the income side, converting your day rate into borrowing capacity. The two calculators together frame any purchase decision.