FundingSectorsCalculatorsPartner with us
Sign inGet started
01702 967564info@tailwind-finance.co.uk

Commercial mortgage repayment calculator

Estimate what a commercial mortgage could cost each month, and the total over the term. Adjust the amount, term and indicative rate to see how repayments change.

£2,398

Indicative monthly payment at 7.4%

Total interest

£275,633

Total repayable

£575,633

£

£100k

£5m

months

5 years

25 years

% APR

See my real termsAbout this facility

Reading the numbers

The figures here are indicative illustrations, not quotes or offers. Your real terms depend on the lender and your circumstances.

How a commercial mortgage repayment is calculated

This calculator uses the standard amortising repayment formula, the same capital-and-interest method most UK lenders use. Each month you pay the interest due on the outstanding balance plus a slice of the capital, so the balance falls to zero by the end of the term. Early payments are mostly interest; later ones are mostly capital.

Worked example

A commercial mortgage of £300,000 over 20 years at an indicative 7.4% works out at about £2,398.47 a month, roughly £575,633 repaid in total, of which £275,633 is interest. Change the amount, term or rate above to see how the numbers move.

What affects your rate

Pricing is driven by loan-to-value, the property type and your business's trading strength. A larger deposit (lower LTV) usually unlocks a lower rate.

Common questions

Prefer to talk it through?

01702 967564

It uses the standard amortising formula lenders use for capital-and-interest repayments, so the shape is right. It's an indicative illustration, not a quote. Your actual rate, fees and terms come from the lender once you apply.

See what you qualify for

Start your application now. It's free, takes minutes, and there's no credit check to view your options.

Check eligibility
Tailwind FinanceTailwind Finance

Business funding for UK companies, compared seamlessly, matched to your real cashflow with transparent pricing.

Funding

All facilitiesBy sectorCalculatorsGuides

Company

Partner with usGlossaryFAQs

Tailwind Finance Ltd is a limited company registered in England and Wales (company no. 17257498). ICO registration ZC169335, which you can check at ico.org.uk.

Tailwind Finance Ltd is a credit broker, not a lender. It is not authorised by the Financial Conduct Authority and can only complete non-regulated introductions. We work with a panel of lenders, whose particulars will be supplied on request, to find a potentially suitable arrangement for your consideration.

We will receive commission from lenders. Different lenders pay different amounts depending on the commission model. For transparency, we work with the following commission models: a fixed fee, or a fixed or capped percentage of the amount you borrow. Further details of the commission model, calculation and amount will be disclosed to you throughout your journey.

Privacy PolicyCookie PolicyTerms of Use

© 2026 Tailwind Finance