P propCALC.uk
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propcalc.uk by Propreneur Free UK calculators · no sign-up
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Deal strategies

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About this calculator

Monthly mortgage payment for interest-only or capital repayment.

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Did you know?

On a £200,000 loan at 5.5% over 25 years, switching from interest-only to repayment adds roughly £700/month but saves substantial total interest.

Calculator

Mortgage repayment (IO or repayment)

Monthly payment for interest-only or capital repayment over a fixed term at a given annual rate.

Inputs

Run calculator

Runs against the live API. Nothing is stored. Use Sign up to save results.

Sensitivity scenarios

Sign up to save deals

Create a free Propreneur account to save these numbers against a property.

Optional overrides - mortgage estimate for BTL / commercial

Uses offer price, monthly rent, and monthly expenses (x12 as annual opex) from the form above.

Show working

See every formula, your numbers plugged in step by step, and where each cost comes from. No other UK property calculator shows its maths like this.

Save your numbers and get the next step

Email yourself this run so you do not have to rebuild it later. We will include the result, the assumptions, and the next Propreneur step for saving deals and tracking follow-up.

Run the calculator first. The email uses your latest numbers.

Phone is optional and only for direct follow-up. You can keep calculating without submitting this form.

Saved - check your inbox shortly.

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