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Buy to let calculator

How much could you borrow

Property details Edit

If you don't know yet, just give an estimate.


Your deposit needs to be at least 20% of the property value.


Repayment results

Based on a property value of £400,000, owing £300,000 over 25 years:

Your loan to value would be:


Therefore you would need a mortgage of:


Your monthly payments could range from:

£823 - £876

You've asked to borrow £430,000, but based on your current circumstances we can only lend you £300,000

It may be worth considering increasing your deposit if you can, or looking at alternative property prices.

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Small print

Please note our online mortgage application is only compatible with Internet Explorer 9+, Google Chrome 34+, Firefox 28+, Safari 5 and 7 web browsers and is not optimised for mobile phones. Subject to status and lending criteria. Written mortgage illustrations available upon request. Borrowers must be aged 18 or over.


Post Office Money® Mortgages are provided by Bank of Ireland (UK) plc. Post Office Limited is an appointed representative of Bank of Ireland (UK) plc which is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Post Office Limited is registered in England and Wales. Registered Number: 2154540. Registered Office: Finsbury Dials, 20 Finsbury Street, London, EC2Y 9AQ. Post Office Money® and the Post Office Money® logo are registered trademarks of Post Office Limited. Our FCA Register Number is 409080. You can confirm our registration on the FCA's website (