Inputs
UK landlord calculator
Buy-to-let mortgage affordability calculator UK
Estimate how much a buy-to-let lender may allow you to borrow using monthly rent, stressed interest rate, interest coverage ratio, maximum LTV, target loan, and fees.
Output
Your affordability estimate
Ready
£0
Enter figures and calculate.
Planning estimate
Unbiased calculation based on HMRC rules
Update to date
Reflects 2025/26 rates and April 2025 changes
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Plain English explanations you can trust