Rental Income Calculator
Work out the rental income your buy-to-let property needs to generate for mortgage approval.
Our rental income calculator UK tool estimates the minimum monthly rent your property may need to achieve to qualify for a buy-to-let mortgage.
Enter your required mortgage amount and the calculator applies a stressed interest rate alongside an Interest Coverage Ratio (ICR) to work out the rental income lenders will expect. Because criteria vary by lender and your tax position affects the ICR applied, the figure you get here is a guide rather than a guarantee.
Use this calculator when you’re buying a new buy-to-let property or refinancing an existing rental mortgage, to get a feel for whether the numbers stack up before you apply.
This is an estimate only. Speak to one of our mortgage advisers to check your rental income against current lender criteria.
FAQ: Rental Income Calculator
Why do mortgage lenders assess rental income for buy-to-let properties?
Buy-to-let lenders use expected rental income as an important part of assessing whether the proposed mortgage is sustainable. The rent may be stress-tested against the mortgage using the lender's individual affordability criteria. Oportfolio's existing let-to-buy guidance similarly notes that potential rental income is stress-tested when assessing affordability.
Does higher rental income mean I can get a bigger buy-to-let mortgage?
Potentially. Stronger rental income can support a higher mortgage under some lenders' affordability calculations, but the final amount available will also depend on factors such as property value, LTV and the lender's criteria.
This information is a guide only and should not be relied on as a recommendation or advice that any particular mortgage is suitable for you. All mortgages are subject to the applicant(s) meeting the eligibility criteria of the specific lender. You should make an appointment to receive mortgage advice which will be based on your needs and circumstances.