MSWITCH GUIDE · BUY TO LET
Buy-to-let rental income: what a lender may assess
Why expected rent does not translate into one fixed borrowing figure.
Updated 19 October 2026 · General information
A lending test, not a return forecast
A lender may compare rent with a stressed interest payment using an interest coverage ratio. This is a way of assessing the borrowing, not an estimate of your future profit.
Prepare the full picture
Assessment varies by lender, product, property and applicant. Personal finances or the wider rental portfolio may also matter. Keep the rent evidence and existing mortgage information together so an adviser can review the case.
Your starting checklist
- Expected or current monthly rent
- Tenancy information
- Property value and proposed loan
- Other rental properties and borrowing
How does this apply to you?
Anwar can discuss your circumstances, explain the options available through Mswitch and confirm any advice fee before you proceed.
Book a 30-minute appointmentExplore the relevant serviceLender criteria and product availability can change. This is general information, not tax or legal advice. Ask a suitably qualified professional about tax or legal decisions.
Your property may be repossessed if you do not keep up repayments on your mortgage.
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