Buy-to-Let Calculator

Estimate your monthly buy-to-let mortgage payments with our simple calculator. Enter your loan amount, interest rate and mortgage term to see how much your repayments could be. Ideal for landlords, property investors, remortgaging, or anyone exploring a buy-to-let purchase and looking to understand affordability, rental yield and potential cash flow.

1. Calculation type


2. Loan details

Application type*

Product type*

Property type*


3. Tax rate

Buy-to-Let Mortgage FAQs

Here’s a quick guide to the most common questions we’re asked about buy-to-let mortgages. If you can’t find the answer you need, our expert advisers are always here to help.

  • How much deposit do I need for a buy-to-let mortgage?
    Most UK buy-to-let mortgages require a minimum deposit of 20–25% of the property value. Some lenders may require higher deposits depending on your experience, credit profile, or if the property is considered higher risk.
  • How is affordability assessed for a buy-to-let mortgage?
    Lenders assess affordability based primarily on the expected rental income rather than your personal income. Typically, the rent must cover 125–145% of the mortgage interest, depending on the lender and your tax status.
  • Can I get a buy-to-let mortgage through a limited company?
    Yes, many landlords now purchase property through a limited company (SPV). This can offer tax efficiencies for some investors, and there are specialist lenders who cater specifically to limited company buy-to-let mortgages.
  • What interest rates are available for buy-to-let mortgages in the UK?
    Buy-to-let mortgage rates vary depending on factors such as deposit size, property type, and your experience as a landlord. Rates are typically higher than residential mortgages, and can be fixed, tracker, or variable.
  • Do I pay extra Stamp Duty on buy-to-let properties?
    Yes, buy-to-let properties are usually subject to an additional 3% Stamp Duty surcharge on top of standard rates. This applies to second homes and investment properties across England and Northern Ireland.
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