Buy-to-Let Mortgage Calculator
- Our Buy-to-Let mortgage calculator provides an estimate of how much you could borrow for a rental property.
- It takes into account factors such as expected rental income, interest rates, and whether you're applying as an individual or through a limited company.
- Actual lending amounts vary between lenders, so this should be used as a guide only.
Want help understanding mortgage terms? Explore our glossary.
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Important: This information does not contain all of the details you need to choose a mortgage. Make sure that you read the separate key facts illustration before you make a decision.
What's next?
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Use our calculators
Get an idea of what you could borrow for a rental property.
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Get in touch
Speak to us about your buy-to-let mortgage needs.
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We'll do the rest
From application to offer, we’ll guide you every step of the way, so you’re ready to secure your next investment property.
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Mortgage Calculators
Find all of our easy-to-use mortgage calculators here.
Mortgage Repayment Calculator
See your possible monthly mortgage payments.
How Much Can I Borrow?
Discover how much a lender might let you borrow.
Stamp Duty Calculator
Find out how much Stamp Duty Land Tax you might pay.
Mortgage Overpayment Calculator
Learn how extra payments could save you money and shorten your mortgage.
Buy-to-Let Rent Check
View the minimum rent that might be needed for your chosen mortgage amount.
Compare Mortgage Rates
Compare mortgage rates from the UK's leading lenders.
Important information to note!
- Your property may be repossessed if you do not keep up repayments on your mortgage.
- Using our mortgage calculators or rate comparison tools will not affect your credit score.
- These tools are for guidance only and do not replace financial advice.
- Your actual mortgage offer may be different from these estimates. Lenders will look at your credit history, spending, and other factors before deciding.
- Always talk to a qualified mortgage adviser for advice that’s right for you and your needs.
- Mortgage products and rates can change at any time, for example if the Bank of England base rate changes or if the government updates policies.
- Our mortgage advice is fee-free. Third-party fees may apply during the home buying process.
Frequently Asked Questions
The amount you can borrow depends on various factors, including your finances, credit score, and the property's rental potential. Most lenders offer between 75% and 85% loan-to-value (LTV), but the final figure is often based on a rental income calculation.
Typically, rental income must cover at least 125%, and sometimes up to 145%, of the mortgage repayments under the lender's stress test to ensure affordability.
Usually, you'll need a deposit of at least 25% of the property's value. Some lenders may accept 20%, but this is less common. Putting down a larger deposit often helps you access better interest rates and more mortgage options.
Mortgages with a 10% deposit are rare and typically available only through specialist lenders, subject to strict conditions. These loans tend to have higher interest rates and tougher checks. It's generally easier to get approval and better terms with a larger deposit.
Your interest rate depends on various factors, including your loan-to-value ratio, credit score, length of your mortgage, the overall market, and the type of loan you choose. A fixed-rate mortgage can provide certainty about your monthly payments for a set period, but might include early repayment charges if you exit the deal early.
- Interest-only: You pay just the interest each month, keeping your payments lower, but the original capital must be paid back at the end of the term, typically through a property sale or remortgage.
- Capital repayment: You pay both interest and part of the capital monthly, so the mortgage is fully repaid by the end of the term.
- Some lenders may allow switching between these repayment types during your mortgage term.
You'll need to repay the full capital outstanding. Planning is crucial because remortgage approval depends on factors like your credit score, the current property value, and expected rental income.
Lenders consider:
- Your credit score and proof of identity
- Your personal income and rental income from the property
- Employment history, especially if self-employed
- The property type and your landlord experience
- Your deposit size and any other borrowing
Buy-to-let calculators primarily focus on rental yield, deposit size, and the rental income required to meet lender rules. Calculators for buying a first home focus more on your income and living expenses. Standard mortgage calculators typically assess personal finances to inform home financing decisions.
Yes. Self-employed applicants typically need to provide at least two years' worth of tax returns and business accounts. For remortgaging, lenders closely review your rental income history and financial stability.
Besides mortgage repayments, budget for:
- Letting agent or property management fees
- Landlord insurance
- Maintenance and repairs
- Void periods when the property is empty
- Council Tax (usually paid by tenants, but landlords may be liable during voids)
- Legal fees and taxes on rental income
Start by checking your credit score, gathering proof of identity and financial records, and speaking with one of our qualified mortgage advisers who can help with the most suitable options.
Important: Buy-to-let mortgages are subject to specific eligibility rules and affordability tests that are subject to change.