Buy-to-Let Mortgages in the UK

Buy-to-let mortgages are usually assessed around rental income, loan-to-value and landlord criteria. Estimates can help you test the property numbers before seeking advice.

Your home may be repossessed if you do not keep up repayments on your mortgage.

This page is for landlords and prospective landlords checking UK buy-to-let mortgage and rental-yield estimates.

Quick summary

Buy-to-let borrowing often depends on rental cover as well as borrower criteria.
Many buy-to-let mortgages are interest-only, but product choice depends on circumstances.
Lenders may apply rental stress tests and extra checks for portfolio landlords.
Tax treatment depends on your circumstances and may require tax guidance.

What lenders may look at

Expected rental income
Loan-to-value
Property type and condition
Landlord experience
Personal income and credit history

Documents you may need

Property details
Rental income evidence or letting estimate
Bank statements
ID and proof of deposit
Portfolio details if applicable

Practical next steps

Model rent, void periods, maintenance, insurance and letting costs.
Check rental yield and interest-only payment assumptions before relying on cash-flow figures.
Review whether the property type fits mainstream or specialist landlord lending.
Consider tax guidance before choosing personal or limited company ownership.

Common issues

Gross yield looking acceptable before allowing for maintenance, voids and tax.
Rental income falling short of a lender stress test.
Specialist property types such as HMOs or holiday lets needing different criteria.
Assuming limited company ownership is always better without tax guidance.

Buy-to-Let Yield Calculator

Estimate gross and net rental yield for a UK BTL property.

Property value (£) Monthly rent (£) Deposit (£) Mortgage rate (%) Management cost (% of rent) Maintenance (% of rent)

Gross yield

—%

Net yield

—%

Est. monthly cash flow

£—

Most BTL mortgages are interest-only. Estimate excludes stamp duty, void periods, insurance, tax, and arrangement fees.

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Related calculators

Calculator outputs are estimates only. They do not confirm lender acceptance, product availability, rates, fees or suitability.

Frequently asked questions

Does rental yield prove I can get a buy-to-let mortgage? +

No. Rental yield is only an estimate. Lenders use their own rental stress tests and borrower criteria.

Are buy-to-let mortgages usually interest-only? +

Many are arranged on an interest-only basis, but availability and suitability depend on the lender, property and borrower circumstances.

Can a first-time landlord get a buy-to-let mortgage? +

Some lenders consider first-time landlords, but criteria can be tighter and product choice may be narrower.

Should I buy through a limited company? +

That depends on your tax position, investment plans and mortgage options. Consider tax guidance before deciding.

Compare related UK mortgage situations

First-time buyer mortgages Self-employed mortgages Buy-to-let mortgages

Use the buy-to-let yield calculator Estimate rental yield and basic cash-flow assumptions. Read the buy-to-let guide Review landlord criteria and rental stress testing context. Estimate interest-only payments Model interest-only payment assumptions before adviser checks.

Calculator-led mortgage planning

UK Mortgage Calculators is centred on practical estimation tools. The pages help you model cautious scenarios before you decide whether to request a broker or adviser callback.