Buy to Let — pricing factors (UK)
What lenders weigh when pricing buy to let cases — not live quotes. Use our calculators and speak to an FCA-authorised broker for firm-specific numbers.
Mortgage118 does not publish indicative rate bands. Lender pricing changes daily and depends on your profile.

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What lenders look at
These factors shape whether a buy to let case is accepted and how it is priced. They are not a quote.
- Minimum age 21, maximum age 75-80
- Good credit history and financial stability
- Sufficient income to cover rental void periods
- Understanding of landlord responsibilities
- Adequate deposit and emergency reserves
- Suitable residential property type
For indicative numbers, use our mortgage calculators and compare brokers who specialise in buy to let.
What moves your rate up or down
These are the strongest factors lenders weigh when setting pricing.
- Rental income used to support mortgage affordability
- Interest-only and repayment options available
- Professional landlord support and guidance
- Access to specialist buy-to-let lenders
- Flexible lending criteria for experienced investors
Fee breakdown
Common charges to plan for alongside the headline rate.
Arrangement Fee
Lender product fee
1% - 2% of loan
varies by lender
Valuation Fee
Investment property survey
£300 - £1,500
one-time cost
Legal Fees
Conveyancing and title work
£1,000 - £2,000
plus disbursements
Broker Fee
Specialist arrangement fee
0.5% - 1%
on completion
Rate FAQs
Quick answers to common pricing questions.
What's the difference between buy to let and standard residential mortgages?+
Buy to Let mortgages are specifically designed for buy to let purposes and typically offer different terms, rates, and criteria compared to standard residential mortgages. They may have higher interest rates but provide access to funding that standard mortgages cannot offer for specialised property types or investment strategies.
How is rental income assessed for buy to let mortgage applications?+
Lenders typically require rental income to cover 125-145% of mortgage payments, calculated using either actual rental income (if already let) or market rental assessments. They'll stress test the rental income at a higher rate to ensure affordability.
What are the tax implications of buy to let investments?+
Buy to let properties are subject to income tax on rental profits, capital gains tax on disposal, and potentially stamp duty surcharge on purchase. Recent changes have reduced mortgage interest tax relief, so it's important to understand the current tax implications.
Can I get an interest-only buy to let mortgage?+
Yes, many lenders offer interest-only buy to let mortgages, which can improve cash flow by reducing monthly payments. However, you'll need to demonstrate a credible repayment strategy, such as selling the property or using other assets.
What happens if my rental property becomes vacant?+
Lenders expect some void periods and typically require you to demonstrate sufficient income to cover mortgage payments during voids. Some lenders may require 6 months' mortgage payments in reserve for this purpose.
Can I remortgage my buy to let property?+
Yes, you can remortgage buy to let properties to access better rates, release equity, or change lenders. The process is similar to residential remortgaging but with additional rental income assessments.