Compare Buy-to-Let Mortgages & Rates 2026
Review the latest buy-to-let mortgage rates to identify the most suitable product for your rental property investment. Begin by making sure the ‘Mortgage Purpose’ in the table below is set as ‘Buy to Let’ , then compare offers from various lenders to assess rates, fees, and flexibility
Compare DealsOur expert says: What’s changing right now
Recent changes to buy-to-let stamp duty and rising property prices are significantly impacting landlords across the UK. Higher surcharges and updated thresholds have increased upfront costs, making it essential to secure competitive buy-to-let mortgage rates. Investors should prioritise deals that balance rates, fees, and flexibility, and carefully review rental income projections for buy-to-let property. Planning ahead, reviewing lender criteria, and considering potential tax changes can help avoid unexpected costs and ensure your mortgage supports long-term cash flow and portfolio growth.
Check RatesHow do buy-to-let mortgages work?
A buy-to-let mortgage is intended for properties rented to tenants, not for personal use. Most lenders prioritise an assessment on rental income, deposit/equity amount, and rental coverage, rather than personal income. Most buy-to-let mortgages are taken out on an interest-only basis, so monthly payments cover only the interest being charged, with the principal balance being repaid at the end of the term. To arrange a buy-to-let mortgage, follow these steps:
Prepare your deposit and calculate LTV
Most lenders require a buy-to-let deposit of 25 %, though it can range from 20 % to 40 %. This is a higher percentage than residential mortgage deposits due to the increased risk associated with buy-to-let lending. A larger deposit usually secures more favorable buy-to-let mortgage rates by opening up the number of lenders available and the competition between them.
Interest-only monthly payments
With an interest-only buy-to-let mortgage, monthly payments cover only the interest. The principal balance is repaid at the end of the term, typically through the sale of the property, refinancing, or other investments and savings the landlord has. While this means lower mortgage payments and provides you with a higher income from rent, it is essential to have a clear exit strategy in order to repay the principal balance at some point in the future.
Repay the full loan at the end
Repay the full loan at or prior to the end of the term. Most landlords prepare by selling the property, refinancing, or using investments/savings to settle the loan. Early and regular planning supports financial stability and the goal of being able to do so eventually.
What is a buy-to-let mortgage?
A buy-to-let mortgage is a loan specifically for purchasing property to rent out to tenants rather than for personal use. Unlike residential mortgages, lenders focus on rental income, require higher deposits, and assess the investment’s risk. Key differences include larger deposits, rental income as the main source of mortgage payments, and stricter credit and property suitability checks.
Understanding these distinctions helps landlords plan cash flow, ensure rental income covers the mortgage, and make informed investment decisions. Find the latest buy-to-let mortgage rates.
Find the latest buy-to-let mortgage rates
Buy-to-let mortgage rates are influenced by your loan-to-value ratio, credit history and product type:
- LTV band: Lower LTV typically secures a better rate.
- Credit history: Stronger credit history can results in lower interest rates.
- Product type: Fixed, tracker, or variable rates differ so will affect monthly payments.
Understanding these factors helps landlords accurately compare deals. Use this information to compare buy-to-let mortgages, see which lenders may offer the most competitive options, and make informed decisions for both short-term cash flow and long-term returns.
Use these figures to compare options and select the most suitable mortgage for your investment.
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The best buy-to-let deals
Here are some representative examples of the best buy-to-let mortgage deals currently available across different LTV bands – begin by making sure the ‘Mortgage Purpose’ in the table below is set as ‘Buy to Let’ , then compare offers from various lenders to assess rates, fees, and flexibility. Use the filters to compare buy-to-let mortgages by:
- Initial interest rate type and period
- Max Loan-to-value (LTV) band
It can help you compare rates and fees across lenders and choose a deal that aligns with your investment strategy, however for a more personalised review of the options specifically available to you, contact us or arrange a call back. Understanding the options available supports informed portfolio decisions and effective long-term planning.
Mortgage Tables
Fixed-rate buy-to-let deals
A fixed-rate buy-to-let mortgage secures your interest rate for a set period providing some protection against rate increases and predictable monthly payments during this. This option offers landlords stability and certainty, simplifying cash flow planning and helping ensure rental income covers mortgage payments.
Tracker and variable buy-to-let deals
Tracker buy-to-let mortgages and variable buy-to-let mortgages adjust with market rates. Monthly payments may increase or decrease, creating opportunities for savings if rates fall but also increasing risk if rates rise.
These options are best for landlords who can manage payment changes, seek flexibility, or expect interest rate movements that could enhance their returns.
How much will my buy-to-let mortgage cost?
The buy-to-let mortgage cost is influenced by several key factors:
- Deposit: A larger deposit lowers the loan-to-value ratio and may help secure a better rate.
- Interest rate: The interest rate determines monthly payments. Lower rates reduce overall costs.
- Loan term: If you opt for a repayment (capital & interest) mortgage, a longer term reduces monthly payments but increases the total amount you would have paid towards interest overall.
- Fees: Arrangement, valuation, and legal fees contribute to the total cost.
Interest-only vs repayment
Interest-only mortgages
Interest-only mortgages require payment of interest only, resulting in lower monthly mortgage payments, but the principal balance remains due at the end of the term.
Repayment mortgages
Repayment mortgages payments contribute towards both interest and repayment of the principal, gradually reducing the loan balance and increasing monthly mortgage payment
By considering these factors, landlords can plan cash flow, assess affordability, and understand how different mortgage types affect long-term returns. It is important to account for lender fees and plan for rental shortfalls or void periods to ensure accurate budgeting and portfolio profitability
Who is eligible for a buy-to-let mortgage?
Buy-to-let mortgage eligibility is based on factors such as age, credit history, actual or expected rental income, and deposit size. Lenders require that rental income covers mortgage payments with a buffer, typically verified through an interest coverage ratio (ICR) of 125–145%. Satisfying these requirements allows landlords to access competitive rates and shows they can manage mortgage payments responsibly.
Rental yield & affordability
When assessing a property for a buy-to-let mortgage, the lender’s main consideration is the interest coverage ratio (ICR) which is similar to how a landlord considers rental yield. Rental yield measures the annual rental income as a percentage of the property’s value, providing an indication of the potential return on investment. A higher yield generally improves your chances of being approved for a buy-to-let mortgage, as it demonstrates that the property generates sufficient income to cover mortgage and letting costs.
The ICR ensures that rental income comfortably exceeds monthly interest payments, typically by 125–145% (depending on your income tax bracket), providing a buffer for void periods, maintenance, or unanticipated expenses. Lenders may also consider additional factors such as property type, location, and tenant or tenancy type when determining whether they can lend. By carefully calculating both yield and ICR, investors can determine whether the property is financially viable, plan for realistic cash flow, and identify which buy-to-let mortgage deals are suitable for their requirements and expectations.
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How big a deposit do I need?
Most lenders require a buy-to-let deposit between 20% and 40% of the property value.
A higher buy-to-let LTV increases the lender’s risk, which usually results in fewer lender options and higher interest rates. Understanding how deposit size affects LTV helps landlords plan their investment, compare suitable products, and identify deals they can realistically access.
How to calculate your LTV
To calculate loan-to-value (LTV), divide the mortgage amount by the property value or purchase price and multiply by 100. For example, a £150,000 mortgage on a £200,000 property gives an LTV of 75%
Knowing your LTV is essential because lenders use it to determine which products you can access and which buy-to-let mortgage rates you may qualify for. Understanding LTV requirements helps you plan your deposit and select the most suitable mortgage.
Check your LTV band
Lenders group borrowers into buy-to-let LTV bands, such as 60%, 75%, 80%, and above. Your LTV band determines which deals and interest rates you can access. Checking your band before comparing products helps you focus on realistic options and identify the best buy-to-let mortgage rates for your investment. Being aware of your LTV band also allows better planning of deposits and cash flow.
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What affects buy-to-let interest rates?
Many factors influence buy-to-let mortgage rates. A lower loan-to-value ratio typically results in a lower rate, however your personal circumstances, credit history and rental coverage affects how lenders assess risk.
External indexes such as The Bank of England base rate impacts most tracker and variable rate mortgages. The type of product, whether fixed, tracker, or variable, also determines the rate. Considering these factors helps landlords select the most suitable mortgage and manage cash flow effectively.
Estimate your monthly payments
Use the calculator to estimate monthly buy to let mortgage payments by entering the mortgage amount, term, and interest rate. Even small changes in rate or term can significantly impact payments. Testing different scenarios supports cash flow planning, affordability assessment, and product selection.
Representative Example
A landlord takes an interest-only buy-to-let mortgage of £150,000 on a £200,000 property with a 25-year term at 4.50 %. The monthly interest-only payment would be approximately £562.
Switching to a repayment mortgage with the same balance, rate and term increases the monthly payment to approximately £833, while gradually reducing the loan balance. This representative example shows how LTV, interest rate, and repayment type affects monthly payments and long-term debt management.
Benefits & risks of buy-to-let
Before taking out a buy-to-let mortgage, landlords should carefully consider both potential benefits and risks.
Key risks and downsides:
Tax changes:
Reducing mortgage interest relief or a higher rate of stamp duty may lower net returns on buy-to-let investments.
Rental voids:
Unoccupied periods can disrupt cash flow and may require additional financial reserves.
Maintenance and repair costs:
Unexpected repair or improvement expenses can reduce profitability.
Early repayment charges:
Switching mortgage deals or repaying early may result in significant fees.
Portfolio complexity:
Managing multiple properties increases administrative and financial demands, such as combined loan-to-value calculations and higher total debt.
Key benefits:
Regular rental income
Provides a predictable cash flow when tenants are in place.
Long-term capital growth:
Rising property values can increase overall investment returns, even after taking into account potential Capital Gains Tax.
Portfolio diversification:
Owning multiple properties spreads risk and reduces reliance on a single asset.
Leverage:
A mortgage enables investors to expand their property portfolio with a smaller initial deposit.
Product flexibility:
Fixed, tracker, and interest-only options allow investors to align mortgage types with their cash flow and risk preferences.
Weighing the benefits of buy-to-let property against these risks helps landlords decide if the investment is suitable. Overall, a well-planned strategy, realistic rental assumptions, and careful lender selection determine whether a buy-to-let is worth it.
Regulated vs unregulated buy-to-let
A consumer buy-to-let mortgage is regulated and intended for borrowers with a personal connection to the property, such as former residential occupiers or those who have inherited the property unexpectedly. Lenders must adhere to strict rules, including affordability checks and FCA oversight, to protect borrowers.
In contrast, investment buy-to-let mortgages are typically unregulated and intended for portfolio landlords or investors buying multiple properties. These products prioritize rental income and property value over personal affordability, providing lenders with greater flexibility but less consumer protection.
Understanding the distinction between regulated and unregulated products helps landlords choose the appropriate mortgage and maintain compliance with legal and lending requirements.
Why compare with Smart City Mortgages
A buy-to-let mortgage broker firm such as Smart City Mortgages streamlines the process and helps landlords secure the most suitable deals. By submitting your details once, you can compare offers from multiple lenders, review personalised options, and understand fees, rates, and eligibility requirements.
Our firm is FCA regulated, ensuring professional and compliant advice. We can also assist you early on in your journey with understanding LTV bands, deposit requirements, and rental income considerations, making the process faster, clearer, and more reliable for both new and experienced landlords.
The Smart City Mortgages experts are happy to tell you more
Frequently Asked Questions
A buy-to-let mortgage is a loan used to finance a property that is to be used toto rent to tenants. Lenders primarily assess rental income instead of personal income, and deposit requirements are higher. This approach ensures rental income covers monthly payments and reduces lender risk of the landlord defaulting or falling behind on the mortgage payments.
Monthly payments are usually interest-only, meaning you pay only the interest during the term. The principal and capital balance is repaid on/before the end of the term, often through property sale, refinancing, or accumulated savings and investments. Lenders consider the property’s rental potential when deciding how much to lend.
Most lenders require a deposit of 20–40% of the property value. A higher deposit lowers your LTV and may secure better rates. Some lenders accept 20%, though this is rare. Deposit size impacts eligibility and available deals.
Yes. Rates are generally higher because buy-to-let’s present a greater risk, and mortgage payments are expected to be funded on the expectation that the landlord will receive a sufficient and reliable rental income from the property. Rates vary by LTV, credit profile, property and mortgage type.
Lenders usually require rent to cover 125–145% of the mortgage interest payments. This ensures that even if rental income fluctuates, you can meet repayments. Some lenders also consider additional costs, such as maintenance and void periods, when calculating affordability.
The ICR measures the relationship between rental income and mortgage interest payments. For example, if the lender expects you to achieve a rent of £1,250 and the monthly mortgage interest payments are £1,000, the ICR is 125%. Lenders require this ratio to ensure a buffer above the mortgage cost.
Yes, but the criteria are stricter. Lenders typically require a larger deposit, a solid credit history, and proof that rental income will cover payments. First-time buyers may also face stricter affordability tests and higher scrutiny of the overall scenario.
No. These mortgages are for investment only. Living in the property will breach the lender’s terms and may lead to a prosecution for mortgage fraud, invalidate insurance, and result in penalties. Always declare your intended use accurately when applying.
The principal balance must be repaid in full. Common options include:
- Selling the property
- Refinancing to a new mortgage
- Using personal savings or other asset’s.
Plan your exit strategy in advance to avoid last-minute funding issues.
A typical application takes 2–4 weeks to be offered by a lender depending on the valuation and underwriting. Complex cases, such as portfolios or self-employed applicants, may take longer. Start early to allow time to compare deals and meet deadlines.
Arrangement fees, valuation fees, stamp duty, legal fees, and early repayment charges (if remortgaging early) can affect the total cost. Even small fees can change the effective interest rate, so compare deals by total cost, not just the headline rate.
The main types are:
- Fixed rate: stable payments over the term
- Tracker/variable rate: payments move with market rates
The right type depends on your cash flow, risk tolerance, and investment strategy.
Yes. Remortgaging can help you secure lower rates, release equity, or switch to a different product type. Always consider early repayment charges if you want to leave your current deal early, application fees, and LTV requirements when planning a remortgage.
Lenders review credit history to assess risk. A higher score can help you qualify for the cheapest product options. Defaults or high credit utilisation may limit eligibility and increase the cost of products available to you.
Yes. Lenders may review the total number of properties, combined mortgage obligations, and overall portfolio risk. Eligibility and rates may differ from those of single-property landlords.
Specialist products are available, but standard buy-to-let mortgages usually cover single-family rentals. HMOs, short-term lets, or commercial units may require different lending arrangements.
Most buy-to-let mortgages offer terms up to 25–35 years, though lenders may set limits based on borrower age, years remaining on a lease, and their risk appetite.
For standard buy-to-let mortgages, rental income is the primary source of income, but some lenders also consider personal income, especially for first-time landlords or those with smaller deposits.
Landlord insurance is often required and covers buildings, contents, and liability. Some lenders may also require mortgage payment protection or landlord legal insurance.
Ready to apply?
When you are ready to proceed, you can begin your buy to let mortgage application in the way that works best for you.
Ask a mortgage expert a question and get a professional answer.
