The best buy-to-let mortgage lenders for UK landlords in 2026

The best buy-to-let mortgage lender depends on how you hold the property and how many you own. For a single property in your own name with a clean credit file, a mainstream lender such as Barclays, NatWest or BM Solutions will usually price lowest. For a limited company, four or more mortgaged properties, or an HMO, the specialist lenders, led by The Mortgage Works, Paragon, Landbay, Fleet, Aldermore and Foundation Home Loans, will lend where the high street will not. This guide compares 12 UK buy-to-let lenders on criteria rather than headline rates, because rates change weekly and criteria decide whether you get an offer at all. Criteria stated here were checked on 5 September 2026 and lenders change them without notice.

If you need the mechanics first, read our guide to how buy-to-let mortgages work. Whether the numbers still stack up is a separate question, and we answer it in is buy-to-let worth it in 2026.

Which lender suits which landlord

Match the lender to your situation before you compare a single rate.

How lenders decide whether to lend to you

Getting a buy-to-let mortgage is not difficult if your rent covers the stressed payment and you have a 25% deposit; it becomes difficult when either of those fails. Lenders assess buy-to-let on the property's income rather than your salary, using three tests.

Interest coverage ratio. Every lender applies an interest coverage ratio, usually 125% or 145% of the mortgage payment at a stressed rate. Basic-rate taxpayers and limited companies are normally assessed at 125%; higher-rate taxpayers borrowing personally at 145%, because Section 24 removed full mortgage interest relief for individuals.

Stress rate. The Prudential Regulation Authority's Supervisory Statement SS13/16 requires lenders to test affordability at a minimum of 5.5% during the first five years of the contract unless the rate is fixed for five years or more, in which case the pay rate can be used. The PRA updated SS13/16 in January 2026, with lenders required to implement the revisions by January 2027 (Bank of England, SS13/16, January 2026 update).

Loan-to-value. Most lenders cap at 75%, so a 25% deposit is the working assumption. Precise, Fleet and Leeds go to 80% on some products, and The Mortgage Works accepts a 20% deposit where the property has an EPC rating of C or above; 85% is rare and expensive.

Almost all buy-to-let lending is interest-only, which keeps the monthly payment low but leaves the capital to repay at the end. Run your figures through our buy-to-let mortgage calculator before you shortlist lenders.

Two regulatory points change which lenders are open to you. First, the PRA's definition of a portfolio landlord is four or more distinct mortgaged buy-to-let properties, counted across all lenders, and it triggers a specialist underwriting process that some mainstream lenders decline to run. Second, landlords who let to a family member, or who became landlords by accident, may need a consumer buy-to-let mortgage, which is regulated under the Mortgage Credit Directive Order 2015 and offered by fewer lenders.

What we compared

We assessed each lender on seven criteria: maximum loan-to-value, minimum interest coverage ratio, whether it lends to limited companies, whether it accepts portfolio landlords without a cap, whether it offers HMO and multi-unit products, whether you can apply direct or only through a broker, and how it handles non-standard income or credit. We did not rank on rate. Most of the specialist lenders below are broker-only, so read our guide to choosing a buy-to-let mortgage broker before you apply.

The 12 lenders compared

Criteria as published by each lender or reported in the trade press on 5 September 2026. Confirm with the lender or your broker before applying.

1. The Mortgage Works: best overall

The Mortgage Works is the buy-to-let arm of Nationwide Building Society and the lender most brokers try first for a standard or limited company application. It has no maximum portfolio size, prices limited company products at only a small premium over personal ones, and applies a 125% coverage ratio to both. Since Virgin Money joined Nationwide, its former buy-to-let range sits here too. You can apply direct through The Mortgage Works' own site or through a broker, and it will accept a 20% deposit where the property holds an EPC of C or above. Limited company applications are capped at two directors or shareholders.

2. BM Solutions: best mainstream value

BM Solutions is Lloyds Banking Group's buy-to-let brand and one of the largest lenders in the sector by volume. It combines mainstream pricing with efficient processing and accepts portfolio landlords under sensible criteria. It is broker-only, and it changes criteria more often than most, so check the current position on the day you apply.

3. Paragon Bank: best for portfolio landlords

Paragon is the specialist lender built around professional landlords. It welcomes portfolios with no upper limit, underwrites limited companies and HMOs as a matter of routine, and its underwriters expect to read a full portfolio schedule rather than treat it as an exception. Rates sit above the high street and it is not the cheapest route to a single standard let.

Specialist lenders ask for a portfolio schedule showing every property, its mortgage, its rent and its costs. August's portfolio reports produce that schedule from the data you already hold, which is the difference between a two-day and a two-week application.

4. Landbay: best for limited company and HMO lending

Landbay is a broker-only specialist that lends to limited companies, portfolio landlords, first-time landlords and both small and large HMOs and multi-unit freehold blocks, with loans up to £1.5 million on larger cases. Its variable fee structure lets you trade a higher product fee for a lower rate to improve affordability, which is useful when coverage is tight. It launched product transfers in 2025 for landlords refinancing with the lender.

5. Fleet Mortgages: best limited company specialist

Fleet Mortgages lends only to landlords and has built its range around limited company borrowing, portfolio landlords and HMOs, with products up to 80% loan-to-value and a reputation among brokers for consistent criteria. In March 2026 it removed its minimum income requirement altogether. It is broker-only and the primary applicant must have owned a property for at least 12 months, so it does not lend to first-time buyers.

6. Aldermore: best for self-employed landlords

Aldermore takes a common-sense approach to income, will consider a single year of accounts, and lends to limited companies and portfolio landlords. Contractors, freelancers and business owners who fail a high-street income check often succeed here. It is broker-only and product fees can be higher than mainstream.

7. Kent Reliance: best for complex and large HMOs

Kent Reliance, part of OSB Group, is the lender for large HMOs, multi-unit blocks, complex ownership structures and expat landlords. Manual underwriting means it can say yes to cases that fail an automated decision, at a rate that reflects the work.

8. Precise: best for adverse credit and higher LTV

Precise, also part of OSB Group, offers up to 80% loan-to-value and accepts historic credit issues, complex income and non-standard property. It is the lender to try when mainstream underwriting has already declined you, and its pricing reflects that role.

9. Foundation Home Loans: best for HMO and multi-unit

Foundation Home Loans specialises in HMOs, student lets and multi-unit freehold blocks, with limited company and portfolio criteria to match. It understands licensing and multi-tenant income assessment better than most, and is not competitive for a simple single let.

10. Shawbrook: best for larger loans and mixed use

Shawbrook lends on standard buy-to-let, HMOs, multi-unit blocks and semi-commercial property, with an appetite for larger loans and professional landlords. It is broker-only and suits landlords whose next purchase is bigger or more mixed than their last.

11. Molo: best for applying online without a broker

Molo is a digital buy-to-let lender that lets landlords apply direct online, including limited companies and portfolio landlords. It suits landlords with straightforward cases who want speed and do not want to pay a broker fee.

12. Barclays: best for the lowest rates on simple cases

Barclays often prices among the lowest headline buy-to-let rates, particularly at 60% loan-to-value or below, and you can apply direct. Unusually, it dropped its fixed rental coverage ratio in December 2016 in favour of a full income and expenditure assessment at a 5.5% stress rate, with a £25,000 minimum income, so personal income can make up a rental shortfall. Its restricted appetite for portfolio landlords and limited companies (reported as existing customers only) mean it suits a single property in personal name with a large deposit. NatWest and HSBC play a similar role, with NatWest offering limited company lending under stricter criteria than the specialists.

Limited company buy-to-let lenders

Buying through a special purpose vehicle changes which lenders will consider you and what rate you pay. The Mortgage Works, Paragon, Landbay, Fleet, Kent Reliance, Aldermore, Foundation, Molo and, since July 2023, Leeds Building Society all lend to limited companies; Barclays restricts it. Limited company rates typically carry a premium of 0.2 to 0.5 percentage points over personal rates, but the 125% coverage ratio usually more than offsets it for a higher-rate taxpayer. Whether incorporating is right for you is a tax question first and a lending question second; our guide to forming a limited company as a landlord covers the tax side.

From working with self-managing landlords across the UK, the pattern we see most often is a landlord who incorporates for tax reasons and only then discovers their existing lender will not transfer the mortgage into the company, forcing a full remortgage with the stamp duty surcharge on the transfer. Check lender appetite before you incorporate, not after.

Lenders for portfolio landlords

Portfolio landlords running four or more mortgaged properties face a different underwriting process entirely, which is why we built a dedicated page for portfolio landlords. Paragon, The Mortgage Works, Landbay, Fleet, Molo (up to 50 properties) and Shawbrook underwrite portfolios as standard. Barclays restricts them, and Leeds applies its portfolio criteria once the company and its directors hold four or more mortgaged properties in aggregate. Expect to supply a full portfolio schedule, a business plan for larger portfolios, and evidence that the whole portfolio, not just the new purchase, passes the lender's stress test.

Lenders for HMOs and multi-unit blocks

Foundation Home Loans, Paragon, Landbay, Kent Reliance and Shawbrook offer dedicated HMO and multi-unit freehold products; most mainstream lenders exclude both. Lenders distinguish small HMOs (usually up to six bedrooms) from large ones, and price the larger licensed properties higher. Bring the licence, or the licence application, to the application.

Direct lenders versus broker-only lenders

Nine of the twelve lenders above will not accept an application from you directly. The Mortgage Works, Barclays, Molo and the other high-street banks lend direct; BM Solutions, Paragon, Landbay, Fleet, Aldermore, Kent Reliance, Precise, Foundation and Shawbrook require a broker. For anything beyond a single standard let in personal name, that makes a whole-of-market buy-to-let broker close to unavoidable.

Remortgaging and product transfers

When a fixed rate ends, most lenders now offer a product transfer that keeps you with the same lender without a fresh affordability assessment. SS13/16 exempts like-for-like remortgages with no additional borrowing from the affordability expectations, which is why a product transfer can succeed where a new application would fail. Remortgaging with tenants in place has its own wrinkles, covered in our remortgaging a rental entry.

How to prepare an application that gets an offer

Lenders decline buy-to-let applications for missing paperwork far more often than for weak numbers. Have ready: three months of bank statements showing rent received, the tenancy agreement, the EPC (lenders will not lend on an F or G rating), proof of deposit, and for portfolio landlords a schedule of every property with its mortgage balance, monthly payment, rent and lender.

Across the portfolios managed on August, the landlords who refinance fastest are the ones whose rent, mortgage and expense history is already reconciled, because the lender's questions are answered by a report rather than a search through statements. Whatever lender you choose, your mortgage interest is your largest deductible cost, and August's expense tracking records it against the right property automatically.

One cost that is not a lending criterion but changes the maths: the additional-property stamp duty surcharge in England and Northern Ireland has been 5% since 1 April 2025 (gov.uk, higher rates for additional dwellings), so a £250,000 purchase carries £12,500 of surcharge on top of standard rates.

Frequently asked questions

Who offers the best buy-to-let mortgages?

The Mortgage Works offers the best all-round package for most landlords, with Paragon the specialist choice for portfolios of four or more properties and Barclays the cheapest for a single property in personal name with a large deposit. The best lender is the one whose criteria you meet at the lowest total cost, so compare fee plus rate over the fixed term rather than the headline rate alone.

How much deposit do I need for a buy-to-let mortgage?

25% is the working minimum, because most lenders cap at 75% loan-to-value. Precise goes to 80%, and a small number of lenders offer 85% at a premium. A 40% deposit unlocks the lowest rates on the high street.

Is it difficult to get a buy-to-let mortgage?

No, if the rent covers 125% to 145% of the mortgage payment at a 5.5% stress rate, you have a 25% deposit, and your credit file is clean. It becomes difficult when the rent falls short of the coverage ratio, which is the single most common reason for a declined application.

Can I get a buy-to-let mortgage through a limited company?

Yes. Most specialist lenders and a growing number of mainstream ones lend to limited companies, usually at a premium of 0.2 to 0.5 percentage points over personal rates and at a 125% coverage ratio.

Do I need August to get a buy-to-let mortgage?

No. You need a lender whose criteria you meet and the paperwork to prove it. August keeps that paperwork current, so the reports a lender asks for already exist when you apply. You can start for free.

This article is general information, not financial advice. Lender criteria change without notice; confirm with the lender or a regulated mortgage broker before applying. Your property may be repossessed if you do not keep up repayments on a mortgage secured on it.