If you own or are planning to build a property portfolio, structuring your investments through a limited company could offer significant tax advantages and long-term financial benefits. A limited company buy-to-let mortgage is a specialist product designed for landlords who hold rental properties through a company rather than in their personal name. Since tax reforms came into force in 2017, this approach has become one of the most widely used strategies among serious property investors in the UK.
The Financial Conduct Authority does not regulate taxation advice and some aspects of buy to let mortgages.
What Is A Limited Company Buy To Let Mortgage?
A limited company buy-to-let mortgage enables landlords to purchase and manage rental property through a company structure, rather than as an individual. The company — most commonly set up as a Special Purpose Vehicle (SPV) — is the legal owner of the property, and the mortgage is secured against it.
The defining advantage of this structure lies in how rental income and mortgage costs are taxed. Unlike personal buy-to-let mortgages, where mortgage interest relief has been significantly restricted since the introduction of Section 24, limited companies can offset 100% of mortgage interest payments against corporation tax. Rental profits are then taxed at the current corporate rate of between 19% and 25%, rather than personal income tax rates of up to 45%. For higher-rate and additional-rate taxpayers, this difference can be substantial.
The Rise Of Limited Company But-To-Let In The UK
The shift towards limited company ownership among UK landlords has been one of the most significant trends in the private rented sector over the past decade. When Section 24 was phased in between 2017 and 2020, it removed the ability for individual landlords to deduct mortgage interest from rental income before calculating tax, replacing it with a basic-rate tax credit. For higher-rate taxpayers, this created a substantially higher tax burden — often making personally held properties far less profitable.
The response from the landlord community has been clear. Research by Hamptons found that the number of limited companies set up to hold buy-to-let property more than doubled between 2017 and 2022, with over 300,000 active property SPVs registered in the UK. This trend has continued into 2026, with both experienced investors and newer landlords increasingly opting for the limited company route as mortgage rates remain elevated and tax efficiency becomes even more critical to portfolio profitability.
How Does A Limited Company Buy-To-Let Mortgage Work?
In practice, a limited company buy-to-let mortgage functions in much the same way as a standard buy-to-let mortgage — but with some important differences in how the lending is assessed and how the income is treated.
The mortgage is taken out in the name of the company, not the individual. Lenders will assess the application based on the projected rental income of the property, using what is known as an Interest Coverage Ratio (ICR) — a calculation that considers if rental income sufficiently covers the mortgage payments. For limited company applicants, lenders often apply an ICR of 125%, compared to 145% typically required for personal buy-to-let mortgages, which can mean greater borrowing power in some cases.
Lenders will also look at the background of the directors and shareholders, including their personal credit history and income, even though the mortgage itself is in the company’s name. This means a strong personal financial profile remains important when applying through a limited company structure.
All allowable business costs — including mortgage interest, insurance premiums, lettings agent fees, and maintenance — can be offset against the company’s taxable profits, reducing the corporation tax liability.
What Is A Special Purpose Vehicle (SPV)?
A Special Purpose Vehicle, or SPV, is a limited company created for the specific purpose of buying, holding, and managing property. It has no other business activity and exists purely as a vehicle for property investment. Using an SPV is the standard approach when taking out a limited company buy-to-let mortgage, and most lenders will require this structure rather than lending to a trading company.
Setting up an SPV is straightforward and can be done through Companies House. Once registered, the company will need its own business bank account, and the directors will be responsible for filing annual accounts and corporation tax returns. The process is not complicated, but working with an accountant experienced in property SPVs is strongly recommended from the outset.
The Advantages Of Limited Company Buy-To-Let Mortgages
For the some investors, the benefits of holding property through a limited company are considerable. Higher-rate taxpayers can make significant savings by paying corporation tax on rental profits rather than personal income tax, and the ability to offset 100% of mortgage interest is a major advantage in a higher interest rate environment.
Beyond the immediate tax savings, limited company ownership opens up more sophisticated options for estate planning and wealth transfer. Shares in a property company can be gifted or passed on in ways that may be more tax-efficient than transferring property personally. For landlords with larger portfolios, the ability to retain profits within the company and reinvest them — rather than drawing them out as income — can also support faster portfolio growth.
Limited company structures can also be beneficial from a borrowing perspective. With lenders applying a lower ICR threshold than they do for personal buy-to-let applications, it is sometimes possible to borrow more through a company than would be achievable personally.
Limited Company Buy-To-Let Mortgage Rates In 2026
Rates for limited company buy-to-let mortgages are generally slightly higher than equivalent personal buy-to-let products. This reflects the additional complexity and perceived risk from a lender’s perspective. However, for higher-rate taxpayers, the tax savings achieved through the limited company structure will frequently more than compensate for the small rate differential.
The gap between personal and limited company BTL rates has narrowed in recent years as more lenders have entered this space, increasing competition and improving the range of products available. Working with a specialist mortgage broker who has access to the whole of the market — including high street banks, challenger lenders, and private banks — gives you the best chance of securing competitive rates suited to your circumstances.
How To Apply For A Limited Company Buy-To-Let Mortgage
The application process for a limited company buy-to-let mortgage involves several steps, each of which benefits from specialist guidance.
The first step is to register your SPV with Companies House. You will need to select the appropriate SIC code for property investment activities and open a dedicated business bank account for the company. Your accountant can help with this setup.
Before progressing, we strongly recommend consulting a qualified tax adviser. They can confirm whether the limited company structure is the most suitable choice for your individual circumstances, advise on remuneration strategies, and help you understand your ongoing corporation tax obligations.
Once your company is in place and you have received tax advice, the next step is to engage a specialist limited company buy-to-let mortgage consultant. This is not a mainstream product, and working with a broker who has access to a panel of 300 or more lenders — across high street, specialist, and private banking channels — is essential to finding a suitable product.
You will need to prepare a set of documents for the application, including your company formation documents, details of the directors and shareholders, property valuations, and projected rental income. The lender will use this information to assess affordability based on their ICR requirements, and will also consider the personal financial backgrounds of those involved in the company.
Once the application is submitted and the lender’s criteria are met, a formal mortgage offer will be issued.
Your property may be repossessed if you do not keep up repayments on your mortgage.
The Financial Conduct Authority does not regulate taxation advice and some aspects of buy to let mortgages.
The information provided is for general information purposes only and does not constitute tax advice. The tax treatment referred to is based on current tax rules, which may change and will depend on your individual circumstances. Before progressing, we strongly recommend consulting a qualified tax adviser.
