Limited Company Buy to Let: How SPV Mortgages Work

This guide provides general information and is not a substitute for personalised mortgage, tax or legal advice.

Written and reviewed by the Highhouse Money mortgage team · Last reviewed: 25 August 2026

A growing number of landlords buy rental property through a limited company rather than in their own name, largely because of how mortgage interest and profit are taxed. This structure — usually a special purpose vehicle, or SPV — comes with its own mortgage market, lender criteria and ongoing obligations.

This guide explains how SPV buy-to-let mortgages work in practice, what the tax trade-offs are, and the questions worth raising with an accountant before deciding whether a limited company suits your plans.

Limited company buy-to-let checklist

Decide with an accountant whether company ownership suits your tax position
Set up (or confirm) an SPV with an appropriate SIC code for property letting
Identify lenders that offer limited company buy-to-let mortgages
Understand the rental cover and stress-rate calculation the lender applies
Be prepared to give a personal guarantee as a director
Budget for accountancy, Companies House filing and corporation tax obligations
If transferring an owned property in, get tax advice on SDLT and CGT first
Compare rate, fees and tax treatment together, not rate alone

What an SPV is and why lenders prefer them

A special purpose vehicle is simply a limited company incorporated to hold and let property and generally nothing else. Lenders like this structure because the company's finances are easy to assess — there is no unrelated trading activity to complicate the picture — and it keeps the mortgaged asset ring-fenced from other business risk.

Most limited company buy-to-let lenders will expect the company to be registered with an appropriate Standard Industrial Classification (SIC) code relating to property letting, and many prefer companies with no trading history other than holding property.

The tax rationale, in outline

Individual landlords pay income tax on rental profit and, since reforms phased in over recent years, can no longer deduct mortgage interest in full when working out taxable profit — instead receiving a tax credit at a set rate. Companies pay corporation tax on profit and can typically still treat mortgage interest as a normal business expense, which is the core reason many landlords, particularly higher-rate taxpayers with several properties, consider the company route.

This is general information, not tax advice. Whether a limited company structure benefits you depends on your income, how you plan to use the profits, your long-term plans for the properties, and current tax rules, which change over time. Speak to an accountant before deciding.

How the mortgage itself differs

	Personal buy-to-let	Limited company (SPV) buy-to-let
Borrower	You, as an individual	The company, with director guarantees
Lender pool	Wide	Smaller, more specialist
Underwriting focus	Personal income, credit history, rental cover	Company structure, director credit history, rental cover
Ongoing admin	Self-assessment tax return	Company accounts, confirmation statement, corporation tax return
Exit route	Sell the property personally	Sell the property or, in some cases, sell the company

Personal guarantees and director liability

Because a new SPV typically has no financial track record or significant assets of its own, lenders almost always require the director (or directors) to provide a personal guarantee. This means that if the company cannot meet its mortgage payments, you can be pursued personally for the shortfall — the limited liability of the company structure does not remove this risk for mortgage debt.

Transferring an existing property into a company

If you already own a rental property personally and want to move it into a limited company, this is treated by HMRC as a disposal by you and an acquisition by the company — even though you may control both. That can trigger Stamp Duty Land Tax on the company's 'purchase' and Capital Gains Tax on your personal disposal, alongside legal and mortgage arrangement costs. For many landlords the numbers only work out favourably in specific circumstances, so this needs a proper tax review before you commit.

Ongoing obligations once you have an SPV

Annual company accounts filed with Companies House
An annual confirmation statement confirming company details
A corporation tax return filed with HMRC each year
Bookkeeping for rental income, expenses and mortgage interest
Accountancy fees, which should be weighed against any tax saving

What lenders may assess

The SPV's structure, SIC code and any trading history
Rental income for the property, tested against a stress-rated interest cover ratio
The personal financial position and credit history of the director(s) giving guarantees
Deposit and resulting loan-to-value
Experience of the director(s) as landlords, where relevant to the lender's criteria
Whether the wider portfolio, if any, sits within one company or several

Every lender sets its own criteria, which change regularly. The points above are common themes, not a guarantee of how any individual lender will treat an application.

Frequently asked questions

What is an SPV in buy-to-let lending?

A special purpose vehicle (SPV) is a limited company set up for the sole purpose of holding and letting property, rather than trading in other goods or services. Most lenders that offer limited company buy-to-let mortgages prefer or require the borrowing company to be an SPV, because it keeps the property's finances separate from any unrelated business activity.

Why do landlords use a limited company for buy-to-let?

The main driver is usually tax. Companies pay corporation tax on rental profit and can typically still deduct mortgage interest as a business expense, whereas individual landlords face restricted mortgage interest relief. Whether this is beneficial for you depends on your income tax band, how much profit you plan to extract and reinvest, and other personal factors — an accountant should confirm the numbers for your situation.

Are limited company buy-to-let mortgage rates higher?

Limited company products can carry different pricing and fee structures compared with personal buy-to-let mortgages, and the pool of lenders offering them is typically smaller. Comparing the total cost — rate, fees and tax treatment together — over the period you intend to hold the property gives a fairer picture than comparing headline rates alone.

Will I need to give a personal guarantee?

Most lenders require the company's director(s) to give a personal guarantee, meaning you remain personally liable if the company cannot meet its mortgage obligations. This is a standard feature of company buy-to-let lending, not a sign of a weak application.

Can I transfer an existing personally-owned property into a company?

Yes, but transferring a property you already own into a limited company is usually treated as a sale for tax purposes, which can trigger Stamp Duty Land Tax and Capital Gains Tax even though no money changes hands with a third party. This needs careful, personalised tax advice before proceeding — it is not always cost-effective.

Do I need a separate company for each property?

No, a single SPV can typically hold multiple properties, and many landlords consolidate a growing portfolio within one company. Some choose separate companies for different purposes or to ring-fence risk — this is a structuring decision best made with an accountant.

How is rental cover assessed for a limited company mortgage?

Lenders generally apply a similar interest cover ratio and stress-rate approach to company buy-to-let as they do for personal buy-to-let, checking the rental income against the mortgage interest with a safety margin. The company's accounts, if it has any trading history, may also be reviewed.

What ongoing obligations come with an SPV?

A limited company must file annual accounts and a confirmation statement with Companies House, and submit a corporation tax return to HMRC, generally with the help of an accountant. These administrative costs and duties should be weighed against the potential tax benefits.

Is limited company buy-to-let mortgage lending regulated by the FCA?

Limited company buy-to-let mortgages are generally treated as business lending and most fall outside FCA mortgage regulation, though some protections and standards still apply depending on the lender. Some buy-to-let and commercial mortgages are not regulated by the Financial Conduct Authority — always confirm the regulatory status of your specific product with your advisor.

Sources and further reading

Where figures or rules can change, the position described is correct at the time of writing (25 August 2026) — always check the linked authoritative source for the latest position.

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Specialist lending for HMOs and multi-unit freehold blocks.

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Advice for personal and limited company landlords, whole of market.

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For larger portfolios and mixed-use property.

Residential mortgages

If you also need advice on your own home.

Speak to a specialist

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