Should you set up a buy-to-let limited company?

Are you thinking about investing in a rental property?

While you’d think managing it through a buy-to-let limited company would be overkill, there are compelling reasons to do it even if your plan is just to make some extra cash on the side.

Here’s how owning a rental property through a buy-to-let company differs from owning it in your own name, and a look at the pros and cons.

Why own property through a buy-to-let limited company?

Owning property through a buy-to-let limited company can have three key benefits:

1. It can limit your financial exposure
2. It can make succession planning easier
3. It can be more tax-efficient than owning the property in your own name in some circumstances

Limited companies have a separate legal personality. This means the buy-to-let company, not you personally, is the legal owner of the property.

Let’s say a tenant decides to sue because they’re unhappy with the state of the property.

If you owned the property in your own name, the claim would normally be made against you personally. If the property is owned by a limited company, the company would normally be the defendant instead.

The position is similar with the company’s other debts. As a shareholder, your liability is normally limited to any amount unpaid on your shares.

However, it’s important to note that many buy-to-let mortgage lenders require personal guarantees from directors, which can reduce or remove this limited liability protection in relation to the mortgage debt.

Directors can also become personally liable in certain other circumstances, so incorporation does not provide absolute protection from every business risk.

Succession planning

A buy-to-let limited company’s separate legal personality can also make it easier to pass an interest in the property business to someone else in the future, such as your spouse, partner or children.

When you own a property in your own name, transferring it to someone else usually involves transferring legal ownership of the property itself.

With a buy-to-let limited company, you can instead transfer some or all of your shares in the company. The company continues to own the property, so transferring the shares does not itself require a transfer of the property’s legal title.

If shares are sold for consideration, Stamp Duty on shares is generally charged at 0.5% where the relevant rules apply.

However, transferring or gifting shares can still have Capital Gains Tax and Inheritance Tax consequences. Transfers between spouses or civil partners have their own tax rules, and gifts to other family members do not automatically escape tax simply because the underlying property remains inside the company.

Professional tax advice is essential before using a property company for succession planning.

The tax benefits of a buy-to-let limited company

Aside from limiting financial risk and making succession planning easier, a buy-to-let limited company can offer significant tax advantages in some circumstances.

1. Rental profits are taxed within the company

If you own a property in your own name, the rent you earn counts as property income and is taxed at your applicable personal income tax rate. National Insurance does not normally apply to rental income.

This can significantly increase your tax liability if the income pushes you into a higher tax band.

Imagine you earn £50,000 a year from your salaried day job and £9,600 a year from your rental property.

Because you own the property in your own name, the £9,600, less allowable expenses such as maintenance, insurance and agency fees, will count as property income.

Let’s say you’ve made £1,000 in allowable expenses, excluding mortgage interest, which is treated separately.

The remaining £8,600 would increase your taxable income to £58,600, pushing £8,330 into the higher-rate band.

For the 2026/27 tax year, this means:

• Income tax: £0 on the first £12,570, 20% on the next £37,700 and 40% on the remaining £8,330 = £10,872
• Class 1 National Insurance on the £50,000 salary only: £2,994

Total personal income tax and NI liability: £13,866.

In comparison, a buy-to-let limited company pays Corporation Tax on its taxable profits.

For 2026/27, the Corporation Tax rate is 19% for companies with profits of £50,000 or less and 25% for companies with profits above £250,000, with marginal relief potentially applying between the two thresholds. The thresholds can be reduced where there are associated companies.

You can then extract the after-tax profit as dividends.

The dividend allowance is £500. For 2026/27, dividends above the allowance are taxed at 10.75% at the ordinary rate, 35.75% at the upper rate and 39.35% at the additional rate.

Without mortgage interest, the company route may not save tax here, but the difference can become more significant where substantial finance costs are involved.

2. Companies can deduct mortgage interest as a business expense

One of the main tax differences between individual landlords and property companies concerns mortgage interest.

Individual residential landlords cannot normally deduct mortgage interest in full from rental income. Instead, finance costs generally qualify for a basic-rate tax reduction of 20%.

A limited company, by contrast, can generally deduct qualifying interest costs when calculating its taxable property business profits.

To use our previous example, if your salary is £50,000 a year, your rental income is £9,600, your other allowable expenses are £1,000 and the interest on your mortgage is £4,600:

• You’d pay income tax based on property profits before the finance-cost tax reduction: £10,872 as calculated above.
• You’d receive a 20% tax reduction on £4,600 of qualifying mortgage interest: £920.

Net total for the individual: £12,946, comprising £10,872 income tax less the £920 finance-cost reduction, plus £2,994 NI on salary.

By contrast, the limited company can deduct the £4,600 interest when calculating its taxable profit:

£9,600 rental income – £1,000 other expenses – £4,600 interest = £4,000 company profit.

• Corporation Tax at 19%: £760
• Income tax and NI on the £50,000 salary: £10,480 (£7,486 income tax + £2,994 NI)
• After Corporation Tax, £3,240 remains. After the £500 dividend allowance, £2,740 is taxable at the 35.75% higher dividend rate: £979.55
• Total tax and NI: £12,219.55

In this simplified example, the company route produces a saving of approximately £726 compared with owning the property personally.

These calculations are illustrative only. In practice, the result depends on factors including your other income, company profits, mortgage costs, how much income you extract from the company and whether profits are retained.

3. Companies pay Corporation Tax on property gains rather than Capital Gains Tax

As an individual landlord, you may have to pay Capital Gains Tax if you sell a rental property for more than its allowable cost.

For 2026/27, individuals have an annual exempt amount of £3,000. Gains are generally taxed at 18% to the extent they fall within the unused basic-rate band and 24% above it.

Limited companies do not pay Capital Gains Tax. Instead, chargeable gains form part of the company’s profits for Corporation Tax purposes.

The company does not receive the individual’s £3,000 annual CGT exemption, and Corporation Tax may be charged at 19%, 25% or an effective marginal rate between those figures depending on the company’s overall profits.

So holding a property through a company does not mean the gain is tax-free. Whether the company route produces a lower overall tax bill depends on the figures and on what happens to the sale proceeds afterwards.

What if you already own the rental property personally?

There is an important difference between buying a new property through a company and transferring an existing personally-owned rental property into one.

Moving an existing property to your company is normally treated as a disposal by you and an acquisition by the company. This can potentially trigger Capital Gains Tax for you and Stamp Duty Land Tax for the company, depending on the circumstances.

Reliefs may be available in particular situations, but they are not automatic. The upfront tax costs of incorporation can sometimes outweigh years of future tax savings, so this is an area where professional advice is especially important.

The disadvantages of buy-to-let limited companies

While buy-to-let limited companies can offer compelling benefits, there are downsides you’ll need to consider.

As mentioned above, companies do not receive the individual’s £3,000 Capital Gains Tax annual exemption, and gains on property disposals are still taxed through Corporation Tax.

Owning a property through a company can also be more expensive to finance and administer.

Not every lender offers buy-to-let mortgages to limited companies, and rates, fees and lending criteria can differ from those available to individual landlords.

An old Which? comparison from 2019 found higher rates for limited-company borrowing at the time, but mortgage pricing changes constantly, so current products should be compared rather than relying on historic rate differences.

Buy-to-let companies also have running costs you wouldn’t incur as an individual landlord.

Alongside the initial cost of setting up a limited company, you must prepare annual accounts and comply with Companies House and Corporation Tax filing requirements.

Accountants tend to charge higher fees for limited company accounts because they can be more complex.

You’ll also have to file an annual confirmation statement. The current digital filing fee is £50.

Property income tax rates are changing from April 2027

The calculations above use the ordinary Income Tax rates that apply to property income in 2026/27.

From 6 April 2027, separate rates are due to apply to property income in England, Wales and Northern Ireland: 22% at the property basic rate, 42% at the property higher rate and 47% at the property additional rate.

This will change the comparison between personal and company ownership from 2027/28 onwards, so landlords should use the rates for the tax year in question when comparing structures.

You don’t need to be an aspiring property mogul to consider a buy-to-let company

A buy-to-let limited company can be worth considering whether you plan to own one property or a larger portfolio, particularly where mortgage interest is significant or you intend to retain profits within the company.

But incorporation is not automatically the most tax-efficient choice. Mortgage costs, Corporation Tax, dividend tax, administration costs and the tax cost of transferring an existing property can all affect the outcome.

An accountant can do the maths based on your individual circumstances and help you compare personal and company ownership properly.

Don’t rely solely on the information contained in this article. The calculations are for illustrative purposes only. Talk to an accountant or tax adviser to work out calculations based on your own individual circumstances.