Stamp Duty for Limited Companies Buying Residential Property
Last updated 29 June 2026 · 9 min read · By the LandlordTaxAi Editorial Team
The short answer
A company buying residential property faces a fork in the road. Buy a home over £500,000 for a non-business reason and a brutal 17% flat rate hits the whole price. But run a genuine buy-to-let business letting to third parties and you escape that — paying the normal residential bands plus the 5% surcharge, just like an individual second-home buyer. Knowing which side you’re on is worth tens of thousands.
“Should I buy through a company?” is the question of the decade for landlords, driven largely by the Section 24 mortgage-interest squeeze. Most of the debate focuses on income tax. Far fewer people check the stamp duty entry cost — and that’s where companies meet a rule that looks terrifying at first glance, then turns out to be navigable for real landlords.
This guide unpacks the 17% “enveloping” charge, the property-rental-business relief that most buy-to-let companies rely on, the clawback trap, and the extras (non-resident surcharge, ATED). For the wider decision, read limited company vs personal buy-to-let.
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Company SDLT Calculator 2026
Estimate stamp duty on a company purchase at standard rates plus the 5% surcharge (the typical buy-to-let case).
Result
- SDLT (standard)
- £5,000
- SDLT (additional property, +5%)
- £20,000
- Extra paid as a landlord
- £15,000
England & NI. Adds the 5% surcharge. The separate 17% flat rate can apply to £500k+ homes without rental relief. Estimate only.
The starting point: the 5% surcharge always applies
Whatever else happens, a company buying residential property pays the 5% higher-rate surcharge on top of the standard SDLT bands — there’s no “first property” exemption for a company the way there is for an individual buying their only home. So even a modest buy-to-let bought in a company starts from the second-home rate sheet.
The 17% trap: “enveloping” expensive homes
On top of that sits a deliberately punitive charge. Since 31 October 2024, where a company (a “non-natural person”) buys a single residential dwelling worth more than £500,000, a single flat 17% rate can apply to the entire purchase price — not the gentle banded rates.
This was designed to stop people “enveloping” their own luxury home inside a company to dodge tax. On a £700,000 property, 17% is £119,000 — the kind of number that ends a plan on the spot. The crucial point is that it only bites when no relief applies.
If you’re tempted to buy a high-value home through a company for a director to live in, the 17% charge (plus annual ATED) is exactly the wall the rules build in your way.
The relief most landlords actually use
Here’s the reassuring part for genuine investors. If the company is carrying on a property-rental business and acquires the dwelling to let to unconnected third parties, property-rental-business relief disapplies the 17% rate. The company instead pays the ordinary residential bands plus the 5% surcharge — the same effective cost as an individual buying an additional property.
In other words: a normal buy-to-let company doing what buy-to-let companies do does not pay 17%. The flat rate is aimed at private use dressed up as a company purchase, not at landlords letting commercially.
Model the true cost before you incorporate
LandlordTaxAi helps you keep clean company property records from day one — so the SDLT, ATED and income-tax picture of a company structure is based on real figures, not guesswork.
See how it worksA worked example
A company buys a £600,000 house. Compare a genuine let with an enveloped private home.
| Scenario | SDLT basis |
|---|---|
| Let to third parties (rental business) | Standard bands + 5% surcharge |
| Bought for a director to live in | 17% flat = £102,000 |
| Non-UK-resident company | Add 2% non-resident surcharge |
| Occupied by connected person within 3 years | Relief clawed back to 17% |
Same £600,000 house: as a genuine let it costs a manageable surcharge; as an enveloped private home it costs £102,000 in SDLT alone. The use of the property — not the company wrapper — decides the bill.
Two traps and an annual charge
- The 3-year clawback. If the property starts being occupied by a non-qualifying individual (a director, shareholder or connected person) within three years, the relief is withdrawn and the 17% applies retrospectively, with interest.
- The non-resident surcharge. A non-UK-resident company adds 2% on top of all other residential rates.
- ATED. Company-held residential property worth over £500,000 can attract the Annual Tax on Enveloped Dwellings — unless a relief (such as letting to third parties) applies, which it usually does for a genuine rental business.
Frequently asked questions
Do companies pay more SDLT than individuals?
Often. A company always pays the 5% surcharge, and on £500k+ homes can face a 17% flat rate unless a relief like property-rental-business relief applies.
What is the 17% flat rate?
Since 31 October 2024, companies buying a single dwelling over £500,000 can pay a flat 17% on the whole price instead of banded rates — unless relieved.
How does a buy-to-let company avoid 17%?
By running a genuine rental business letting to unconnected third parties — property-rental-business relief then applies, leaving standard bands plus the 5% surcharge.
What does a typical BTL company pay?
Ordinary residential rates with the 5% surcharge on every band — the same as an individual buying a second property.
Can the relief be taken away?
Yes — if a non-qualifying individual occupies within three years, the relief is clawed back and 17% applies with interest.
Anything else on top?
A non-resident company adds 2%, and company-held homes over £500,000 can fall within ATED unless relieved.
Written and reviewed by the LandlordTaxAi Editorial Team. Our guides are reviewed against current HMRC guidance and updated when the rules change. Operated by LandlordTaxAi, United Kingdom. Follow us on LinkedIn.
Last reviewed: 29 June 2026 · Researched against primary UK sources for the 2026/27 tax year: https://www.gov.uk/guidance/stamp-duty-land-tax-corporate-bodies; https://www.gov.uk/government/publications/stamp-duty-land-tax-increase-to-the-higher-rates-of-stamp-duty-land-tax-and-to-the-single-rate-payable-by-non-natural-persons; https://www.gov.uk/guidance/stamp-duty-land-tax-buying-an-additional-residential-property. This article is informational only and is not a substitute for advice on a transaction of this size — speak to a qualified accountant or solicitor.