Guide · 10 min read
What a limited company pays in SDLT on a buy-to-let purchase: standard bands plus the 5% surcharge, the 8% ADS in Scotland, the flat corporate rate above £500k, and ATED.
Written by Matt Lenzie · Published 10 June 2026
Advice from
Matt Lenzie · 25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ raised for property clients.
25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ raised for property clients.
Stamp duty for a limited company buying buy-to-let is the standard SDLT calculation plus a 5% surcharge on the entire purchase price, with no first-property exemption. It is the largest transaction cost a property company faces, it cannot be mortgaged, and it is the line item we most often see under-budgeted when a company case reaches us with the deposit already committed.
It is also, in fairness, a known and fixed quantity: unlike the mortgage rate or the rent, the duty can be calculated to the pound before you offer on anything, which makes under-budgeting it the most avoidable error in company buy-to-let. The rules differ across England and Northern Ireland, Scotland and Wales, step up sharply above £500,000, and interact with the deposit in ways underwriters check.
This guide sets out the company position across the three British tax regimes, the higher-value traps (the flat corporate rate and ATED), the worked numbers, and the legitimate reliefs, along with how the duty interacts with the mortgage itself.
In England and Northern Ireland, a company buying residential property pays SDLT at the higher rates: each standard band plus 5 percentage points, charged on the full price from the first pound of the surcharge element. The standard residential bands (0% to £125,000, 2% to £250,000, 5% to £925,000, 10% to £1.5 million, 12% above) each gain the 5% addition, so a company's effective schedule runs 5%, 7%, 10%, 15% and 17% through the same thresholds.
Two facts about that surcharge catch new property companies out, and both flow from the same principle: the company is never treated as a first-time anything. It applies to the company's first purchase: the "additional dwelling" framing misleads, because for a company every dwelling is treated as additional, even when the company owns nothing else. And no first-time buyer relief is available to a company under any circumstances, however personal the directors' situations.
Take a £250,000 buy-to-let bought by an SPV in England:
At £400,000 the same arithmetic gives £10,000 of standard-band tax plus £20,000 of surcharge: £30,000 all in, 7.5% of the price. At £150,000, a common figure in higher-yield northern markets, the bill is £500 of standard-band tax plus £7,500 of surcharge: £8,000, still more than 5% of the price. The proportion climbs with the price, but it never falls far below the surcharge floor, which is why the duty belongs in the cash-requirement model next to the deposit, not as an afterthought. Our buy-to-let stamp duty calculator runs all three British regimes on your exact figures.
For buy-to-let, usually not, and the comparison is worth being precise about because it is the most repeated misconception in the niche. An individual buying an additional residential property, which is what a buy-to-let almost always is for an existing homeowner, pays exactly the same higher rates as a company: standard bands plus the 5% surcharge. On the £250,000 example, landlord and SPV both pay £15,000. The structure decision is tax-neutral at the point of purchase for most working landlords, and the real stamp duty differences sit at the edges:
So the honest framing is not "companies pay more stamp duty" but "companies always pay the landlord rate, with no personal-circumstances escape hatches". For an established landlord buying their fourth property, the duty is identical either way, and the structure decision should be made on Section 24, corporation tax and lending grounds instead.
Scotland charges Land and Buildings Transaction Tax (LBTT) rather than SDLT, and the company addition is the Additional Dwelling Supplement at 8% of the entire purchase price, on top of the LBTT bands. On a £250,000 Glasgow purchase the supplement alone is £20,000, which makes Scotland materially the most expensive regime for company acquisitions and a number worth knowing before you commit to a Scottish yield play. Scottish yields often justify the toll regardless, but the appraisal has to carry the real number, not the English one.
Wales charges Land Transaction Tax (LTT) with its own higher-rate schedule for companies and additional dwellings; the structure mirrors the English approach with different bands and percentages. The principle is constant across all three nations: a company always pays the higher rates, everywhere in Great Britain, and Northern Ireland follows the English SDLT rules.
Filing and payment deadlines also differ slightly by nation, but the working rule is the same: the return and the money are due within days of completion, not months, and your conveyancer will require cleared funds for the duty before completing. For an SPV that means the duty must be inside the company, via the director's loan, before completion day, a sequencing detail that has delayed more than one purchase we have rescued mid-transaction.
Above £500,000, a different regime can engage: companies (and other "non-natural persons") buying a single dwelling for more than £500,000 are potentially within a flat higher rate on the whole price, set at 17% since late 2024 (it was 15% before that). It exists to discourage enveloping expensive homes into companies for ownership-disguise reasons.
The reassurance for landlords: relief is available where the property is acquired for a genuine property rental business, which returns the purchase to the normal company calculation, standard bands plus the 5% surcharge. Virtually every legitimate buy-to-let SPV claims it. The caveats: the relief is claimed, not automatic, it can be clawed back if the use changes within three years, and the conveyancer needs to know the company's intentions clearly. If your SPV is buying above £500,000, raise it with your solicitor early, and with your accountant alongside.
The Annual Tax on Enveloped Dwellings is the recurring cousin of the flat rate: an annual charge on companies holding residential property worth more than £500,000, banded by value and revalued on a fixed cycle. Like the flat SDLT rate, it carries a relief for dwellings genuinely let to third parties on commercial terms, so an ordinary letting SPV with a £600,000 asset does not pay the charge, but it must still file an annual relief declaration with HMRC to claim the relief. The filing is routine accountant work; the penalty for forgetting it is not, since late ATED returns attract penalties even when no tax was ever due. Below £500,000 per dwelling, ATED is simply out of scope, which keeps the typical regional buy-to-let portfolio clear of it entirely.
At the margins, yes; in the main, no. The genuine levers:
What does not work: artificial purchase-price splitting, fixture-value inflation, and packaged avoidance schemes, all well-trodden ground for HMRC enquiries. Note also that multiple dwellings relief, a staple of older advice, was abolished in June 2024 and any plan still relying on it is out of date. The surcharge is best understood as a cost of the company structure, priced against the structure's recurring tax benefits, rather than a problem to engineer away.
Directly, in two ways. First, cash: stamp duty cannot be borrowed within the mortgage, so the company's funding requirement is deposit plus duty plus costs. On that £250,000 purchase at 75% LTV, the company needs £62,500 of deposit and £15,000 of SDLT, £77,500 or more of documented funds, usually entering as a director's loan. Underwriters check that the company can cover the duty; a case funded to the deposit but not the tax is a case that falls over at exchange, a pattern that features in our guide to why limited company applications get declined.
Second, the economics: the surcharge raises total money-in, which lowers the true net yield and lengthens the payback on the company structure. We include the full duty in every cash model we build, alongside the limited company buy-to-let mortgage pricing itself, because a deal appraised without it is a deal appraised wrongly. If you are weighing locations, duty differences matter too: the Scottish 8% supplement changes the arithmetic on otherwise comparable yields, something we flag when clients compare opportunities across the UK.
In England and Northern Ireland, a limited company pays the standard SDLT bands plus a 5% surcharge on the whole price. On a £250,000 buy-to-let that means £2,500 of standard-band tax plus £12,500 of surcharge: £15,000 in total. In Scotland, LBTT applies plus the 8% Additional Dwelling Supplement on the full price; Wales has its own higher-rate LTT schedule. Run your exact figure through our stamp duty calculator before you budget the purchase.
Yes, always, and at the higher rates. Companies pay the additional-dwelling surcharge on every residential purchase, including the company's very first property: the exemption an individual gets on their first or only home never applies to a company. The company cannot claim first-time buyer relief either, regardless of the directors' personal circumstances.
By changing the tax that applies rather than evading it: inside a limited company, rental profit is charged to corporation tax at 19 to 25% with mortgage interest fully deductible, instead of income tax at your 40% or 45% marginal rate under Section 24. The trade-off is the stamp duty surcharge on purchases, dividend tax on extraction and company running costs, so the structure pays off over a holding period, not on day one. Model it with your accountant before incorporating.
Above £500,000, a company buying a dwelling is potentially within the flat higher corporate SDLT rate, 17% since late 2024, unless a relief applies. Genuine property rental businesses can claim relief and pay the normal company rates (standard bands plus the 5% surcharge) instead, which is what virtually every buy-to-let SPV does. The related Annual Tax on Enveloped Dwellings also starts above £500,000, again with relief for properties genuinely let commercially, claimed through an annual return.
Rates and bands stated are those in force in June 2026 and do change at fiscal events. This is general guidance, not tax advice: confirm your own liability with your accountant or conveyancer before exchanging.
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