Companies and SPVs SDLT 2026

Companies buying residential property above £500,000 pay a flat 15% under Schedule 4A FA 2003 unless a relief applies. Below £500k they pay standard rates with the 5% additional-dwellings surcharge. ATED on top, annually.

The 15% flat rate under Schedule 4A FA 2003

Under Schedule 4A of the Finance Act 2003, a non-natural person buying a residential dwelling for more than £500,000 pays SDLT at a flat 15% on the entire purchase price, instead of the standard banded rates plus additional-dwellings surcharge that natural-person buyers face. Non-natural persons for this purpose include companies (UK or non-UK), partnerships with corporate partners, and collective investment schemes. The 15% rate was introduced by Finance Act 2012 as part of a package targeting corporate enveloping of high-value residential property.

The £500,000 threshold is binary: a corporate purchase at £499,999 escapes the 15% rate entirely (and pays standard residential SDLT plus 5% surcharge), while a £500,001 purchase pays £75,000.15 at the 15% flat rate. The cliff edge effect is sharp: one extra pound of purchase price increases SDLT by roughly £45,000 at the boundary (from approximately £30,000 standard+surcharge to £75,000 flat). For corporate buyers near the threshold, structuring the purchase to remain below £500,000 (where commercially possible) is a meaningful tax-planning consideration.

The 15% rate applies only to residential dwellings. Corporate purchases of non-residential or mixed-use property pay standard non-residential SDLT (0/2/5%) with no equivalent corporate flat-rate penalty. Corporate purchases of land for development can therefore be structured around the residential definition; HMRC will look at the use at the time of completion, not at the future development intent.

Corporate SDLT vs natural-person SDLT by price point

At very high values (above ~£5m) the corporate flat 15% rate is actually cheaper than the natural-person + 5% surcharge route. This is one reason that some ultra-high-net-worth purchases are still made through corporate vehicles despite the headline 15% rate, especially where the buyer would otherwise face the 5% additional-dwellings + 2% non-resident stack.

The Schedule 4A reliefs in detail

Part 2 of Schedule 4A FA 2003 provides reliefs that reduce the 15% flat rate back to the standard banded rate (plus the 5% additional-dwellings surcharge, which always applies to corporate buyers of residential dwellings). The available reliefs:

(1) Property-rental business. The property must be acquired for the purposes of a property-rental business carried on by the company. Rents must be commercial and at market rates. Letting must be continuous, not intermittent. Letting to connected persons (directors' families, controlling shareholders) is generally not qualifying. (2) Property-development trade. The property is acquired for redevelopment as part of a property-development trade. Development must commence within a reasonable period after acquisition. The relief is clawed back if the dwelling is occupied by a connected person within 3 years.

(3) Employee accommodation. The dwelling is acquired to be made available as accommodation for qualifying employees who are not directors, their families, or connected persons. The accommodation must be made available rent-free or for a token rent. (4) Qualifying charity. Acquisition by a registered charity for charitable purposes. (5) Farm-house relief. Working farm with a working farmer occupying the farmhouse as part of the farm business. (6) Trades involving making the dwelling available for the public. Limited categories including some bed-and-breakfast and historic-house arrangements.

Clawback rules and 3-year monitoring

Each Schedule 4A relief has a 3-year clawback period under paragraph 5G. If the qualifying use ceases within 3 years of the effective date of the acquisition (e.g. a buy-to-let company stops letting the property and a director moves in, or a development company holds the property without developing for more than 3 years), the relief is withdrawn and SDLT becomes payable at the 15% flat rate on the original acquisition. The company must file a further return within 30 days of the ceasing of qualifying use, paying the clawed-back SDLT with interest from the original effective date.

The clawback is symmetric: if the qualifying use is reinstated within 3 years (e.g. the property is re-let after a temporary period of personal use by a director), the relief can be re-claimed. In practice the clawback is a powerful enforcement tool for HMRC and a real risk for buyers who structure for relief without long-term certainty about commercial use.

HMRC routinely audits Schedule 4A relief claims, requesting evidence of commercial activity (tenancy agreements, rent receipts, development planning, employee accommodation arrangements). The standard practice for corporate buyers is to retain comprehensive evidence of the qualifying use for at least 6 years from the effective date.

Annual Tax on Enveloped Dwellings (ATED)

Annual Tax on Enveloped Dwellings is an annual tax on companies owning UK residential dwellings worth more than £500,000. Introduced by Finance Act 2013, ATED captures the ongoing cost of holding residential property in a corporate envelope. The 2025-26 ATED rates by property value band: £500k-£1m: £4,400 per year. £1m-£2m: £15,400. £2m-£5m: £28,650. £5m-£10m: £61,050. £10m-£20m: £122,250. Over £20m: £292,350.

ATED reliefs mirror the Schedule 4A SDLT reliefs: property-rental business, property-development trade, employee accommodation, qualifying charity, farm-house, and a few others. Reliefs must be claimed annually via the ATED return (Form ATED), and the qualifying use must be ongoing at the relevant ATED chargeable period. Most genuine commercial holding structures qualify for an ATED relief that matches the Schedule 4A SDLT relief, so the ongoing ATED cost is zero while the qualifying use continues.

The combination of 15% SDLT on acquisition and substantial annual ATED charges is deliberately punitive, designed to deter the use of corporate envelopes for personal-use residential property. The economic effect is that most owner-occupiers find it cheaper to own residential property personally; corporate holding makes sense almost exclusively for genuine investment, rental, or development businesses where the Schedule 4A and ATED reliefs apply.

BTL through a limited company: SDLT economics

The buy-to-let market has shifted substantially toward limited-company holding since the Section 24 mortgage-interest restriction phased in from 2017 to 2020 (full phase-out completed April 2020). The corporate route allows full deduction of mortgage interest against rental income for corporation-tax purposes (currently 19% for small companies, 25% for larger), whereas individual landlords get only a 20% basic-rate credit on mortgage interest under section 24 of the Finance Act (No 2) 2015.

For SDLT purposes, a limited-company BTL purchase qualifies for the Schedule 4A property-rental business relief, taking the 15% flat rate down to standard banded SDLT plus the 5% additional-dwellings surcharge. A £250,000 limited-company BTL purchase therefore pays £15,000 in SDLT (the same as an individual additional-dwelling buyer). Above £500k the relief continues to apply, so a £600,000 limited-company BTL pays £50,000 (standard + 5% surcharge) instead of £90,000 (15% flat).

The corporate BTL economics are: similar SDLT to individual buy-to-let (with the surcharge), better treatment of mortgage interest, dividend tax on extracted rental profits, no main-residence-relief on eventual sale (CGT), corporate ATED if value exceeds £500k unless property-rental business relief applies. The trade-off varies by property value and the landlord's personal tax situation. Most new BTL acquisitions in 2024-2026 are made through limited companies for higher-rate taxpayers.

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