When Does The 15% SDLT Company Rate Apply?
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When does the 15% SDLT rate apply to a company buying a residential property, and when can relief be claimed?
Introduction
Readers often search for this issue after receiving an HMRC enquiry about Stamp Duty Land Tax (SDLT) on a company purchase of a dwelling. The concern is usually whether the special 15% SDLT rate applies, or whether the company can rely on one of the reliefs for genuine commercial use.
This question commonly turns on what happened after completion: who occupied the property, whether it was genuinely let or marketed for letting, whether it formed part of a property business, and whether there is evidence that it was not being held for personal use.
The Question
A company bought a residential property and filed an SDLT return on the basis that relief from the 15% flat rate was available. HMRC has opened an enquiry and appears to be checking whether the relief conditions were actually met.
The key factual questions are:
- Whether anyone lived in the property after the company bought it.
- If so, who occupied it and on what basis.
- Whether the property was ever marketed for letting or used in a rental business.
- Whether it was used in a property development or trading business.
- If it remained empty, whether it was continuously vacant and whether there is evidence of a genuine commercial intention rather than personal use.
Nick’s Explanation
Nick’s explanation was that HMRC’s enquiry was focused on the 15% flat rate of SDLT that can apply where a company acquires a residential property. He noted that the relevant rules are in Finance Act 2003, Schedule 4A, and that the legislation also contains reliefs where the property is used for a genuine commercial purpose, such as:
- a property rental business,
- a property trading business, or
- a property development business.
He also explained that, from HMRC’s letter, the SDLT return appeared to include an implied claim to one of these reliefs, and HMRC was now checking whether the statutory conditions were met.
The practical point in Nick’s reasoning is that the answer depends heavily on evidence of actual use. In anonymised form, his position was essentially this: to assess whether the relief is valid, it is necessary to understand the property’s occupation and use since acquisition, including whether anyone lived there, whether it was genuinely held for letting, and whether it was connected with a qualifying business activity.
The Law
The 15% SDLT flat rate is contained in Finance Act 2003, Schedule 4A. Broadly, it applies where a company acquires a major interest in a single dwelling for more than the relevant threshold and no relief applies.
Schedule 4A also provides reliefs in certain cases. The main ones commonly considered are:
- property rental business relief,
- property developer relief, and
- property trader relief.
These reliefs are not automatic simply because a company says it intended a commercial use. The statutory conditions must be satisfied. In broad terms, the dwelling must be acquired and held for the purposes of the qualifying business, and the facts must not show that it was instead available for, or used for, personal occupation by connected individuals or other non-qualifying use.
HMRC is entitled to enquire into the return and ask for evidence showing that the relief conditions were met at the effective date of the transaction and, where relevant, continued to be met.
If a taxpayer argues that the building was not suitable for use as a dwelling, that is a different issue from Schedule 4A relief. In that type of case, the current threshold is relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A property will not fall outside the dwelling rules merely because it needs work, is vacant, or is in poor condition. The condition must be serious enough to meet the now stricter approach confirmed by the Court of Appeal.
Analysis
The right way to analyse this is step by step.
First, identify whether the company acquired a chargeable interest in a dwelling so that Schedule 4A is potentially in point.
Second, if the purchaser was a company and the transaction falls within the value threshold, ask whether a Schedule 4A relief was claimed or should have been available.
Third, test the facts against the specific relief relied on. This is where HMRC usually focuses.
For property rental business relief, the central question is whether the property was genuinely part of a rental business. Evidence may include:
- advertising or marketing for tenants,
- instructions to letting agents,
- tenancy agreements,
- rental accounts, and
- records showing the property was held to generate rental income rather than private occupation.
If the property was instead occupied by the owner, relatives, or other connected persons, that will usually create serious difficulty for the relief.
For property development or trading relief, the company must be able to show that the acquisition formed part of a genuine development or trading activity. Evidence may include:
- company accounts and business records,
- development plans,
- planning documents,
- building contracts,
- sales or resale activity, and
- board minutes or other contemporaneous documents showing the commercial purpose.
If the property was simply bought and left empty, that does not by itself prove a qualifying relief. Vacancy can be consistent with a qualifying purpose, but HMRC will usually expect evidence showing why it was empty and how that vacancy fitted into the company’s business model. For example, a property may be empty while being prepared for letting, redevelopment, or resale. Even then, intention alone is usually not enough; HMRC will want objective evidence.
That is why Nick’s questions about occupation, letting, development use, and continuous vacancy are so important. They are the factual indicators that determine whether the statutory relief can stand.
It is also important not to confuse two separate arguments:
- an argument that Schedule 4A relief applies because the company used the property for a qualifying business purpose, and
- an argument that the building was not suitable for use as a dwelling at all.
Those are legally distinct routes. If the second route is being considered, the condition threshold is now relatively high after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A building will not escape treatment as a dwelling merely because it was in disrepair or required works.
Outcome
The practical conclusion is that an HMRC enquiry of this kind will usually succeed or fail on evidence of actual use and genuine commercial purpose.
If the property was occupied privately, or there is little evidence of a real rental, development, or trading business, the claimed relief may be difficult to defend and the 15% rate may apply.
If, however, the company can show with contemporaneous records that the property was acquired and used as part of a qualifying business activity, there may be a sound basis to uphold the relief and respond robustly to HMRC.
Practical Steps
A reader in this position should gather the facts and documents in a structured way. In particular:
- Confirm whether anyone has occupied the property since purchase.
- Identify who occupied it, for what period, and on what legal or practical basis.
- Collect evidence of marketing for letting, such as agent instructions, listings, and correspondence.
- Collect tenancy documents and rental records if the property was let.
- Collect business records showing any development or trading purpose.
- If the property was vacant, prepare evidence explaining why, for how long, and how that vacancy supported the business purpose.
- Review the SDLT return to identify exactly which relief was claimed or treated as claimed.
- Check whether any private occupation by connected persons could prevent the relief from applying.
If there is also a possible argument that the building was not suitable for use as a dwelling, that should be assessed carefully and separately, bearing in mind the stricter standard confirmed in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
Conclusion
Where a company buys a residential property, the 15% SDLT rate is the starting point unless a Schedule 4A relief applies. The decisive issue is usually not what the company says it intended, but what the evidence shows about occupation, letting, vacancy, and business use. A careful factual review is essential before responding to HMRC.
Legal References Used
- Finance Act 2003, Schedule 4A
- Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799
This page was last updated on 22 March 2026.
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