The 17% Stamp Duty Rate Explained
Originally introduced at 15%, now raised to 17%: the corporate SDLT surcharge on residential property over £500,000. Who pays it, who is exempt, and how it stacks with other surcharges.
Key Takeaways
- The rate was originally 15% when introduced in 2012. It increased to 17% in October 2024. The page title reflects the original name still widely searched, but all current calculations use 17%.
- The 17% rate applies to "non-natural persons" (companies, partnerships with corporate members, collective investment schemes) buying residential property over £500,000.
- It is a single flat rate on the entire purchase price, not the marginal portion over £500,000. £500,001 purchase = £85,000 SDLT. £500,000 purchase = standard tiered rates.
- Settlement trustees are explicitly exempt. Companies with qualifying uses (rental, development, public access) can claim relief and revert to standard rates.
- The 2% non-resident surcharge stacks on top, creating a maximum combined rate of 19% for non-resident companies buying without relief.
What clients say
17%
Current rate (from Oct 2024)
15%
Previous rate (2012-2024)
£500k
Threshold (residential)
19%
Max with NR surcharge
From 15% to 17%: The Rate History
The higher rate for non-natural persons was introduced in April 2012 as part of measures to discourage the use of corporate "enveloping" to avoid stamp duty. When first introduced, it was set at 15%.
At the Autumn Budget on 30 October 2024 the rate was increased to 17%. The 17% rate applies where the effective date of the transaction, that is completion or substantial performance if that comes first, falls on or after 31 October 2024. A transitional rule preserves the old 15% rate where contracts were exchanged on or before 30 October 2024, provided the contract is not varied, the rights under it are not assigned, and no option or right of pre-emption is exercised after that date.
| Period | Rate | SDLT on £1m |
|---|---|---|
| April 2012 to October 2024 | 15% | £150,000 |
| October 2024 onwards | 17% | £170,000 |
The £20,000 increase on a £1 million property makes the rate change one of the largest single SDLT increases for any buyer category in recent years.
Who the 17% Rate Applies To
The 17% rate applies to "non-natural persons", a legal term covering entities that are not individual human beings. Under HMRC corporate bodies guidance, this includes:
Limited companies
All UK and non-UK companies purchasing qualifying residential property
Partnerships with corporate members
Partnerships where at least one partner is a company are treated as non-natural persons
Collective investment schemes
Funds, REITs (in some circumstances), and other collective vehicles
Individual buyers, including very wealthy individuals, celebrities, and family offices operating through personal names, are natural persons. No individual, regardless of wealth or number of properties, pays the 17% rate.
The £500,000 Threshold: Critical Mechanics
The 17% rate applies when a non-natural person purchases a residential property for more than £500,000. The mechanics are different from how most SDLT bands work:
- At £500,000: standard residential rates plus the 5% surcharge (total £40,000)
- At £500,001: 17% flat rate on the entire £500,001 = £85,000
- This creates a "cliff edge" of approximately £45,000 at the threshold
The £500,000 Cliff Edge
A company buying at exactly £500,000 pays £40,000 in SDLT. At £500,001, the bill jumps to approximately £85,000, an increase of about £45,000 for a £1 difference in price. This makes the threshold one of the most significant negotiation points in corporate property transactions.
Companies should consider whether it is possible to structure transactions to keep the purchase price at or below £500,000, or whether a qualifying relief can be obtained for transactions above this threshold.
Rate Comparison: Company vs Individual
| Price | Individual (additional property) | Company (no relief) | Extra Cost |
|---|---|---|---|
| £250,000 | £15,000 | £15,000 | £0 |
| £500,000 | £40,000 | £40,000 | £0 |
| £600,000 | £50,000 | £102,000 | +£52,000 |
| £1,000,000 | £93,750 | £170,000 | +£76,250 |
| £2,000,000 | £253,750 | £340,000 | +£86,250 |
Who Is Exempt from the 17% Rate
Several categories are explicitly exempt or can obtain relief:
Settlement trustees
Explicitly excluded from the non-natural person definition for the 17% rate
Property rental businesses
Companies carrying on genuine letting businesses can claim relief; revert to standard rates
Developers / traders
Companies buying for development and resale with commercial plans
Other qualifying relief categories
Public access trades, financial institutions, employee occupation, farmhouses, housing co-operatives
How the Surcharges Stack
For non-natural persons, multiple SDLT elements can stack. Here is the complete picture for a UK-resident company vs a non-resident company, both buying a £1 million residential property:
| Rate Element | UK Company | Non-Resident Company |
|---|---|---|
| 17% flat rate (>£500k) | ✓ 17% | ✓ 17% |
| 2% non-resident surcharge | ✗ Not applicable | ✓ +2% |
| Total rate | 17% | 19% |
| SDLT on £1m | £170,000 | £190,000 |
Note: when a qualifying relief applies, the 17% flat rate is replaced by standard tiered rates plus the 5% additional dwelling surcharge. The non-resident surcharge may still apply separately.
Buying through a company? Structure it before you commit
Pre-purchase structuring can legitimately reduce stamp duty on company and portfolio buys.
Individual vs Company: The Full SDLT Comparison
The critical distinction in SDLT treatment between individuals and companies is that:
- Individuals: pay tiered rates on each portion of the purchase price, plus the 5% surcharge if purchasing an additional property. Tiered rates cap at 12% on the portion above £1.5m.
- Companies: pay 17% on the entire purchase price if it exceeds £500,000. There are no tiered bands. Below £500,000, companies pay tiered rates plus the 5% surcharge.
For property below £500,000, there is no difference between company and individual SDLT when both are purchasing an additional dwelling. The gap only opens above the £500,000 threshold.
Worked Examples
Example 1: Company buying £750,000 house (no relief)
| Calculation | Amount |
|---|---|
| Purchase price | £750,000 |
| Rate (17% flat, entire price) | 17% |
| Total SDLT | £127,500 |
Example 2: Same property, individual buyer (additional dwelling)
| Band | Amount | Rate | SDLT |
|---|---|---|---|
| £0 to £125,000 | £125,000 | 5% | £6,250 |
| £125,001 to £250,000 | £125,000 | 7% | £8,750 |
| £250,001 to £750,000 | £500,000 | 10% | £50,000 |
| Total SDLT (individual, additional dwelling) | £65,000 | ||
| Company premium (no relief) | +£62,500 | ||
Reliefs That Remove the 17% Rate
When a qualifying relief applies, the 17% flat rate is replaced by standard residential SDLT rates (the tiered bands) plus, in most cases, the 5% additional dwelling surcharge. See the detailed breakdown in our property developer exemptions guide.
The most commonly claimed relief is property rental business relief, which applies to companies and SPVs genuinely carrying on a letting business. For companies buying over £500,000 for a letting portfolio, this relief can save £50,000 to £100,000 or more on a single transaction.
For a full corporate comparison with personal ownership, use our company vs personal comparison page and the calculator. For SPV-specific considerations, see our SPV guide.
How to Claim Relief from the 17% Rate
Relief from the 17% rate is not automatic. It must be actively claimed on the SDLT return. The relevant form is SDLT1 (the main land transaction return), which must be submitted to HMRC within 14 days of completion. In practice, the company's solicitor or conveyancer handles this claim on behalf of the buyer as part of the standard post-completion process.
Documentation Required
The nature of the supporting documentation depends on the relief category claimed. For property rental business relief, the most commonly claimed, relevant evidence includes a business plan or statement of intent to let the property commercially, existing tenancy agreements if the company already has a rental portfolio, and minutes or board resolutions recording the commercial purpose of the acquisition. For developer/trader relief, documentation of the development timeline, planning permission status, and commercial resale plans will be required. For employee occupation relief, employment contracts confirming the relevant employee's role are needed.
HMRC Enquiry Risk
HMRC can open an enquiry into a relief claim within 9 months of the filing date of the SDLT return. Where a return is filed late, the 9-month window runs from when it is actually filed. In cases of negligent or fraudulent claims, HMRC has extended powers to go back further, up to 20 years in the most serious cases.
If Relief Is Denied
If HMRC successfully challenges the relief claim, the full 17% rate applies retrospectively from the completion date. The company will owe the additional SDLT plus statutory interest from the original due date. Where the claim was made carelessly, a penalty of up to 30% of the unpaid tax may also apply; deliberate errors can attract penalties of up to 100%.
The practical consequence is that all evidence supporting the relief claim, including business plans, board minutes, tenancy agreements, and correspondence, should be retained for at least 6 years after filing (the standard HMRC record retention period), or longer where there is any uncertainty about the claim's strength. Specialist tax advice before filing is strongly recommended for any claim involving the 17% rate.
Sources
Frequently Asked Questions About the 17% Corporate SDLT Rate
What is the corporate stamp duty rate and when did it increase?
Originally 15% from 2012, it increased to 17% in October 2024 as part of the Autumn Budget. It applies as a flat rate on the entire purchase price (not the marginal portion) for non-natural persons buying residential property over £500,000.
Who does the 17% stamp duty rate apply to?
Non-natural persons: companies, partnerships with at least one corporate partner, and collective investment schemes. Individual buyers, regardless of wealth, are natural persons and never pay this rate.
Are there exemptions from the 17% corporate stamp duty rate?
Yes. Settlement trustees are explicitly exempt. Companies can claim relief through seven qualifying categories including property rental business, developer/trader, and public access trades.
Can the 17% rate and the 2% non-resident surcharge both apply?
Yes. If a company is controlled by non-UK residents, the 2% non-resident surcharge stacks, creating a 19% combined rate, the highest SDLT rate currently applicable to any transaction.
What is the difference between how individuals and companies pay stamp duty on expensive properties?
Individuals pay tiered rates (2%, 5%, 10%, 12%) on each portion, capped at 12% above £1.5m, plus the 5% additional dwelling surcharge if applicable. Companies pay 17% on the entire price if it exceeds £500,000. No tiered bands apply. On a £1 million purchase an individual pays £43,750 at standard rates (plus £50,000 of surcharge where it applies, giving £93,750), while a company with no relief pays £170,000 flat.
Reviewed by
Julie White
ACASDLT Expert since 1999Stamp Duty Land Tax Specialist
ACA and Tax Adviser with a career spanning nearly four decades, specialising in SDLT planning and advisory work since 1999.