Commercial Stamp Duty Calculator UK
Estimate commercial stamp duty before you commit
Buying or leasing a business property can feel expensive before you even reach completion, so this calculator helps you estimate your commercial stamp duty in seconds. Whether you are purchasing a freehold shop in England, negotiating a new commercial lease in Scotland, or taking over a warehouse in Wales, you can quickly see a breakdown of the tax due.
This tool estimates Stamp Duty Land Tax (SDLT) for England and Northern Ireland, Land and Buildings Transaction Tax (LBTT) for Scotland, and Land Transaction Tax (LTT) for Wales. It applies to non-residential and mixed-use property transactions.
How to use this commercial stamp duty calculator
Follow these 3 short steps to estimate your property tax:
- Choose the property location: Select England, Northern Ireland, Scotland, or Wales to ensure the correct tax bands are applied.
- Select the transaction type: Choose whether you are making a freehold purchase, taking an assigned lease, paying a lease premium, or signing a new lease with rent.
- Enter your details: Input the purchase price, premium, or annual rent to instantly see your estimated tax breakdown.
What the calculator shows
Once you enter your details, the calculator instantly updates to show your total estimated tax. It also provides an effective tax rate (the percentage of your property cost paid in tax) and your total cost including tax. If you are entering a new lease, it displays the Net Present Value (NPV) calculation and separates the tax calculated on the premium from the tax calculated on the rent.
Commercial stamp duty rates and thresholds
England and NI SDLT
For non-residential and mixed-use purchases or premiums:
- Up to £150,0000%
- £150,001 to £250,0002%
- Above £250,0005%
Scotland LBTT
For non-residential and mixed-use purchases or premiums:
- Up to £150,0000%
- £150,001 to £250,0001%
- Above £250,0005%
Wales LTT
For non-residential and mixed-use purchases or premiums:
- Up to £225,0000%
- £225,001 to £250,0001%
- £250,001 to £1m5%
- Above £1,000,0006%
New lease NPV rent rates
If you take a new commercial lease, tax is also calculated on the Net Present Value (NPV) of the total rent over the lease term. The 0% threshold for rent NPV is £150,000 in England, Northern Ireland, and Scotland, and £225,000 in Wales.
What counts as commercial or non-residential property?
Non-residential property generally includes any property that isn't used as a dwelling. Common examples include:
- Offices and retail units
- Shops and warehouses
- Factories and industrial units
- Agricultural land and working forests
- Hotels and inns
- Mixed-use property (properties with both residential and commercial elements, like a flat above a shop)
- Six or more dwellings bought in a single transaction (often treated as non-residential for SDLT)
Freehold, lease premium, assigned lease, and new lease
A freehold purchase means you are buying the property outright. A lease premium is an upfront lump sum paid to landlords to secure a lease. An assigned lease occurs when you take over an existing lease from a previous tenant, where you might pay them a consideration value. A new lease involves agreeing fresh terms with a landlord, usually involving ongoing annual rent and sometimes a premium.
Important notes before you rely on the result
This calculator is a helpful tool, but it is an estimate. Rates and bandings can change. Your final stamp duty calculation can be affected by factors like VAT included in the price or rent, linked transactions (buying multiple properties from the same seller), specific land reliefs (like Freeport or Investment Zone relief), unusual lease terms, and complex mixed-use classifications.
Always verify the exact amount due and your specific filing deadline—usually within 14 days of the completion date for SDLT—with a qualified solicitor, conveyancer, or tax adviser before completing your commercial property buyer journey.
Frequently asked questions
Commercial stamp duty is a property transaction tax charged when you buy or take a new lease on non-residential land or property in the UK above a certain threshold. The name of the tax depends on the region: SDLT in England and Northern Ireland, LBTT in Scotland, and LTT in Wales.
No, you do not pay Stamp Duty Land Tax (SDLT) in Scotland or Wales. Instead, you pay Land and Buildings Transaction Tax (LBTT) to Revenue Scotland, or Land Transaction Tax (LTT) to the Welsh Revenue Authority.
SDLT is calculated using a slice system, where you pay different tax rates on the portion of the purchase price that falls within each tax band, rather than paying a single flat effective tax rate on the whole amount.
Yes, you may have to pay tax on a commercial lease. It is calculated on any lease premium paid upfront, as well as on the Net Present Value (NPV) of the annual rent over the duration of the lease term.
The Net Present Value (NPV) of rent is a formula used by tax authorities to evaluate the total value of rent payable over the life of a lease, adjusted for inflation and time value using a set discount rate (normally 3.5%).
Normally, mixed-use property (incorporating both residential and non-residential elements) is treated as non-residential for stamp duty purposes, allowing buyers to use the commercial rate bands. However, strict rules apply, and it is vital to consult a tax adviser.
If your transaction is in England or Northern Ireland, you normally have 14 days from the completion date or effective date of the transaction to file an SDLT return and pay the tax due to HMRC. Different deadlines may apply in Scotland and Wales.
No, this commercial stamp duty calculator provides an estimate only and does not constitute legal, accounting, or tax advice. You should always use a professional conveyancer or tax adviser to confirm your chargeable consideration and final tax bill.