Commercial Stamp Duty Calculator

Use our free Commercial Stamp Duty Calculator to estimate the tax payable on UK commercial property purchases. Get accurate figures and plan your investment with confidence.

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Purchase Price (£)

E.g., 300000

Lease Premium (£)

E.g., 50000

NPV of Rent (£)

E.g., 100000

Property Type

Select type

Mixed-Use (% Residential)

E.g., 20 for 20% residential

Total SDLT

£4,500

Effective Rate

1.50%

Chargeable Amount

£300,000

Net Cost

£295,500

Freehold commercial property £300,000: SDLT £4,500 at effective 1.50% rate (0% on first £150k, 2% on £150k–£250k, 5% above).

Band	Rate	Amount in Band	Tax Due
£0 – £150,000	0%	£150,000	£0
£150,001 – £250,000	2%	£100,000	£2,000
Over £250,000	5%	£50,000	£2,500
Total		£300,000	£4,500

Commercial SDLT Rates (England & NI, 2025/26): 0% on first £150,000, 2% on £150,001–£250,000, 5% above £250,000. For leases: tax on premium + NPV of rent. Mixed-use properties use weighted average of commercial and residential rates. Estimates only — consult HMRC or a solicitor.

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Commercial Stamp Duty Calculator

Buying or leasing commercial property? A commercial stamp duty calculator is your key tool for budgeting the tax you’ll owe on transactions like office spaces, retail units, or warehouses. In 2025, stamp duty—known as Stamp Duty Land Tax (SDLT) in the UK, transfer duty in Australia, or similar levies elsewhere—varies by region, with rates from 0% on low-value deals to 7.5% flat in Ireland or tiered 0-5% in England for non-residential buys. Whether you’re using a commercial stamp duty calculator UK for SDLT on a £500,000 lease or an Australia version for transfer duty on a $1M warehouse, these calculators factor in premiums, net present value (NPV) for leases, and exemptions. This guide on Gcalculate.com covers how it works, regional rates, and tips—helping investors and businesses plan without surprises.

How Does a Commercial Stamp Duty Calculator Work?

A commercial stamp duty calculator computes tax based on property value, type (freehold/leasehold), and location-specific rules. For freeholds, it’s a percentage of the purchase price; for leases, it combines premium (upfront payment) and NPV (discounted future rents). Tools exclude residential elements in mixed-use properties and apply surcharges for non-residents.

Basic formula for freehold: Stamp Duty = Value × Rate (tiered or flat).

Steps:

Input purchase price or premium (e.g., £300,000).
Add lease details: Annual rent, term (e.g., £20,000/year over 10 years = £150,000 NPV).
Select region (UK, Australia, etc.) for rates.
Output: Total duty, breakdown by band, and payable amount.

Pro tip: For leases, NPV discounts rents (e.g., 3.5% rate for first 5 years)—calculators automate this per HMRC formulas.

Commercial Stamp Duty Rates in 2025 by Region

Rates differ significantly—UK’s tiered system favors lower values, while Australia’s state-based transfer duty scales progressively. No federal stamp duty in Canada or US; it’s provincial/state transfer taxes (0.5-2%).

Region	Rate Structure	Thresholds/Exemptions	Example: £/$500,000 Freehold
UK (England/NI SDLT)	Tiered 0-5%	£0 on first £150k; 2% £150k-£250k; 5% over £250k	£15,000 (3%)
UK Scotland (LBTT)	Tiered 0-5%	£0 on first £150k; 1% £150k-£250k; 5% over	£14,500 (2.9%)
UK Wales (LTT)	Tiered 0-5%	£0 on first £225k; 1% £225k-£250k; 5% over	£13,750 (2.75%)
Australia (NSW Transfer Duty)	Tiered 1.6-5.5%	$0 on first $14k; scales up; foreign buyer surcharge 8%	$22,990 (4.6%) + surcharge
Ireland	Flat 7.5%	No threshold; VAT-inclusive for new builds	€37,500 (7.5%)
Canada (Ontario Land Transfer Tax)	Tiered 0.5-2.5%	Provincial + municipal; exemptions for charities	CAD 6,475 (1.3%)
US (e.g., California Transfer Tax)	Flat 0.1-1.1%	County-based; no federal; exemptions for transfers	$550 (0.11%)

For commercial stamp duty calculator Canada, it’s land transfer tax (LTT)—e.g., Ontario’s 0.5% on first $55k, up to 2.5% over $400k. US varies by state (e.g., NY 0.4-0.65%).

Commercial Stamp Duty Calculator Examples

Assuming freehold purchases in 2025:

Property Value	UK SDLT (England)	Australia (VIC)	Ireland	Canada (BC)
£/$150,000	£0	$1,870 (1.4%)	€11,250 (7.5%)	CAD 1,000 (0.67%)
£/$500,000	£15,000 (3%)	$21,430 (4.3%)	€37,500 (7.5%)	CAD 3,750 (0.75%)
£/$1M	£42,500 (4.25%)	$55,430 (5.5%)	€75,000 (7.5%)	CAD 8,000 (0.8%)

For leases: UK £200k premium + £20k/year NPV over 10 years (~£150k) = £12,500 total SDLT.

Buying commercial property in the UK? Use our Commercial Stamp Duty Calculator to quickly estimate the Stamp Duty Land Tax (SDLT) on your purchase. This smart and updated calculator makes it simple to understand how much tax you’ll owe based on your property’s price, location, and type.

Just enter the property value, and the calculator will provide an instant breakdown of your SDLT liability. It takes into account current UK stamp duty rates for non-residential and mixed-use properties, ensuring your results are precise and up to date.

Whether you’re an investor, business owner, or commercial buyer, knowing your stamp duty costs upfront helps you budget more effectively and avoid surprises during the transaction process. Our tool also helps compare potential tax savings under different ownership structures or buying thresholds.

With the Commercial Stamp Duty Calculator, you can plan your property purchase confidently, manage costs efficiently, and make informed financial decisions before completing your deal.

Try it now to calculate your stamp duty quickly and accurately for any UK commercial property.

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