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Introduction

Stamp Duty Land Tax (SDLT) is a transaction tax payable on most commercial property purchases in England and Wales. Buyers should understand how SDLT applies to their specific transaction, as liability can vary depending on price, structure and tenure

How Commercial SDLT Works

Commercial SDLT is calculated on a tiered basis, with different rates applying to portions of the purchase price rather than a single flat rate.

This system applies to:

  • Freehold purchases
  • Lease premiums
  • Certain lease assignments

Unlike residential property, there are no additional SDLT surcharges for companies or overseas buyers when purchasing commercial property

SDLT on Leasehold Transactions

SDLT on leasehold commercial property can involve two components:

  1. SDLT on any lease premium (if paid)
  2. SDLT on the Net Present Value (NPV) of rent

The NPV calculation considers:

  • Annual rent
  • Lease length
  • Rent review structure

This can make SDLT on leases more complex than freehold purchases, particularly for longer or higher-value leases.

Mixed-Use Property

Mixed-use property (for example, a building with both commercial and residential elements) may be treated differently for SDLT purposes.

In some cases:

  • Commercial SDLT rates may apply to the entire transaction
  • Residential surcharges may not apply

Mixed-use treatment is fact-specific and should always be confirmed with professional advice before exchange.

When SDLT Is Payable

SDLT must usually be:

  • Calculated
  • Declared
  • Paid

Within a set period following completion.

Late submission can result in penalties and interest.

Reliefs and Special Circumstances

Certain SDLT reliefs may be available, depending on the nature of the transaction.

Examples include:

  • Property reconstruction relief
  • Multiple dwellings relief (in limited mixed-use cases)
  • Certain intra-group transactions

Reliefs are not automatic and must be claimed correctly.

Budgeting for SDLT

Buyers should treat SDLT as:

  • A non-recoverable transaction cost
  • Payable regardless of future performance
  • Part of the upfront capital requirement

Failing to account for SDLT early can affect funding and completion timelines.

SDLT and Professional Advice

Because SDLT treatment can vary significantly between transactions, buyers are strongly advised to:

  • Confirm liability early
  • Obtain solicitor or tax advice
  • Avoid assumptions based on residential rules

Errors in SDLT calculation can be costly and difficult to rectify

What Comes Next

In addition to SDLT, some buyers may be able to recover tax value through allowances linked to the property itself.

This is covered in the next section:

Reclaiming Capital Allowances on Commercial Property.