Guidance

Check if you can claim enhanced structures and buildings allowance relief in UK Freeport or Investment Zone special tax sites

Find out if you can claim enhanced structures and buildings allowance relief on qualifying expenditure on structures and buildings in a UK Freeport or Investment Zone special tax site.

Where we refer to a ‘Freeport’ on this page, this also applies to ‘Green Freeports in Scotland’ unless otherwise stated.

A special tax site is an area of land where businesses can claim certain tax reliefs. Special tax sites are sometimes known as Freeport tax sites or Investment Zone tax sites. A Freeport tax site is independent and separately authorised from a Freeport customs site, but they can cover the same area of land.

Find out more about:

You can claim enhanced structures and buildings allowance relief when you incur qualifying expenditure on structures and buildings in a special tax site.

The relief can be claimed for expenditure incurred from the date a special tax site is designated until:

• 30 September 2031 for English Freeport special tax sites
• 30 September 2034 for Scottish Green Freeport, Welsh Freeport and Investment Zone special tax sites

You can find out which categories of expenditure are eligible for structures and building allowance. Read the guidance on claiming capital allowances for structures and buildings.

You cannot claim until the relevant Freeport or Investment Zone special tax site has been designated.

Check which sites are:

How to qualify

You must meet the requirements for claiming capital allowances on structures and buildings. You must also:

  • begin construction on the building or structure when it’s in a special tax site (construction begins when you enter into the first contract or begin construction work, whichever is the earliest)
  • bring the building or structure into qualifying use when it’s in a special tax site and on or before:
    • 30 September 2031 for English Freeport special tax sites
    • 30 September 2034 for Scottish Green Freeport, Welsh Freeport and Investment Zone special tax sites
  • incur the qualifying expenditure on the building or structure when it’s in a special tax site and on or before:
    • 30 September 2031 for English Freeport special tax sites,
    • 30 September 2034 for Scottish Green Freeport, Welsh Freeport and Investment Zone special tax sites
  • be registered for either:
    • Corporation Tax
    • Income Tax

How to apportion the relief

You must apportion the relief between the:

This apportionment will take place when either:

  • part of the building or structure is out of the special tax site
  • you bring part of a structure or building into qualifying use after:
    • 30 September 2031 for English Freeport special tax sites
    • 30 September 2034 for Scottish Green Freeport, Welsh Freeport and Investment Zone special tax sites

How much relief you can claim

You can claim 10% of the special tax site qualifying expenditure each year if you meet all the required conditions.

You can make a claim for the relief for 10 years from the allowance period start date.

The allowance period start date is the later of when the:

  • building or structure is first used for a non-residential purpose
  • qualifying expenditure is incurred

Examples of relief you can claim

An example where enhanced structures and buildings allowance relief is claimed for a building within a special tax site

You built a warehouse costing £1.2 million in a special tax site. All contracts for construction were entered into after the date the special tax site was designated.

The warehouse was completed on 22 March 2024 and you started to use it in your logistics business from 1 April 2024. You prepare accounts for each year ending on 31 March.

In the chargeable period to 31 March 2025, you can claim 10% for the year.

10% × £1.2 million = £120,000

Total claim £120,000 for the year ended 31 March 2025.

An example where enhanced structures and buildings allowance relief is claimed for a building partly within and partly outside a special tax site

You built a factory costing £2 million which was 60% in a special tax site and 40% in an area which is not a special tax site. All contracts for construction were entered into after the date the special tax site was designated.

The factory was completed on 13 July 2023 and you started to use it in your manufacturing business from 1 August 2023. You prepare accounts for each year ending on 31 July.

In the chargeable period to 31 July 2024, you can claim 10% a year on 60% of the expenditure and 3% a year on 40% of the expenditure.

60% of £2 million = £1.2 million
40% of £2 million = £800,000
10% of £1.2 million = £120,000
Plus 3% of £800,000 = £24,000

Total claim £144,000 for the year ended 31 July 2024.

How to claim relief

You must have an allowance statement to claim the relief. It must state:

  • that you want the qualifying expenditure to be special tax site qualifying expenditure
  • the amount of special tax site qualifying expenditure

Read Claiming capital allowances for structures and buildings to find out more about allowance statements and how to claim relief.

Updates to this page

Published 12 November 2021
Last updated 4 July 2024 + show all updates
  1. Added translation

  2. The extension details for English Freeport special tax sites, Scottish Green Freeports Welsh Freeports and Investment Zone special tax sites have been added.

  3. We now use the broad term 'special tax sites' instead of referring specifically to 'Freeport sites'. Links to guidance about Freeport special tax sites and Investment Zone special tax sites have been added.

  4. Welsh translation added.

  5. First published.

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