UK Freeport and Investment Zone Tax Reliefs 2026/27: Complete Guide
Businesses with premises inside a designated Freeport or Investment Zone tax site can access a package of enhanced tax reliefs not available elsewhere — from 100% capital allowances to Employer National Insurance relief. This guide explains each relief, who qualifies, and how to claim them.
Updated 1 July 2026
Key Reliefs
Enhanced capital allowance:100% first-year on qualifying plant
Enhanced structures allowance:10% per year (10-year write-off)
SDLT:Full relief on qualifying land/buildings
Employer NI:Relief for qualifying new employees
What Are Freeports and Investment Zones?
Freeports and Investment Zones are UK government programmes designed to attract business investment and create jobs in specific designated areas. Each Freeport combines customs benefits — such as the ability to defer or, in some cases, avoid import duties on goods brought into the designated customs sites — with a tax site offering direct tax reliefs for businesses that establish or expand operations there. Investment Zones offer a broadly comparable package of tax reliefs, generally without the customs element, targeted at supporting specific high-growth sectors in their designated locations.
Both programmes operate across defined, precisely mapped geographic boundaries rather than entire towns or regions, so eligibility depends on the exact address of a business's premises.
Enhanced Capital Allowances
Businesses can claim a 100% first-year allowance on qualifying new plant and machinery purchased for use primarily within the tax site, allowing the entire cost to be deducted from taxable profits immediately rather than depreciated over several years under the normal capital allowances regime. This sits alongside the standard Annual Investment Allowance, and businesses should compare which route gives the best outcome, particularly where expenditure exceeds the Annual Investment Allowance limit.
Structures and Buildings Allowance
New non-residential structures and buildings constructed or acquired for use within the tax site qualify for an enhanced 10% per year structures and buildings allowance, meaning the full construction or acquisition cost is written off over 10 years. This compares favourably with the standard 3% rate (a 33-year write-off period) that applies to qualifying structures and buildings outside a designated tax site.
Business Rates Relief
New businesses moving into a tax site, or existing businesses expanding within one, can apply to their local billing authority for full business rates relief on qualifying premises for a defined period. Because this relief is discretionary and administered locally, businesses need to apply directly rather than assuming automatic entitlement, and should check the specific relief period and any subsidy control limits that apply to their local authority's scheme.
Employer NI Relief
Employers can claim relief from secondary Class 1 National Insurance on the earnings of qualifying new employees who spend the majority of their working time at a tax site premises, up to an upper earnings threshold, for a set number of years starting from when the employee's employment begins. This is claimed through payroll software using the correct National Insurance category letter designated for Freeport and Investment Zone employees, and requires the employer to keep records demonstrating the employee genuinely works primarily at the qualifying site.
SDLT Relief
Purchases of land and buildings within a tax site for a qualifying commercial purpose can receive full relief from Stamp Duty Land Tax. The relief is subject to a control period after purchase during which the qualifying use condition must continue to be met — for example, the land must be used in a trade or for constructing a new qualifying structure. If the business changes use, sells, or otherwise fails to meet the condition within the control period, some or all of the relief can be clawed back and become payable.
Common Pitfalls
Assuming a town-wide benefit. Only premises within the exact mapped tax site boundary qualify — being nearby is not enough.
Missing the claim process for each relief. None of these reliefs are automatic; each has its own claim route (tax return, payroll, local authority application, or SDLT return).
Not tracking the control period for SDLT relief. Changing the use of relieved land or property within the control period can trigger a clawback of the SDLT that was originally relieved.
Assuming the relief window is indefinite. Each site has its own designation date and time-limited window for claiming enhanced capital allowances and structures allowances — check the specific dates for the site in question.
Frequently Asked Questions
What is a Freeport tax site?
A Freeport is a designated area in England (with equivalent Green Freeport schemes in Scotland and a Freeport in Wales) where businesses located within specific "tax sites" can access a package of enhanced tax reliefs not available elsewhere. The Freeport model combines customs benefits (such as duty deferral on imported goods) with tax reliefs including enhanced capital allowances, business rates relief, an Employer National Insurance relief, and Stamp Duty Land Tax relief for qualifying land and property transactions within the designated tax site boundary.
What is an Investment Zone and how does it differ from a Freeport?
Investment Zones are a separate government programme designed to support high-growth industries in specific areas across the UK, offering a broadly similar package of tax reliefs to Freeports — enhanced capital allowances, business rates relief, SDLT relief and Employer NI relief — but focused on different sectors and locations, and generally without the customs and trade elements that are specific to Freeports. A business should check which specific designated tax site (Freeport or Investment Zone) its premises fall within, since the precise site boundary determines eligibility.
What is the enhanced capital allowance available in a tax site?
Businesses investing in qualifying new plant and machinery for use within a Freeport or Investment Zone tax site can claim a 100% first-year enhanced capital allowance, allowing the full cost of qualifying expenditure to be deducted from taxable profits in the year of purchase, rather than spread over several years through normal capital allowances. This is available in addition to, or as an alternative to, other capital allowances such as the standard Annual Investment Allowance, depending on which produces the best outcome for the business.
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What is the enhanced structures and buildings allowance in a tax site?
For qualifying new non-residential structures and buildings built or acquired within a Freeport or Investment Zone tax site, an enhanced rate of structures and buildings allowance applies — 10% per year on a straight-line basis, allowing the full cost to be written off over 10 years, compared with the standard 3% rate (33 years) available outside these designated sites.
How does business rates relief work in a Freeport or Investment Zone?
Eligible new businesses (or existing businesses expanding) within a designated tax site can claim full business rates relief on qualifying premises for a set number of years from the point they first become eligible, subject to a maximum relief period and subsidy control limits. The relief is administered by the local billing authority, and businesses should apply directly to the relevant council rather than assuming it applies automatically.
What is the Freeport and Investment Zone Employer National Insurance relief?
Employers with a business premises in a Freeport or Investment Zone tax site can claim relief from secondary (employer) Class 1 National Insurance contributions on the earnings of new employees who spend most of their working time at that site, up to an upper secondary threshold, for a set number of years from when the employee starts. This relief is claimed through payroll using a specific category letter, and detailed conditions apply around what counts as "new" employment and the qualifying employee's working pattern.
What SDLT relief applies to land purchased within a tax site?
Land and buildings purchased for qualifying commercial purposes within a Freeport or Investment Zone tax site can benefit from full relief from Stamp Duty Land Tax, provided the property is acquired and used for a qualifying purpose (broadly, use in a trade, or for the construction of a new structure to be used for a qualifying purpose) within a set control period after purchase. If the qualifying use condition is not met within the control period, the relief can be clawed back and the SDLT becomes payable.
How long do Freeport and Investment Zone tax reliefs last?
The reliefs are time-limited. The Employer NI relief and business rates relief are generally available for a fixed number of years from the point a business or employee first qualifies, while the enhanced capital allowances and structures and buildings allowance apply to qualifying expenditure incurred within the designated tax site's window, which itself runs for a set number of years from the site's formal designation. Because designation dates and windows vary between individual sites, businesses should check the specific dates that apply to their location rather than assuming a single UK-wide deadline.
Do these reliefs apply automatically or does a business need to claim them?
None of the reliefs apply automatically. Capital allowances and structures and buildings allowance claims are made through the business's Corporation Tax or Self Assessment return. Business rates relief must be applied for through the local billing authority. Employer NI relief is claimed through payroll using the correct category letter. SDLT relief is claimed on the SDLT return for the transaction. Missing the correct claim process for each relief means it will not be given, even if the business genuinely qualifies.
Can a business outside a designated tax site boundary still benefit?
No. All of these reliefs are strictly tied to a business having premises, employees working, or property located within the specific geographic boundary of a designated tax site — being in the same town or region as a Freeport or Investment Zone is not sufficient if the specific site (which is usually a fairly small, precisely mapped area) does not cover the business's actual location. The exact boundaries are published by the relevant local authority or government body responsible for each site, and should be checked against the business's precise address.
Disclaimer: This guide is for general information only and does not constitute personal or business tax advice. Freeport and Investment Zone site boundaries, relief periods and conditions vary by location — always confirm current details with the relevant local authority or a qualified tax adviser.
