“Freeport” sounds like something to do with shipping containers and customs duty, so most developers assume it has nothing to do with them. It does. Buried inside the Freeport and Investment Zone programme is a genuine property tax package — SDLT relief, accelerated capital allowances, an enhanced Structures and Buildings Allowance and a business rates holiday — available to anyone building or investing on the right patch of land, and the North West has more of that land than most regions realise.
The relief menu, relief by relief
Five separate reliefs are available to a qualifying business investing within a designated tax site. They are not automatic — each has its own conditions and claim process — but stacked together on a genuine development project, they are worth planning around rather than discovering after completion.
SDLT relief on the land purchase
A land transaction qualifies for full relief from SDLT if at least 90% of the chargeable consideration is attributable to land within the designated tax site. Between 10% and 90%, partial relief applies on a proportionate basis. Relief is not unconditional: a control period of three years from the effective date runs alongside it, during which the land must be used, or held for use, in a qualifying manner. Fail that test before the control period ends and the whole of the relief originally claimed is clawed back — not tapered, the full amount — so a site bought on the strength of this relief needs a realistic delivery timetable behind it, not just an intention.
A 100% first-year allowance with no cap
Qualifying new plant and machinery bought for use within a tax site attracts a 100% enhanced capital allowance in the year of expenditure. Unlike the ordinary Annual Investment Allowance, which is capped at £1 million a year across a business's entire spend, this relief has no site-specific cap, which matters on a project where the fit-out and plant spend inside the tax site genuinely runs past that figure in a single year. See our guide to capital allowances on commercial property for how plant and machinery is identified and pooled outside a tax site.
Structures and Buildings Allowance at 10%, not 3%
Construction or renovation of a non-residential building within a tax site qualifies for an enhanced 10% a year Structures and Buildings Allowance, written off in full over ten years — against the standard 3% rate that stretches the same relief over 33 and a third years everywhere else, which we cover in detail in our Structures and Buildings Allowance guide. On a genuinely sizeable construction cost, that difference in pace is worth a serious cash flow conversation on its own, independent of anything else the tax site relief package offers.
Employer NICs relief — now largely closed to new hires
Eligible employers could claim a zero rate of secondary Class 1 National Insurance on up to £25,000 of an eligible employee's earnings a year, for up to 36 months per employee, provided the employee spent at least 60% of their working time at the tax site. That relief was only available for employments starting on or before 5 April 2026, a deadline that has now passed, though employees already claiming it continue to receive the relief for their full 36-month window within the wider sunset. Anyone assuming this relief is still open to fresh hires should check current eligibility before relying on it in a business case.
Business rates relief on new or expanded premises
Full, 100% relief from business rates is available on qualifying new premises within a tax site, and partial relief on the expansion of existing premises, running for five years from the point the relief is granted. Unlike the SDLT and capital allowances reliefs, this one depends on the relevant local billing authority having adopted it, so it is worth confirming with the authority directly rather than assuming it applies uniformly across every designated site.
Where the North West's tax sites actually are
The Liverpool City Region Freeport has three designated tax sites: Wirral Waters around Birkenhead Docks, Parkside in St Helens, and 3MG in Widnes. Separately, the Liverpool City Region Investment Zone has its own designated tax sites, effective from April 2024, at the St Helens Manufacturing and Innovation Campus, Sci-Tech Daresbury and Maghull Health Discovery Park, spanning St Helens and Halton. Both programmes offer broadly the same relief menu, but on different sunset timetables — the Freeport sites run to 30 September 2031, following the extension announced at Autumn Budget 2024, while the later-designated Investment Zone sites run to 30 September 2034.
Why Greater Manchester is different
Not every Investment Zone carries tax incentives. Greater Manchester Combined Authority chose not to adopt the tax relief element of its Investment Zone allocation, directing its funding toward grant and non-tax business support instead. A development in Trafford Park or Salford Quays gets none of the SDLT, capital allowances, SBA or NICs reliefs described above, however closely the scheme is associated with the wider Investment Zone programme — a distinction that trips up developers who assume every combined authority area offering an Investment Zone offers the same package.
The boundary is the site, not the borough
Relief only applies within the specific mapped boundary of a designated tax site — a plan held by the relevant authority, not the wider local authority area the Freeport or Investment Zone is named after. Being in St Helens is not the same as being within the Parkside or St Helens Manufacturing and Innovation Campus boundary; being in Liverpool City Region generally is not the same as being within Wirral Waters, 3MG or Sci-Tech Daresbury. Checking a site plan against the actual designated boundary, before a site is acquired on the strength of these reliefs, is a five-minute exercise that avoids a very expensive assumption.
Getting the sequencing right
SDLT relief is claimed through the land transaction return at completion, not retrospectively. Capital allowances and the enhanced SBA both depend on the same cost segregation discipline that matters on any commercial development — splitting land, structure and fixtures correctly at the point of spend, not reconstructed from invoices months later. Business rates relief needs the local authority's involvement before the premises are occupied. None of these are difficult individually, but a project that only discovers the tax site package exists after land has already exchanged has usually missed the SDLT relief, and often the cleanest route to the others as well.
Common questions
What tax reliefs are available in a Freeport or Investment Zone tax site?
Five reliefs sit on the table for a qualifying business investing in a designated tax site: full or partial relief from SDLT on the land purchase, a 100% first-year capital allowance on qualifying plant and machinery, an enhanced 10% a year Structures and Buildings Allowance in place of the standard 3%, a zero rate of employer National Insurance on up to £25,000 of an eligible employee's earnings for up to 36 months, and 100% business rates relief for five years on new or expanded premises.
Where are the Freeport and Investment Zone tax sites in the North West?
The Liverpool City Region Freeport has three designated tax sites: Wirral Waters around Birkenhead Docks, Parkside in St Helens, and 3MG in Widnes. The Liverpool City Region Investment Zone has separately designated tax sites at the St Helens Manufacturing and Innovation Campus, Sci-Tech Daresbury and Maghull Health Discovery Park, across St Helens and Halton. Greater Manchester's Investment Zone does not carry equivalent tax reliefs.
Until when can these reliefs be claimed?
The sunset date was extended at Autumn Budget 2024. Qualifying expenditure in English Freeport tax sites, including the Liverpool City Region Freeport, attracts relief until 30 September 2031. Investment Zone tax sites, designated later, run to 30 September 2034. The employer National Insurance relief closed to new hires from 6 April 2026, though existing claims continue for their full 36-month window within that overall sunset.
Does a site being in a Freeport borough automatically qualify for relief?
No. Relief only applies within the specific mapped boundary of a designated tax site, not across the wider local authority area the Freeport or Investment Zone covers. A scheme a short distance outside the boundary gets none of these reliefs, however closely it is associated with the programme, so the boundary needs checking against the site plan before relief is assumed.
Kieran Holsgrove is a Director and Co-Founder of Grafene Accounting, the property tax specialist firm based in Liverpool. He advises property developers, investors and landlords across Merseyside, Greater Manchester, Lancashire and Cheshire on tax structuring, developer VAT, SDLT and the long-view decisions that compound over the life of a portfolio.
This article is general information, not personal tax advice, and tax rules change. Your own position depends on facts we cannot see from here — please take advice before acting on anything above.