Autumn Budget 2026 - modernising the UK tax treatment of foreign sovereign investors
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At a glance
- The current, non-statutory “sovereign immunity” from UK direct tax will be replaced by a new statutory “sovereign tax status” from 1 January 2029.
- The main effect is that returns from directly or indirectly held UK real estate (rents and gains), and UK trading income, will become taxable for the first time.
- Interest, dividends, and certain investment office profits remain exempt. State-operated Overseas Pension Funds maintain capital gains exemption.
- A bespoke REIT route will allow sovereigns to obtain a 15% tax rate on property income distributions.
- Transitional reliefs, including a time-limited SDLT relief from 2028, are intended to support restructuring. Consultation closes on 20 January 2027.
Overview of the changes
Today, foreign states and certain connected entities benefit from a broad exemption from UK direct taxes. That regime is not codified: it rests on principles of international law as interpreted by HMRC through administrative practice. At the Autumn Budget 2026 the Government announced that, from 1 January 2029, it will be replaced with a new statutory “sovereign tax status”, putting the UK taxation of sovereigns on a legislative footing for the first time. HM Treasury has published a consultation setting out the proposed design, to be followed by technical consultation on draft legislation and final legislation in Finance Bill 2027-28.
Sovereign tax status will be available to foreign states (including all constituent territories of federal states, but not municipal or local authorities), heads of state acting in a sovereign capacity, governments, central banks and monetary authorities, wholly state-owned entities incorporated and resident in the home state, sovereign wealth funds, a new category of State-operated Overseas Pension Funds (SOPFs), certain bodies performing government functions and wholly state-owned export credit agencies. The treatment of "Crown" entities (for example, Australian states and Canadian provinces) will be folded into the same framework. Status will be obtained through a formal HMRC application process, which existing sovereigns will also need to complete and HMRC expects to start accepting applications at least six months before commencement.
Outside the specific exemptions, sovereigns will be taxed in the same way as other non-resident investors. Sovereign entities will be treated as non-UK resident companies within corporation tax, while individuals (such as heads of state) will be subject to income tax and capital gains tax at standard rates.
Current and new position compared
| Type of return / asset | Current position (sovereign immunity, before 1 January 2029) | New position (sovereign tax status, from 1 January 2029) |
|---|---|---|
| UK source interest | Exempt. Payers can be relieved of withholding on HMRC authorisation. | Exempt. Payers can be relieved of withholding on HMRC authorisation. |
| Dividends | Exempt | Exempt |
| Income arising from UK land | Exempt where held directly. | Taxable. Non-Resident Landlord Scheme may apply. |
| Chargeable gains (direct and indirect disposals of UK land) | Exempt | Exempt for SOPFs; taxable for others. Assets rebased to market value at 1 January 2029. |
| PIDs paid by a UK REIT | Exempt | Taxable under new framework; controlling shareholdings in REITs permitted (15% rate via sovereign REIT holding company). |
Practical implications
Real estate investors
Directly held UK property is where the impact will be felt most. Many sovereigns hold UK real estate directly, or indirectly through transparent structures, so that income and gains accrue to them and fall within the immunity. From 2029, rental income will be taxable. Gains on direct disposals of UK land, and on interests in UK property rich vehicles, will also be taxable (other than for SOPFs), although assets will be rebased to market value as at 1 January 2029 so that pre-commencement gains are exempt. The substantial shareholdings exemption generally will not be available to sovereigns (other than SOPFs) on disposals of UK property rich vehicles.
Holders should therefore review their portfolios now. The Government expects the most common restructuring routes to be a UK corporate holding company or a REIT. To facilitate this, it proposes a time-limited SDLT relief, applying from 2028 until at least 31 December 2030, covering residential and commercial property held directly or indirectly (including partial interests), and acquisitions by qualifying companies, collective investment vehicles and REITs. A three-year clawback will apply if the acquiring entity changes control. The relief covers England and Northern Ireland only, with Scottish LBTT and Welsh LTT being matters for the devolved governments.
REIT structures
Sovereigns will be qualifying institutional investors for REIT purposes, and the holder of excessive rights (HoER) rules will be modified so that interests of a sovereign and its connected vehicles are aggregated. However, a sovereign may hold its stake through an optional, UK resident, wholly owned “sovereign REIT holding company”, which will be taxed at 15% on gross PIDs with no deductions. This allows a sovereign to invest 10% or more in a REIT while achieving the 15% rate commonly available to treaty investors. Sponsors and co-investors in existing REITs with sovereign shareholders should assess how these changes will affect their structures and investor agreements.
Corporate and fund structures
Dividends from UK companies will remain generally untaxed, and interest will stay exempt. Sovereigns will remain qualifying institutional investors for QAHCs, LTAFs, the non-resident capital gains rules for collective investment vehicles and the QII substantial shareholdings exemption (except in relation to UK property rich companies), which should limit the knock-on effect for co-investors in fund platforms. However, only SOPFs will be eligible investors in Exempt Unauthorised Unit Trusts, and the Double Taxation Treaty Passport Scheme is not currently to be extended to sovereigns. Managers with sovereign investors should check fund documentation, eligibility conditions and withholding procedures.
Investment offices and pension funds
Sovereign investment returns in relation to assets located outside the UK should not be brought into the charge to UK tax simply because investment management functions are undertaken from the UK. Where the investment returns are UK source and derived from UK assets, these returns will be subject to UK tax under the new sovereign tax status regime. Certain UK investment management activities carried on by investment offices of sovereign tax status investors will be exempt from corporation tax.
State pension and social security funds should consider whether they meet the new SOPF definition, which brings an exemption from tax on chargeable gains, including on disposal of UK property rich vehicles.
Timeline and next steps
| Date | Milestone |
|---|---|
| 20 January 2027 | Consultation closes |
| 2027-28 | Technical consultation on draft legislation; legislation in Finance Bill 2027-28 |
| 2028 | Time-limited SDLT restructuring relief begins; HMRC applications open (at least six months pre-commencement) |
| 1 January 2029 | Sovereign tax status regime takes effect; assets rebased |
| At least 31 December 2030 | SDLT restructuring relief continues until at least this date |
We recommend that sovereign investors, funds, REITs and managers that work with them, map their UK holdings against the new rules, model the tax cost of the current structure from 2029, and consider whether to respond to the consultation.
The proposals remain subject to consultation and may change. Our CMS Real Estate, Corporate and Tax teams would be happy to discuss how the changes affect your structures.
