UK Budget 2026: New "Sovereign Tax Status"

As part of UK Budget 2026 delivered on 28 October, 2026, HM Treasury published a consultation on modernising the UK taxation of foreign sovereign investors. 

Existing and ‘potential’ sovereigns will take a keen interest in the development of this regime through the consultation process and will need to consider their investments and structures in detail to ensure future efficiency. A similar consultation in 2022 ultimately resulted in no changes to the regime, but that seems unlikely to be the outcome this time round. 

From 1 January 2029, the current blanket sovereign immunity from direct tax will be replaced by more limited specific exemptions for those qualifying for a new statutory "sovereign tax status".  The Government expects the main effect to be that returns from directly held UK real estate come into charge to tax for the first time. UK trading income will also be taxable in what HM Treasury describes as limited circumstances.

Summary 

• Remaining exempt: UK-source interest; dividends (as for other non-resident investors); and, for State-operated Overseas Pension Funds (SOPFs) only, chargeable gains.
• Becoming taxable: UK property income; gains (other than by SOPFs) on direct and indirect disposals of UK land; and UK trading income.
• New REIT route: sovereigns will be able to control or wholly own UK REITs. They can do so through an optional UK "sovereign REIT holding company", intended to address the punitive holders of excessive rights rules, which is taxed at a reduced rate of 15% on the gross amount of property income distributions. Sovereign REIT holding companies will need to be UK tax-resident and notified to HMRC.

Eligibility for sovereign tax status is intended to be broadly drawn. It includes states (including every constituent territory of a federal state), central banks, sovereign wealth funds, SOPFs and wholly owned state entities. However, wholly owned state entities qualify only if they are incorporated and resident in the sovereign's home country. The Government is specifically consulting on the impact of that condition. The separate crown immunity regime will also be brought within the new sovereign tax status regime.

As can be seen from the summary, SOPFs will qualify for a wider range of exemptions than other sovereigns. To qualify as a SOPF, the fund will need to be established outside the UK by or under an enactment of a foreign sovereign state or constituent territory of a federal state. 

Funds established by local authorities or municipalities will be excluded. The fund will need to be established and operated exclusively or almost exclusively to administer or provide retirement benefits and ancillary or incidental benefits. Those benefits must be provided to individuals employed exclusively or almost exclusively in the provision of government, public or social services to the relevant state or constituent territory.

Some entities which do not currently benefit from UK sovereign immunity may qualify under the new codified regime, for example US state entities and pension schemes and subsidiaries of existing sovereign investors.  

For existing sovereign investors, the changes will significantly impact their existing UK real estate structures, both increasing the amount of UK tax to which they are likely to be subject but also meaning that they will likely need to restructure to make the best use of the new exemptions.

Sovereigns often join with other investors to make these investments, which may complicate any restructuring. One common structure is for investors to pool capital in a UK company which will make the disposal, intending to rely on a total or partial exemption from UK tax on gains depending on the extent to which the investors are “qualifying institutional investors”. Generally speaking sovereigns other than SOPFs will no longer count as QIIs for these purposes and this will correspondingly increase the effective tax rate on gains in this common structure.

UK investment operations exemption

This is a welcome feature for sovereigns that manage global portfolios from London. Investment management carried on by a sovereign's UK investment office will be exempt from UK Corporation Tax on the profits that might otherwise be attributed to it. The conditions are that the activity is carried on specifically to manage the sovereign's own portfolio and for that sovereign's benefit. The exemption applies whether the office is a UK branch or a UK subsidiary.  The government's stated intention is that returns on non-UK assets should not be brought into UK tax simply because they are managed from the UK.

Timing 

• Consultation period closes on 20 January 2027.
• Later in 2027: a technical consultation on draft legislation is expected, ahead of final legislation in Finance Bill 2027-28.
• From 2028 until at least 31 December 2030: a time-limited SDLT relief will be available for restructuring UK real estate holdings, including into REITs. The proposal is that relief is clawed back if the acquiring entity changes control within three years. It applies to property in England and Northern Ireland only.
• Mid-2028: HMRC expects to start accepting applications for sovereign tax status no later than six months before commencement. Sovereigns that currently benefit from immunity will need to apply, although the government plans a streamlined process.
• 1 January 2029: the new regime takes effect, and current immunity continues to apply until then. Assets newly brought into charge to tax on gains will be rebased to market value at that date. 

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