Autumn Budget 2025: Key Updates for UK Expats
The 2025 Autumn Budget delivered a series of tax increases that may affect individuals with UK savings, investments or property. For expats, the headline is simple. The UK tax framework is shifting, and this budget introduces several measures which increase the potential tax burden on passive income and certain forms of UK linked wealth. Even if you are no longer UK resident, these changes may still have implications depending on your ongoing UK connections.
For many expats, the most important factor is how UK rules interact with the tax system in their country of residence. As the UK framework tightens, cross border factors are likely to play a greater role in determining overall outcomes. This overview summarises the key points that matter most for internationally mobile individuals.
Key Budget Changes That Affect UK Expats
Income tax thresholds remain frozen
The Government has confirmed that existing thresholds will remain frozen until 2030. This means more taxpayers are likely to gradually be pushed into higher tax bands over time as income rises. If you have UK source income, including rental income or a UK pension, you may face higher tax charges in future years even though headline tax rates themselves did not rise.
Higher tax on savings, dividends and rental income
Tax rates on savings interest, dividends and rental income will rise by two percentage points. This may be one of the most important changes for expats. Many expats keep UK bank accounts, rental properties or investment portfolios, so the net return from these assets may be reduced.
Cash ISA allowance reduced for many
For individuals under the age of 65, the annual Cash ISA allowance will fall to twelve thousand pounds. The twenty-thousand-pound allowance will continue to apply for those aged 65 and over. This change means that working age individuals who use UK ISA’s, including expats who retain UK savings arrangements, may have a lower amount they can shelter from UK tax. The overall effect will depend on personal circumstances and how ISA rules interact with the tax regime of the individual's country of residence.
Salary sacrifice pension contributions restricted
A new cap of two thousand pounds will apply to salary sacrifice pension contributions from April 2029. This measure places a limit on how much can be contributed to pensions through salary sacrifice arrangements each year. It may be relevant for individuals with UK employment income, including expats who retain UK employment contracts. The core pension tax rules, including the twenty five percent tax free lump sum, remain currently unchanged.
New property related levies for high value UK homes
A new annual levy will apply to properties valued above two million pounds. This may affect expats who continue to own UK homes or investment properties at higher price points. The level of impact will depend on individual circumstances and how the rules interact with the individual’s country of residence.
What These Changes Mean For UK Expats
UK investments may deliver lower net returns
Higher taxation of savings, dividends and rent may make UK domiciled investments relatively less attractive. Expats who rely on UK passive income may find it helpful to review whether their portfolio is structured in a tax efficient way.Property holdings need a fresh assessment
If you still own UK property, the combined effect of higher rental income tax, frozen thresholds and new levies on high value homes could affect the overall cost of ownership. Some expats may wish to revisit whether holding UK residential property remains aligned with long term goals.
ISA efficiency is reduced
With a lower ISA allowance for under 65s, expats may find ISAs more restrictive as a long-term tax efficient savings vehicle. Alternative savings or investment structures may form a greater part of future planning.
Retirement planning should be reviewed
Although the majority of pension rules remain unchanged, the new salary sacrifice cap will limit the ability to boost pension wealth efficiently for anyone still contributing to a UK scheme through employment. This will come into effect in April 2029.
Cross border planning becomes more important
Most expats hold assets in more than one country. Rising UK tax rates make it more important to understand how assets are taxed both in the UK and in the country where you live, as well as how the relevant double tax treaty applies.
What Did Not Change
Some familiar rules remain intact.
• The twenty five percent tax free pension commencement lump sum remains available.
• No increase to core PAYE tax income and allowances as these are frozen until 2030.
• No changes to capital gains tax rates at this stage.
• No reform of inheritance tax within this Budget.
Stability in these areas provides some continuity, but the direction of travel indicates a move toward taxing savings, investments and property rather than headline income tax rates.
What Expats Should Do Now
1. Review all UK source income
Understand how the updated tax rates on rental income, dividends and savings may affect your overall income, cash flow or investment strategy depending on individual circumstances and cross border tax rules.
2. Reassess your UK property exposure
Consider the implications of the new annual property levy when considering whether to retain or restructure property holdings.
3. Revisit your long term savings strategy
With ISA limits to be reduced from April 2027 for those aged under 65. It will soon be time to evaluate whether alternative investment vehicles or offshore arrangements may provide more flexibility and efficiency.
4. Check your retirement planning
If you are on a UK contract and contributing to a pension via a UK employer this may affect you
5. Update estate and inheritance planning
Ensure wills, trusts and cross border planning reflect current rules in the UK and/or jurisdiction of residence, especially if you hold UK assets or expect to return in the future.
6. Seek personalised advice
Tax outcomes for expats depend heavily on residency, domicile and the interaction of international treaty rules. It is recommended that individuals seek professional advice to understand how these rules may apply to personal circumstances.
The Bottom Line
The 2025 Autumn Budget did not overhaul the UK tax system, but it has shifted the balance. The relative cost of generating income from savings, investments and property has increased, and some traditional UK savings tools now offer less tax efficiency.
For expats, this is a timely reminder to review UK linked assets and to ensure planning is aligned with both UK rules and the rules of your country of residence.
Making the Complex Simple for Expats Worldwide
At Forth Capital, we specialise in helping internationally mobile high net worth individuals’ structure, protect and optimise their wealth across borders. With the UK tax landscape shifting, it is more important than ever to understand how Budget changes interact with the tax rules in your country of residence.
From reviewing your UK assets and income sources to managing global portfolios, pensions and estate plans, we provide clear and personalised guidance designed to support tax efficient structuring and to help keep your wealth aligned with your long-term objectives.
If you would like to discuss how the Autumn Budget may affect your financial position - contact us today to schedule an initial consultation.
Important: Please Read
· This article is for general information only and does not constitute personal tax, financial or legal advice.
· This information is based on our understanding of the current tax rules applicable to the 2025/26 tax year, which are subject to change. Certain measures announced in the Budget relate to future implementation dates and may be amended further before they take effect.
· Tax treatment depends on individual circumstances, including residence, domicile and the nature of your income. The planning considerations outlined—such as pension contributions, salary sacrifice, timing of bonuses and charitable giving—may not be suitable for every individual and should not be acted upon without a full assessment of your personal situation.
· Nothing in this article should be taken as:
- Advice on how to structure remuneration or income
- A recommendation to undertake any specific planning
- A guarantee of tax outcomes
- A substitute for professional advice
· If you are an internationally mobile individual, personalised advice is essential, as UK tax rules can interact with foreign tax regimes, double tax agreements, and local reporting requirements.
This article has been produced and published on behalf of Forth Capital Advisers Limited, Forth Capital Geneve Sarl, Forth Capital (Hong Kong) Limited, Forth Capital (USA) LLC, Forth Capital (Australia) Pty Ltd, Forth Capital (Europe) Limited.
