The Remittance Basis Charge: Is It Still Worth Claiming?

The remittance basis charge (RBC) was one of the defining features of the UK's former non-domicile tax regime. Introduced in 2008 and increased several times before the regime's abolition in April 2025, it required UK-resident non-domiciled individuals who had been resident for a certain number of years to pay an annual charge in exchange for the right to shelter unremitted foreign income and gains from UK tax.

Following the non-dom reform of April 2025, the remittance basis is no longer available to new arrivals from that date. Instead, a new Foreign Income and Gains (FIG) regime applies. However, the RBC remains directly relevant for those who:

• Claimed it in years prior to April 2025 and need to understand past obligations
• Are assessing whether to remit historical foreign income and gains that arose under the remittance basis
• Were caught in transitional provisions
• Are advising on historical HMRC enquiries

This guide explains how the RBC worked, the thresholds that applied, the decision framework for claiming it, and what it means for your position today.

Background: The Remittance Basis in Brief

The remittance basis was an alternative basis of assessment available to UK residents who were not UK-domiciled (or were not deemed domiciled). Under the remittance basis:

• UK income and gains were taxed in full (as for any UK resident)
• Foreign income and gains were not taxed as they arose, but only when remitted (brought) to the UK

This provided a powerful deferral mechanism — and, in many cases, permanent avoidance if foreign funds were never remitted. For individuals with large overseas investment portfolios, business interests abroad, or offshore trusts, the potential saving was enormous.

However, the right to use the remittance basis was not free for long-term residents. From the 2008–09 tax year, HMRC introduced an annual charge payable in exchange for access to the remittance basis for those who had been UK-resident for seven or more of the previous nine years.

The Remittance Basis Charge: How Much Was It?

The charge evolved over the years. In its final form (applicable for tax years ending on or before 5 April 2025):

• £30,000 per year for individuals who had been UK-resident for at least 7 of the previous 9 tax years
• £60,000 per year for individuals who had been UK-resident for at least 12 of the previous 14 tax years

There was also a £90,000 charge that was briefly introduced for those resident in 17 or more of the preceding 20 years, but this was abolished in April 2017 when the deemed domicile rules were changed to bring 15-of-20-year residents into the arising basis automatically.

The charge was paid via self-assessment and was, in effect, a lump sum tax for the privilege of claiming the remittance basis. Crucially, paying the RBC did not exempt you from paying income tax and CGT on any amounts actually remitted to the UK — those remained taxable as usual.

The "Nomination" Requirement

When paying the RBC, you were required to "nominate" a specific item of foreign income or gain to which the charge would be treated as attributable. This nomination was required by law but had no substantive tax effect — it did not reduce the tax on the nominated item. Its purpose was largely administrative, allowing HMRC to track which individuals were claiming the remittance basis under the charge.

In practice, advisers typically nominated the smallest possible amount of income or gain to satisfy the requirement, ensuring the nomination did not inadvertently trigger an additional UK tax liability on a substantial item.

Was the RBC Worth Paying? The Decision Framework

The decision whether to claim the remittance basis (and pay the RBC) or instead use the arising basis (and pay full UK tax on worldwide income as it arose) required a comparison:

Arising basis liability: UK income tax on all worldwide income and CGT on all gains in the year, regardless of whether the income and gains are remitted to the UK.

Remittance basis + RBC: UK income tax on UK income only + CGT on UK gains + the RBC charge (£30,000 or £60,000) + UK tax on anything actually remitted.

The remittance basis was typically worth claiming if your unremitted foreign income and gains in the year exceeded the applicable RBC threshold by a comfortable margin. For a taxpayer paying income tax at 45% (the additional rate), the £30,000 RBC broke even if unremitted foreign income exceeded roughly £66,667. The £60,000 RBC broke even at around £133,333 of unremitted income.

However, the comparison was more complex in practice:

• The RBC is a flat cash cost; arising basis tax is a percentage of income, so the analysis changes each year
• Unremitted income and gains accumulate and may eventually be remitted (triggering UK tax), potentially at a higher future tax rate
• The choice must be made year by year — there is no irrevocable election
• Remitting in a year when you have not claimed the remittance basis is fine; remitting in a year when you have claimed it (and paid the RBC) triggers the full tax charge

In many cases, particularly for individuals with large unremitted offshore portfolios, the RBC was worth paying — and the strategy involved carefully managing remittances to the UK to ensure no foreign funds were brought in during years when the remittance basis was claimed.

The 2015 "Contamination" Rules and Mixed Funds

An important interaction arose from the 2012 and 2015 mixed fund ordering rules (see the separate guide on mixed funds). Once the remittance basis was claimed and foreign income/gains arose in offshore accounts, those accounts became "contaminated" — the funds within them were subject to specific ordering rules when remitted. This created a complex record-keeping obligation and, for many non-doms, ultimately made the offshore position difficult to unravel.

The £90,000 Charge and Deemed Domicile

The former £90,000 charge was abolished when HMRC changed the deemed domicile rules in April 2017. From that date, individuals who had been UK-resident for 15 or more of the previous 20 tax years became "deemed domiciled" in the UK for income tax and CGT purposes. Once deemed domiciled, the remittance basis was no longer available — you were taxed on the arising basis, like any UK-domiciled individual.

This change significantly narrowed the population of individuals who could still claim the remittance basis in the final years before its abolition.

The April 2025 Reform: End of the Remittance Basis

From 6 April 2025, the remittance basis was abolished for new arrivals. Individuals who arrive in the UK for the first time (or after at least a 10-year absence) can instead use the new FIG (Foreign Income and Gains) regime for their first four years of UK residence. Under FIG, foreign income and gains are entirely exempt from UK tax for four years, with no charge and no remittance restrictions. This is significantly more generous than the old remittance basis for new arrivals.

For individuals who were already UK-resident when the reform took effect, transitional provisions applied. Those who had been claiming the remittance basis had a window — via the Temporary Repatriation Facility (TRF) — to remit historical foreign income and gains at a reduced tax rate (12% in 2025–26 and 2026–27, rising to 15% in 2027–28). The TRF offered a genuine opportunity to clean up accumulated offshore positions at a lower cost than normal remittance rates.

What This Means Today: Residual Issues

For most individuals, the RBC is now a historical matter. But it remains relevant in the following contexts:

HMRC enquiries into past years. If HMRC is examining years prior to April 2025 and questions whether the remittance basis was correctly claimed, the analysis of whether the RBC was paid, whether the nomination was made correctly, and whether any remittances were properly declared becomes live again.

Historical accumulated foreign income and gains. If you built up a large offshore pool of unremitted income and gains under the remittance basis, and did not use the TRF window, those funds remain potentially subject to UK income tax or CGT if remitted in future (assuming you return to UK residence). The characterisation of those funds as "pre-2025 remittance basis income" is preserved and must be tracked.

Inheritance tax. Even after April 2025, unremitted foreign income and gains that were sheltered under the remittance basis may have IHT implications, particularly following the reform that treats 10-year UK residents as having worldwide assets within the UK IHT net.

Ongoing compliance for 2024–25. Individuals who were claiming the remittance basis in 2024–25 (the final full year of the old regime) still had RBC obligations to meet — either the £30,000 or £60,000 charge, or the arising basis. Returns for 2024–25 should have been filed by January 2026.

Practical Implications for Planning

If you have a historical remittance basis position, the key priorities are:

1. Trace and document offshore funds. Identify which funds arose as foreign income or gains under the remittance basis, and which are capital. Mixed funds are a significant complication.

2. Assess the TRF position. If you missed the TRF window, consider whether any other planning routes exist for managing the historical pool before any future return to the UK.

3. Plan future remittances carefully. Even outside the RBC regime, remitting historical foreign income to the UK (if you return to UK residence) will trigger a UK tax charge. Maintain clear records.

4. Review IHT exposure. If you have moved to deemed domicile status or have returned to the UK, your worldwide estate (including offshore funds) may now be subject to UK IHT. Review your estate plan accordingly.

How Global Investments Can Help

The non-dom reform of April 2025 fundamentally changed the landscape for internationally mobile clients. Global Investments has advised clients on remittance basis planning, RBC decisions, and the transition to the FIG regime, and we work with specialist UK tax lawyers to manage the residual complexity for those with historical offshore positions.

Whether you are dealing with a historical HMRC enquiry, considering remitting offshore funds, or planning a future return to the UK, we can introduce you to the right expertise and ensure your overall wealth strategy reflects the new environment. Contact our team for a confidential initial discussion.

This article is for general information only. Tax rules are complex, change frequently, and depend on individual circumstances. Nothing here constitutes personal tax advice. Always seek independent professional guidance tailored to your situation. Investments can fall as well as rise in value.