The government has published a response to its consultation 'Simplifying the taxation of offshore interest.' It confirms that while stakeholders broadly support efforts to simplify the rules, there are mixed views on moving to a calendar-year basis for taxing offshore interest. Further work will be undertaken before any legislative changes are made.
Background
The Consultation, published in October 2024, considered how the UK tax treatment of Offshore interest could be simplified.
The current rules tax individuals on interest arising in a UK tax year, but offshore income is typically reported on a calendar year basis.
- This mismatch requires taxpayers to apportion income between tax years, which can add complexity and increase the risk of errors.
One option explored in the consultation was to align the taxation of offshore interest with the calendar year, so that income arising in the year to 31 December would be taxed in the corresponding UK tax year.
- The consultation also sought views on wider interactions with other policies and the reporting requirements for individuals with offshore income.
The consultation builds on a previous consultation published by HMRC, 'Helping taxpayers get offshore tax right'.
Responses
The consultation received 19 responses.
- There was recognition that the current mismatch between calendar-year reporting and the UK tax year creates challenges both for taxpayers and HMRC's compliance processes.
- There were mixed views on the proposal to move offshore interest to a calendar-year basis, with some respondents agreeing it could improve alignment with information received under international reporting regimes.
- Concerns were raised that adopting a calendar-year basis for offshore interest alone could introduce new complexity, particularly where different types of income, for example, UK interest or other overseas income, continue to be taxed on a tax-year basis.
- There was feedback that a partial change could create inconsistencies in how different income streams are taxed, potentially complicating calculations such as the personal savings allowance.
- Concerns were also raised about the practical implementation, including how to treat jurisdictions that do not use a calendar year for reporting, and the potential need for transitional rules.
- Respondents suggested that, if changes are made, consideration should be given to extending them beyond offshore interest to cover other types of offshore income to maximise simplification.
- There were views that further alignment of systems could enable better use of data, including pre-population of tax returns.
- Some respondents proposed alternative approaches, such as switching the UK tax year to align with the calendar year.
Overall, while respondents broadly agreed that the existing system is problematic, there was no single preferred solution.
Next steps
The government has not committed to immediate legislative change.
- Instead, it will continue to explore the options for simplifying the taxation of offshore interest, taking into account the feedback received.
In the meantime, the government emphasises that improving compliance remains a priority, with continued use of international data-sharing arrangements to identify discrepancies and support more accurate reporting of offshore income.
Useful guides on this topic
Foreign income and residency pages: FAQs
How do you complete the foreign and residency pages of the Self Assessment return?
Offshore Income Tax Toolkit
This toolkit provides an outline of the tax issues for UK resident individuals with offshore income and investments.
Common Reporting Standard (CRS)
What is the Common Reporting Standard (CRS)? What are the consequences of the CRS?
Savings income: How interest is taxed
What is savings income? How is savings income taxed? What allowances are available? What is the Accrued Income Scheme?
External link
Simplifying the taxation of offshore interest - summary of responses