What’s Changing from 1 January 2027
A major reform to the foreign permanent establishment (PE) exemption under UK Corporation Tax comes into effect for accounting periods beginning on or after 1 January 2027. (gov.uk) Under the previous elective regime, companies could opt out of taxation of their UK foreign PE profits. That exemption option is being removed. All UK resident companies with foreign PEs will now be taxed, bringing profits back into UK Corporation Tax and restricting loss‐forwarding from their foreign operations. (gov.uk)
Who’s Affected
- UK resident companies with existing foreign permanent establishments
- Those entering new territories or setting up foreign branches for supply, production, or sales
- Companies using current loss clawback rules to offset early overseas losses against UK tax liabilities
Implications for Tax Planning & Entity Setup
Foreign operations structuring
- Companies may reconsider setting up branches versus subsidiaries abroad given loss relief and tax mechanics under the new regime.
- Jurisdictions with costly or complex reporting requirements could become less attractive for extension of operations.
Accounting period timing
- Because specific rules block abuse via changing accounting periods, any changes made after 13 July 2026 will be carefully scrutinised. (gov.uk) Timing structure around overseas losses may require earlier planning.
Practical Examples
- UK Retailer expanding into Europe: Previously could operate branches abroad and exempt foreign PE profits; now they’ll pay UK CT on those profits and can’t carry forward all overseas losses against UK taxable profit.
- Service Firm with Foreign Branches: Losses incurred overseas in early establishment years will have limited relief; profit and losses post-transition are taxed in UK jurisdiction.
Action Steps Before the New Rule Arrives
- Identify any foreign PEs and review how they are currently accounted for—whether profits or losses are claimed or deferred under elective exemption.
- Adjust financial models and forecasts from Jan 2027 onward to include foreign PE profits as taxable.
- Consult auditors/tax advisors to update accounting policies, group structures (subsidiary vs branch) and cross-border flow of income.
- Review anti-avoidance risks of restructuring after 13 July 2026—arrangements made then or later may face purpose-based rules. (gov.uk)
Long Term Considerations
Under the theme of simplification and fairness, this reform demonstrates the UK’s drive to protect its tax base—ensuring overseas costs don’t dilute UK tax revenue. Companies with global footprints should closely monitor Interaction with foreign tax credits and treaties.
Bottom line: For UK firms operating abroad, the foreign PE reform forces a re-think of what constitutes profit, loss, and when taxes are due. Structuring decisions made now will have ripple effects in tax and cash flow from 1 January 2027.