UK 2026 Budget Announces 3‑6% Bank Corporate Tax Surcharge, Other Key Tax Moves
The Chancellor lifts the Bank Corporate Tax Surcharge to 6% for 2027, adds new founder’s relief, and revamps foreign PE rules – a flood of tax changes that will touch banks, multinationals, and UK‑based enterprises.
The 2026 UK Budget introduces a suite of tax reforms with broad industry impact. The most immediately striking change is the temporary doubling of the Bank Corporate Tax Surcharge from 3% to 6% (Jan 2027‑Mar 2028), up‑front costs that banks and their borrowers should model. Concurrently, the government expands founder‑focused relief by offering a 10% rate on up to £10 million of lifetime gains, while halving the lifetime limit for Business Asset Disposal Relief. The foreign permanent establishment exemption becomes mandatory, constraining how foreign‑branch losses are treated. Additional shifts include new savings and property income tax rates, a Securities Transfer Tax replacing stamp duty (late 2027), and a tightened reverse‑charge rule on cross‑border services (April 2027). Treasury also lowers the Advance Tax Certainty Service minimum exposure to £300 million, broadening eligibility for large infrastructure and industrial projects. Firms need to reassess tax planning, adopt revised loss‑carry‑forward models, and advise clients on employment‑vote adjustments for non‑compete clauses. Monitoring the forthcoming Finance Bill 2026‑27 will identify the precise legislative timing and any subsequent amendments, especially for cross‑border entities, data‑centre operators, and oil & gas investors.