This Practice Note sets out the key UK tax rates, thresholds and allowances. This Practice Note is intended as a quick reference guide, not a comprehensive resource. It covers the main rates, thresholds and allowances for UK resident individuals and companies for the current tax/financial year and the previous tax/financial year. For more detail on the tax rates for private clients, including inheritance tax, see Practice Note: Key UK tax rates, thresholds and allowances for Private Client. For more historical and further information on rates, thresholds and allowances, see: Whillans's Tax Tables. Corporation tax Rate or other amount Financial year ending 31 March 2027 Financial year ended 31 March 2026 Statutory references Main rate 25% 25% Finance Act 2026 (FA 2026), s 11(2)Finance Act 2025 (FA 2025), s 13(2) Small profits rate (1) 19% 19% FA 2026, s 12(a)FA 2025, s 14(a) Lower limit (the limit to which the small profits rate will apply to a company without associated companies and with a 12-month accounting period) £50,000 £50,000 Corporation Tax