Last updated: 2026-03-17
Corporation Tax in the UK: basics for limited companies
Limited companies pay Corporation Tax on taxable profits. Rates, allowances, and deadlines are set by government—use HMRC as the source of truth.
What it covers
Corporation Tax applies to trading profits, investment income, and chargeable gains for companies within the charge. You report and pay through HMRC processes described on GOV.UK.
Company Tax Return (CT600)
You normally file a Company Tax Return with HMRC for each accounting period, together with accounts where required. Software and agents must follow HMRC technical requirements.
Paying Corporation Tax
Payment deadlines depend on your company’s profits and accounting period. HMRC explains when to pay and how to calculate instalments for larger profits.
Official sources
Related guides
Disclaimer
Not tax advice. Confirm rates and deadlines with HMRC or your accountant.