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Net profit before tax from your statutory accounts.
e.g. bank interest, rental income. (Dividends received are generally exempt — see the notes below.)
Associated companies share the profit thresholds. This figure includes your own company.
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Estimated Corporation Tax
£0.00
Effective rate 0%
Since April 2023, UK Corporation Tax depends on the level of a company's taxable profits. The same rules apply to Community Interest Companies, which pay Corporation Tax on any taxable profits just like an ordinary limited company. The rates below are those published by HM Revenue & Customs.
19%
Companies with taxable profits up to £50,000 (adjusted for associated companies).
Marginal
Profits between £50,000 and £250,000 (adjusted thresholds) receive marginal relief, giving an effective rate between 19% and 25%.
25%
Companies with taxable profits of £250,000 and above (adjusted for associated companies).
Where a company has one or more associated companies, the £50,000 and £250,000 thresholds are divided by the total number of associated companies plus one.
| Total companies | Small profits rate applies up to | Main rate applies from |
|---|---|---|
| 1 | £50,000 | £250,000 |
| 2 | £25,000 | £125,000 |
| 3 | £16,667 | £83,333 |
| 4 | £12,500 | £62,500 |
| 5 | £10,000 | £50,000 |
Corporation Tax is charged on your company's taxable total profits, not simply the profit shown in your accounts. The main adjustments are:
Source: Corporation Tax rates and marginal relief as published by HM Revenue & Customs, including the marginal relief fraction of 3/200 (HMRC Company Taxation Manual). Rates apply from 1 April 2023 and remain current. Last reviewed September 2026.
Here is how the calculation works for a typical CIC with no associated companies, trading profit and some disallowed expenses.
How the marginal relief is worked out: the formula is (upper limit − profits) × marginal relief fraction (3/200). Here that is (£250,000 − £100,000) × 0.015 = £2,250. This is then deducted from the tax at the main rate to give the final liability.
Quick answers to the questions CIC directors ask us most often about Corporation Tax.
Once you have estimated your Corporation Tax, these specialist guides and services will help you understand your CIC's tax position and stay compliant with HMRC and Companies House.
How Community Interest Companies are taxed, what income is taxable and which reliefs are available.
Read the guideSpecialist preparation and submission of your CIC Corporation Tax return (CT600) to HMRC.
View serviceAnnual accounts and CIC34 report prepared to SORP standards for Companies House and the CIC Regulator.
View serviceOur pillar guide covering CIC types, registration, tax obligations, annual filing and director responsibilities.
Read the guideWhether a CIC can claim Gift Aid, the rules that apply and what funding alternatives exist.
Read the guideWhich donations are tax deductible or disallowed, and how this affects the add-backs in your tax calculation.
Read the guideWhat the CIC34 report is, who must file it, what it must contain and how to stay compliant.
Read the guideWhen charities must file a CT600, what counts as taxable income and HMRC's latest changes.
Read the guideSpecialist CIC accounts, Corporation Tax, bookkeeping and CIC34 reports for London social enterprises.
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