Corporate Tax Return Deadline 2025 Uk. Find out about the tax return deadlines for your business, including corporation tax, income tax, capital gains and more. The deadline for your tax return is 12 months after the end of the accounting period it covers.
It should usually be paid 9 months and 1 day after the end of your. The deadline for paying corporate tax is usually nine months and one day following the end of your accounting period.