When is my company tax return due?

Corporation tax is due 9 months and 1 day after your company's accounting period ends. For example, if your year-end is 31st March, when is corporation tax due? The payment deadline is 1st January the following year. Large companies must pay quarterly instalments, whilst smaller companies pay the full amount by this single deadline to HMRC.

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When is my company tax return due?

The deadline for filing your company tax return is 12 months after the end of the accounting period it covers.



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