Tax dates

Pay Corporation Tax

Corporation Tax is due nine months and one day after the end of the company's accounting period. Unusually, the payment is due before the return.

Who it applies to

Is this you?

Every limited company with taxable profits. Companies with profits over £1.5 million pay in instalments instead.

What has to happen

The detail

A year end of 31 March 2027 means payment by 1 January 2028. The figure comes from the tax computation, so the accounts need to be well advanced before the payment date, not just before the filing date.

Buzz's portal shows an estimate of the tax building up during the year and a monthly amount to set aside, so the payment is not a surprise.

If you miss it

What it costs

Interest from the due date. Source: gov.uk and Companies House guidance, checked September 2026.

What to do

Now

Enter your year end below for your dates, and set aside for the tax monthly rather than finding it in month nine.

Other dates

In the same area

  • Depends on your dates
    File the Company Tax Return (CT600)Corporation Tax
    Details

Let Buzz keep track of the deadlines for you

Every filing has a date and a name against it in your portal, and we do them.

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