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Company filing deadlines calculator

Enter a limited company’s accounting period end to see its Companies House accounts deadline, corporation tax payment date, CT600 deadline and confirmation statement date.

Free to use, no sign-up. For UK private limited companies.

The last day of the period the accounts cover, usually the accounting reference date.
First accounts have their own deadline if the first period is longer than 12 months.
Use the confirmation date shown on the last statement filed.

Worked out in your browser. Nothing you enter is sent to us.

Enter an accounting period end date to see the company’s deadlines.

Deadlines for this company

    Track these dates for every client

    Engager brings in each company’s details and statutory deadlines from Companies House, then reminds you and your clients before they are due.

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    How it works

    How the deadlines are worked out

    DeadlineRuleSource
    Accounts to Companies House9 months after the accounting reference date. First accounts covering more than 12 months: 21 months after incorporation, or 3 months after the period end if later.Companies House
    Corporation tax payment9 months and 1 day after the end of the accounting period, for companies that are not large.GOV.UK
    Company Tax Return (CT600)12 months after the end of the accounting period.GOV.UK
    Confirmation statementWithin 14 days of the end of each 12 month review period.GOV.UK

    When a period ends on the last day of a month, the deadline is the last day of the relevant month. Deadlines still apply on weekends and bank holidays. Read our guide to company filing deadlines for worked examples and penalties.

    Questions

    Company deadlines FAQs

    When are a limited company's accounts due at Companies House?

    For a private company, 9 months after its accounting reference date. A company's first accounts are due 21 months after incorporation if they cover more than 12 months, or 3 months after the period end if that is later.

    When is corporation tax due?

    For most companies, 9 months and 1 day after the end of the accounting period. Companies with large profits pay in quarterly instalments instead.

    When is the Company Tax Return (CT600) due?

    12 months after the end of the accounting period it covers. The tax is usually due before the return.

    What if the accounts cover more than 12 months?

    A corporation tax accounting period cannot be longer than 12 months, so a longer period of accounts is split into two accounting periods for corporation tax, each with its own payment date and return deadline.

    Is my information saved?

    No. The calculator works in your browser and nothing you enter is sent to Engager.

    ✓Deadlines synced✓Records requested

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