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UK Company Compliance Calendar 2026

Every compliance deadline your UK company needs to know, in one place. Bookmark or print this page as a reference.

Company incorporated

First confirmation statement due

Within 14 days after the first review period ends, the day before the first anniversary of incorporation

Within 3 months of starting to trade

Director ID verification

Existing directors: provide the personal code with the next confirmation statement

Financial year-end

Annual accounts → Companies House

9 months after year-end (private company)

Corporation Tax return (CT600) → HMRC

12 months after year-end

Corporation Tax payment → HMRC

9 months and 1 day after year-end

Confirmation statement

Annual confirmation statement → Companies House

Every 12 months from the last statement date

Filing window

Up to 14 days after the review period end date

VAT (if registered)

VAT return → HMRC

1 month and 7 days after the end of each VAT period

VAT payment → HMRC

Same date as the return

Registration threshold

Over £90,000 in the last 12 months: register within 30 days of the end of the month you went over. Expecting over £90,000 in the next 30 days alone: register by the end of those 30 days

PAYE / payroll (if registered)

Monthly PAYE payment → HMRC

19th of the following month (22nd if paying electronically)

Annual P60 to employees

By 31 May following the tax year end (5 April)

P11D (benefits) → HMRC

By 6 July following the tax year end

Ongoing obligations

Tell Companies House about a director change (appointment, resignation or new details)

Within 14 days of the change

New shares issued: return of allotment (SH01) to Companies House

Within one month of the allotment

Existing shares transferred between shareholders (if control changes, report the PSC change too)

Shown on your next confirmation statement

Report PSC changes to Companies House

Within 14 days of confirming the change

Maintain accounting records

For at least 6 years

Automatic penalties, quick reference

Event	Penalty
Late confirmation statement	VariableCompanies House may issue a financial penalty
Late annual accounts (up to 1 month)	£150
Late annual accounts (1–3 months)	£375
Late annual accounts (3–6 months)	£750
Late annual accounts (over 6 months)	£1,500doubles for repeat offence
Late Corporation Tax payment	Interestcharged daily from the day after the deadline, 9 months and 1 day after the period end
Late Corporation Tax return (CT600)	£200+flat penalties, then 10% of the unpaid tax at 6 months and 20% at 12

Director ID verification is mandatory now

Mandatory verification began on 18 November 2025. New directors verify before appointment; existing directors provide their personal code with the company's next confirmation statement. Fileminder is an authorised ACSP and can help remotely.

Learn more →

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* Guide deadlines for private limited companies. Always verify your specific dates with your accountant.

Disclaimer

This tool is for general guidance only. It does not replace official deadlines, Companies House records, HMRC guidance, or professional advice. Always confirm your own dates and figures with the official sources.