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Limited company formation guides · 6 min read

A first-year compliance calendar for a new company

Build a first-year UK company calendar covering accounts, Corporation Tax, confirmation statements and activity-dependent tax registrations.

Jurisdiction: United Kingdom.

A new company has several reporting and payment clocks. The first accounts period, Corporation Tax period and confirmation statement review period are different. A reliable calendar identifies the obligation, due date, person responsible and evidence of completion.

Start with the actual company record

Record the incorporation date, accounting reference date and stated filing deadlines. Do not assume the first accounts are due on the first anniversary or that every subsequent filing falls on the same day.

Official guidance gives a general first-accounts deadline of 21 months after incorporation for a private company, with annual accounts normally due nine months after the financial year end. Check the actual period and any special circumstances or changes. [1]

Separate tax filing from tax payment

For companies under the usual payment timetable, Corporation Tax is generally payable nine months and one day after the tax accounting period ends, while the return is due twelve months after that period. Different payment arrangements can apply to larger companies. [1]

The first company accounts can span more than twelve months, but a Corporation Tax accounting period cannot. More than one tax return and payment date may therefore be needed. [2]

Add events triggered by activity

The date business activity begins matters for the HMRC notification. Add the relevant action when the company becomes active, rather than waiting for an annual accounts reminder. [3]

Also assess VAT, payroll, pensions and sector-specific obligations when the facts require them. A calendar built at incorporation should be reviewed when the company hires someone, changes activity or reaches a relevant threshold.

Include the confirmation statement

Record the confirmation statement review period and deadline from Companies House separately from accounts. Ensure the required identity-verification information and company changes are dealt with in time. The confirmation statement is not a substitute for the annual accounts or tax return. Review and file at least once every twelve months; the filing window extends fourteen days beyond the end of the review period. Check the company record for the actual dates and the effect of any early filing. [4]

Make the calendar operational

  • Assign a named owner for every filing and payment.
  • Set an earlier deadline for providing records to the accountant.
  • Include a review point before funds must be available.
  • Retain acceptance receipts and payment confirmations.
  • Recheck dates after changing the year end or adviser.

Review monthly, not only when a reminder arrives

A short monthly check can identify missing bookkeeping, inaccessible official mail or an unconfirmed filing. Reminders are useful, but the calendar should remain effective even if an email is filtered or an adviser changes.

Build a calendar with evidence fields

For every obligation, record the period covered, official due date, internal preparation date, responsible person and completion evidence. Keep filing and payment in separate rows where they are separate actions. Add a status such as awaiting records, draft under review, submitted or accepted rather than marking a task complete as soon as an adviser begins it.

Set internal dates according to the work required. An accountant needs time to reconcile records and resolve questions before directors approve accounts. A tax payment needs available funds and the correct payment reference. The statutory deadline should be the final boundary, not the date on which the company first starts gathering information.

Example: formation and activity start on different dates

Consider an illustrative company incorporated in June that does not begin the relevant business activity until September. Its Companies House accounts period still needs to be established from the company record, while the tax periods must reflect the actual activity and applicable rules. Ask the accountant to map both sets of dates before populating the diary. [2][3]

Add any action triggered at the September start rather than leaving all tasks near the incorporation anniversary. If staff are employed or new registrations are required later, add those events when the facts arise. A first-year calendar is a living record of the business, not a fixed list generated once at incorporation.

Give the confirmation statement its own review process

Prepare time to check the company information and obtain any required director identity details before the statement is due. Identify changes that need a separate filing instead of assuming the statement can be used to report everything. Keep the acceptance confirmation with the period reviewed.

If a filing agent is engaged, ask who will request information from the directors and how unresolved items will be escalated. A reminder sent to an unmonitored founder inbox is not an effective process. Establish a backup contact and make sure the directors can see whether the filing has been accepted.

Reconcile the calendar every month

Compare upcoming tasks with the actual state of the records and available cash. Chase missing invoices before they become year-end queries. Check whether an address change, new adviser or changed accounting reference date has altered the schedule or access arrangements.

For overdue tasks, identify the precise obligation and obtain advice on the remedy promptly. Do not remove an overdue item from the calendar simply because a new period has started. Keep the correction and any correspondence linked to the original due date.

At the end of the first year, use the completed calendar to plan the next cycle. Identify where records arrived late, approvals stalled or payment preparation was rushed. Adjust the internal timetable while retaining the official dates and evidence, so the second year benefits from what the company learned in its first.

Ask for a first-year schedule that shows the actual dates for your company. A generic timetable is a starting point, not a replacement for checking the company's own record and tax periods.

For a scoped enquiry about setting up the first-year timetable, read about new company compliance planning.

Frequently asked questions

Are accounts and a confirmation statement the same filing?

No. They report different information and have separate requirements and deadlines.

Can the first year require two Corporation Tax returns?

Yes. A tax accounting period cannot exceed twelve months, while the first set of company accounts commonly covers a longer period.

Can the accountant own the whole compliance calendar?

An accountant can manage agreed tasks, but directors still need visibility and oversight. Document the engagement scope, your information deadlines and how acceptance and payment are confirmed. Keep access to the calendar within the company so it remains usable if the adviser changes.

When should I update the first-year timetable?

Review it regularly and whenever the company starts activity, hires staff, changes its year end or changes advisers. Check the actual company and tax records before adjusting dates, and keep separate rows for filing, payment and activity-triggered registrations.

Official sources

Sources checked: 8 September 2026. Check the linked guidance for subsequent changes.

  1. GOV.UK: Accounts and tax return deadlines
  2. GOV.UK: First company accounts and tax return
  3. HMRC: Trading and non-trading companies
  4. GOV.UK: Filing your company confirmation statement

General information only. The appropriate action depends on your circumstances and the applicable jurisdiction.

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