Practical guide

Accounts filing deadlines

Use this guide to understand the standard Companies House filing windows for first and later annual accounts.

How the filing date is set

Annual accounts deadlines depend on the entity type and whether you are dealing with first accounts or a later recurring filing.

That is why the company type, incorporation timing, and accounting reference date all matter before the filing date is fixed.

Rule summary

Standard annual accounts filing windows

Private companies and LLPs normally file annual accounts 9 months after the accounting reference date. Public companies normally file within 6 months.

For first accounts, a longer incorporation-based route can matter where the first accounting period is longer than 12 months.

Worked examples

How the rule behaves in practice

  • Later private company accounts: A private company with a standard accounting reference date normally files later accounts 9 months after that date. The calculator returns the ordinary annual accounts deadline for a standard later filing.
  • First accounts with a longer opening period: A first accounting period can trigger the alternative incorporation-based deadline test. The tool compares the standard window against the longer first-accounts route where it is relevant.

Practical consequences

  • If the filing date is misunderstood, every later penalty or remediation decision will be built on the wrong foundation.
  • Keeping the accounts deadline visible early is one of the easiest ways to prevent a routine annual process from becoming a recovery problem.

Important limits

  • Shortened periods, extensions, or special filing situations are not covered.
  • The tool estimates the standard deadline only and does not validate whether the accounting reference date itself is correct.

Turn the result into an action plan

  • Use the calculator to pin down the working deadline.
  • Check the late filing penalty route if the date has already passed.
  • Keep the accounts date alongside confirmation statement and tax dates in the same working calendar.

Use the tool

Accounts Filing Deadline Calculator

Estimate the standard Companies House filing deadline for first or subsequent accounts using the company type and accounting dates.

FAQ

Why does the tool ask for the incorporation date?

It is needed for first accounts because the filing deadline can depend on the incorporation-based statutory deadline as well as the accounting reference date.

Related tools

Useful next checks

Companies House Late Filing Penalty Calculator It covers the same compliance topic from the next practical angle. Dormant Company Filing Deadline Calculator It covers the same compliance topic from the next practical angle. Micro-Entity Eligibility Checker It covers the same compliance topic from the next practical angle.

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