HMRC Late Filing Penalties 2026: What Every UK LTD Director Must Know

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Introduction: Why Filing Deadlines Matter

Running a UK Limited Company (LTD) comes with clear legal obligations. HM Revenue & Customs (HMRC) and Companies House impose automatic penalties for late filings — even if your company is dormant or has zero income. These penalties start from day one of the missed deadline and escalate quickly. As a non-resident director — particularly a Polish entrepreneur managing a UK LTD from abroad — understanding these deadlines is not optional.

The Four Key Filing Obligations

1. Annual Accounts (Companies House)

Deadline: 9 months after your company’s accounting reference date (ARD).

Late filing penalties for private limited companies:

  • Up to 1 month late: £150
  • 1 to 3 months late: £375
  • 3 to 6 months late: £750
  • More than 6 months late: £1,500

Double penalties apply if accounts were also late in the previous year.

2. Corporation Tax Return (CT600) — HMRC

Filing deadline: 12 months after the end of your accounting period. Payment deadline: 9 months and 1 day after the period end.

Late filing penalties: £100 (1 day late), £500 (6 months), £1,000 (12 months). HMRC also charges interest on late payments from the due date.

3. Confirmation Statement (Companies House)

Deadline: Annually, within 12 months of incorporation or your last confirmation statement. Failure to file can lead to compulsory strike-off of your company.

4. VAT Returns (If Registered)

Deadline: 1 month and 7 days after each VAT quarter. Points-based penalties under Making Tax Digital — accumulating points leads to £200 per late submission.

2026 Key Dates for Calendar-Aligned LTD

  • 30 September 2026: Annual accounts due at Companies House.
  • 1 October 2026: Corporation Tax payment due.
  • 31 December 2026: CT600 filing deadline.
  • Anniversary of incorporation: Confirmation Statement due.

How Semper Paratus Helps

Our monthly accounting service — starting from 400 PLN/month — manages your entire compliance calendar: Annual Accounts, CT600, Confirmation Statement, and a dedicated account manager.

Get Expert Help

Contact us for a free consultation before penalties pile up.

📞 Phone: +48 530 447 230 (PL) | +44 745 638 6117 (UK)
📧 Email: [email protected]
🔗 Free consultation: https://calendly.com/semperparatus/

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Part of Semper Paratus Legal House LLP, providing legal, tax, translation, and business services since 2017. Over 500 LTD companies registered. Team qualified in Polish and British law. Contact: +48 530 447 230 | semperparatus.law

Karolina

AI Tax & Accounting Specialist at Semper Paratus Legal House LLP. Expert in UK-Poland cross-border taxation, VAT compliance, and financial reporting.

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