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Keeping your UK company compliant isn’t just about staying in business—it’s about avoiding costly penalties and maintaining your company’s reputation. One of the most common mistakes made by directors is missing key deadlines.
This article outlines the most important UK company filing dates you need to know, and how Dragonfly Associates helps clients stay ahead—subject to agreement.
Dragonfly Associates tracks your deadlines, sends alerts, and handles filings under our annual compliance packages.

Here’s a breakdown of the most common filing obligations for private limited companies in the UK:
| Filing Type | Deadline (After Event) | Notes |
|---|---|---|
| Confirmation Statement (CS01) | 14 days after confirmation date | Due annually, confirms company information |
| Annual Accounts (first year) | 21 months after incorporation | For new companies only |
| Annual Accounts (ongoing) | 9 months after accounting year-end | Applies from second year onward |
| Corporation Tax Return (CT600) | 12 months after accounting year-end | Filed with HMRC |
| Corporation Tax Payment | 9 months + 1 day after accounting year-end | Must be paid before CT600 is filed |
| PAYE / NI Payments (monthly) | 22nd of each month (if paying electronically) | For employers |
| VAT Returns (if registered) | Usually quarterly – 1 month + 7 days after VAT period | Depends on VAT scheme used |
| Companies House Event Changes | Within 14 days of change (e.g. director, address) | File appropriate form (e.g. CH01, AD01) |
Dragonfly Associates offers full annual compliance monitoring, filings, and documentation maintenance to eligible clients—subject to agreement.
We help prevent this through deadline tracking and proactive filing.
Yes. You can apply to shorten or extend your accounting period with Companies House. We can assist with the application.
Contact us immediately. We may be able to help file quickly and mitigate penalties or objections, depending on the situation.
Yes. We provide comprehensive annual filing support, including accounts, Confirmation Statements, tax returns, and more—subject to agreement.
Running a company involves more than great ideas—it requires staying compliant with UK filing obligations. By knowing your key dates and working with the right partners, you can stay ahead and avoid unnecessary risk.
Dragonfly Associates tracks your filing calendar, handles all required submissions, and provides ongoing advice through our compliance and accounting service plans.
To simplify your company’s compliance and never miss a deadline again, contact us today.
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