Filing Deadlines for Companies in the UK: A Comedy of Errors
Introduction: The Art of Filing, or How to Avoid Financial Doom
Filing deadlines for companies in the UK are a bit like birthdays. They come around every year, and if you forget them, you end up in trouble. Unlike birthdays, however, Companies House doesn’t accept belated excuses like, “Oh, I thought it was next week!” or “I was planning a surprise!”
So, dear business owners, accountants, and procrastinators, gather around as we embark on a (somewhat) entertaining journey through the world of UK filing deadlines. By the end of this, you might actually remember a few key dates—or at least learn how to set up calendar reminders properly!
Annual Accounts: Your Company’s Report Card

Ah, annual accounts. The financial equivalent of a school report. If your company is trading, sleeping, or just exists in name only, you have to file them. Companies House is a bit like a strict headteacher—fail to hand in your homework, and you’ll get detention (in the form of fines).
The Deadline That Haunts You
For most companies, the deadline to file annual accounts is:
- Private limited companies (Ltds): 9 months after the end of the financial year.
- Public limited companies (PLCs): 6 months after the end of the financial year.
Sounds simple, right? But just like that dentist appointment you’ve been meaning to book, it sneaks up on you.
Late Filing Penalties: Because Time Is Money
If you miss the deadline, Companies House starts dishing out fines faster than you can say “accounting software subscription.” The penalties are as follows:
- Up to 1 month late: £150 for private companies, £750 for public companies.
- 1 to 3 months late: £375 (private) / £1,500 (public).
- 3 to 6 months late: £750 (private) / £3,000 (public).
- More than 6 months late: £1,500 (private) / £7,500 (public).
And if you think ignoring it will make it go away, Companies House might just strike your company off the register. Poof! Gone! Like that gym membership you forgot to cancel.
Confirmation Statement: The “Everything Is Fine” Form
The confirmation statement is a simple document that basically tells Companies House that nothing has dramatically changed. Think of it as a text message to your mother just to say, “Yes, I’m alive.”
The All-Important Due Date
You must file a confirmation statement at least once a year. The deadline is 14 days after the end of your review period.
What’s a review period? It’s just a fancy term for “the 12 months since your last confirmation statement.”
The Price of Forgetting
If you forget to file this statement, Companies House won’t fine you directly, but they can start proceedings to dissolve your company. So if you don’t want your business disappearing faster than your motivation to eat healthily, get that statement in on time!
Corporation Tax Return: The One That Hurts the Most
If annual accounts are a school report and a confirmation statement is a wellness check, the corporation tax return is the invoice for attending school at all. HMRC (His Majesty’s Revenue and Customs) wants its share of your profits, and it will find a way to collect.
When Is It Due?
The corporation tax return deadline is:
- 12 months after the end of your company’s accounting period.
However, tax itself is due 9 months and 1 day after the end of the accounting period. Yes, that’s right—your tax bill is due before the return. Because why make things easy?
The Price of Ignorance
Missing this deadline means HMRC will send you a £100 fine. Still ignoring them? They’ll add another £100. Wait even longer, and penalties will escalate, potentially reaching thousands of pounds.
Ignoring HMRC is like ignoring a wasp in your car. It will not go away—it will only become more aggressive.
PAYE and VAT: Monthly and Quarterly Surprises
For companies that employ people (even if the only employee is you), there are more deadlines lurking in the shadows.
PAYE: Paying Employees (and the Taxman)
If you run payroll, you have to submit PAYE (Pay As You Earn) information to HMRC. The key deadlines are:
- RTI (Real Time Information) submission: Every time you pay employees.
- PAYE payments: Usually due by the 22nd of the month (or 19th if paying by cheque—though who even does that anymore?).
VAT: The Gift That Keeps on Taking
If your company is VAT registered, you’ll need to submit VAT returns and payments, typically every quarter. The deadline is usually 1 month and 7 days after the VAT period ends.
HMRC does not take kindly to VAT lateness. Expect penalties, interest, and possibly even a stern letter written in bureaucratic English (the scariest kind of English).
How to Stay on Top of Deadlines (Without Losing Your Mind)
Deadlines can feel overwhelming, especially if you’re juggling running a business, remembering birthdays, and occasionally feeding yourself. Here are some simple survival tips:
1. Automate Everything
- Use accounting software that reminds you about deadlines.
- Set up direct debits for VAT and PAYE.
2. Set Multiple Reminders
- Check the Companies House dates using their register search at https://find-and-update.company-information.service.gov.uk/
- Don’t just rely on one calendar notification—set three.
- Tell your dog about the deadline. At least one of you might remember it.
3. Hire an Accountant
- A good accountant is worth their weight in gold (or at least in saved penalties).
- If you can’t afford one, at least get a friend who enjoys spreadsheets.
4. Do It Early
- Future-you will thank past-you for filing on time.
- Treat it like pulling off a plaster—quick and relatively painless.
Conclusion: The Moral of the Story
Filing deadlines in the UK may not be the most thrilling part of running a business, but they are crucial. Missing them leads to fines, stress, and the risk of your company being struck off (or worse—having to explain to an angry HMRC officer why you “forgot”).
So, mark your calendars, set reminders, and maybe—just maybe—filing on time won’t feel like such a Herculean task. Or at the very least, it’ll be one less thing to panic about at 11:59 pm on deadline day!