Check your UK company's filing deadlines
See your confirmation statement, annual accounts and corporation tax deadlines — free, with no signup, straight from live Companies House data.
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Understanding your UK company filing deadlines
Every UK limited company has three core statutory deadlines you need to stay on top of — and missing any of them can result in automatic fines, interest charges, or worse.
Confirmation statement — due every 12 months from the anniversary of your previous confirmation statement (or incorporation). This is your annual check-in with Companies House confirming your registered details: shareholders, directors, SIC codes, and share capital. You must file it even if nothing has changed. An overdue confirmation statement triggers reminder letters from Companies House and, if still not filed, can result in the company being struck off the register.
Annual accounts — due 9 months after your accounting reference date for a private limited company. These must be filed at Companies House. Late filing carries automatic penalties: £150 for up to one month late, £375 for one to three months, £750 for three to six months, and £1,500 for more than six months. Every penalty doubles if you are late two years running.
Corporation tax — payment is due 9 months and 1 day after the end of your accounting period (the HMRC CTM01800 rule). Your CT600 return must be filed within 12 months of your accounting period end. HMRC charges interest on late payments at the official rate and may open compliance enquiries for persistent late filing.
This tool reads live data from the Companies House API — your filing history, accounting reference date, and next due dates — and computes all three deadlines for you instantly. If you are VAT-registered or run payroll, use the HMRC section to add your VAT return and PAYE deadlines to the picture at no cost.
Want email and calendar reminders before each deadline, plus the ability to generate dividend vouchers, board minutes, and share certificates in seconds? That is what Tend is for. Built for UK limited company directors who would rather spend their time on the business, not the admin.
When is my confirmation statement due?
Your confirmation statement is due every 12 months from the date of your previous confirmation statement (or your incorporation date, for the first one). Companies House calculates and shows the next due date. You must file it even if nothing has changed — the filing fee is currently £34 online (£62 on paper). An overdue confirmation statement puts your company at risk of being struck off.
When are my annual accounts due?
For a private limited company, annual accounts are due 9 months after your accounting reference date (year-end). Your first set of accounts is due 21 months after incorporation. The due date is set by Companies House and shown in this tool. If your company is small (turnover below £10.2m, balance sheet below £5.1m, and fewer than 50 employees), you may be eligible to file abridged or micro-entity accounts.
What happens if I file late?
Late annual accounts carry automatic penalties applied by Companies House: £150 (up to 1 month late), £375 (1–3 months), £750 (3–6 months), and £1,500 (more than 6 months). All penalties double if you are late two years in a row. An overdue confirmation statement can lead to your company being struck off the register, which means it ceases to exist as a legal entity.
When is my corporation tax payment due?
Corporation tax is usually due 9 months and 1 day after the end of your accounting period (the HMRC CTM01800 rule). If your accounting period ends on the last day of a month, the payment is due on the 1st of the 10th month after. Your CT600 return must be filed within 12 months of the accounting period end. This tool computes both deadlines from your accounting reference date.
Is this deadline checker free?
Yes — completely free with no signup required. This tool reads live data directly from the Companies House API and computes your deadlines on the spot. Adding your HMRC deadlines (VAT and payroll) is also free. No credit card, no account, no catches.