Your company’s financial year has ended, or is about to. Three things follow from it: accounts for Companies House, a tax return and payment for HMRC, and, on its own timetable, the confirmation statement. Each has a different deadline, so it helps to see them side by side.
Your year end
Your company’s year end is its accounting reference date, set by Companies House when the company was formed. Your first accounts run from the day the company was set up to that date, so they often cover more than 12 months.
For Corporation Tax, a period can’t be longer than 12 months. If your first accounts cover more, you’ll file two Company Tax Returns for them.
What’s due, and when
For a private limited company:
| What | Who to | Deadline |
|---|---|---|
| Corporation Tax payment | HMRC | 9 months and 1 day after the end of the accounting period |
| Annual accounts | Companies House | 9 months after the year end |
| First accounts | Companies House | 21 months after the company was registered |
| Company Tax Return (CT600) | HMRC | 12 months after the end of the accounting period |
Notice that the tax is due before the tax return. It makes sense to finish the accounts and return early, so you know the figure before you pay it.
Corporation Tax rates
| Company profit | Rate |
|---|---|
| £50,000 or less | 19% |
| £50,000 to £250,000 | Between 19% and 25%, using Marginal Relief |
| Over £250,000 | 25% |
Marginal Relief means a company in this band pays somewhere between the two rates. The limits are shared between associated companies and cut for a short accounting period.
Penalties for late accounts
Companies House charges a penalty for late accounts, based on how late they are:
| How late | Penalty |
|---|---|
| Up to 1 month | £150 |
| 1 to 3 months | £375 |
| 3 to 6 months | £750 |
| More than 6 months | £1,500 |
The penalty doubles if your accounts are late two years in a row. You can apply for more time, but you must do it before the deadline and have a good reason.
Penalties for a late tax return
HMRC charges £200 the day after the return is due, and another £200 at 3 months. At 6 months HMRC estimates your tax and adds 10% of what’s unpaid, with another 10% at 12 months.
If your return is late three times in a row, each £200 penalty becomes £1,000. Interest runs on late tax too.
The confirmation statement
Every company, including dormant ones, must file a confirmation statement at least once every 12 months. It confirms the details Companies House holds, such as your officers, shareholders and registered office. It’s due within 14 days of the end of your review period, which runs for 12 months from incorporation or from your last statement.
Each director, and each person with significant control, needs a Companies House personal code before the statement can be filed. If you don’t file it, the company can be fined up to £5,000 and may be struck off.
Records
Keep the company’s accounting records for 6 years from the end of the financial year they relate to, and longer in some cases, for example if HMRC opens a compliance check.
What you need to do
- Find your accounting reference date on the Companies House register.
- Send your bookkeeping, bank statements and year-end figures to whoever prepares your accounts.
- Plan the Corporation Tax payment for 9 months and 1 day after the year end.
- File accounts and the tax return together if you can, well before the deadlines.
- Make sure every director, and anyone with significant control, has a Companies House personal code.
- Check the date your next confirmation statement is due.
Key dates
- 9 months and 1 day after the year end: Corporation Tax payment.
- 9 months after the year end: accounts to Companies House.
- 12 months after the year end: Company Tax Return to HMRC.
- 14 days after your review period ends: confirmation statement.
For a reminder of what’s coming up, see our tax calendar.
Official sources
Checked 5 October 2026
- GOV.UK: Prepare and file annual accounts for a limited company (opens in a new tab)GOV.UK
- GOV.UK: Your limited company's first accounts and Company Tax Return (opens in a new tab)GOV.UK
- Companies House: Penalties for late filing of accounts (opens in a new tab)GOV.UK
- HMRC: Company Tax Returns: penalties for late filing (opens in a new tab)GOV.UK
- HMRC: Corporation Tax rates and reliefs (opens in a new tab)GOV.UK
- Companies House: Filing your company's confirmation statement (opens in a new tab)GOV.UK
- GOV.UK: Company and accounting records (opens in a new tab)GOV.UK