Not wishing to blow the candles out on the fun we have put together a Festive timetable for tax advisers and accountants:
| Deadline | Task | Notes | |
| Before the holidays | Run payrolls | Have you have discussed PAYE implications of:
with employers and owner-managers? |
|
| 25-26 Dec | Minimum period for accountants to take a break! | Memo to self: take that break | |
| 30 Dec | Self-assessment deadline to code out 2020-21 tax liabilities via PAYE. | ||
| 31 Dec | Filing deadline for 31 March year-end companies with Companies House. | Caution: Companies House does not always send reminders | |
| 31 Dec | CT600 filing deadline for 31 December year-end companies. | ||
| 1 Jan | Corporation Tax due for 31 March year ends | ||
| 6 Jan | Corporation Tax due for corporate non-resident landlords with actual or deemed 5 April year ends. | ||
| 7 Jan | November quarter VAT returns due (online) | Ensure that you pay by 7 Jan too | |
| 14 Jan | CT61 deadline for 31 December quarter-end | ||
| 19 Jan | PAYE/CIS monthly returns and payments | If you are paying electronically add 3 days | |
| 30 Jan | Non-resident landlord scheme payment for 31 December quarter-end | ||
| 31 Jan | Self-assessment deadline | £100 penalty irrespective of whether any tax is due | |
| 31 Jan |
Self-assessment:
|
||
| 31 Jan | Self-assessment 2019-20 amendment window closes | ||
| 31 Jan | CT600 filing deadline for 31 January year-end companies | ||
| 31 Jan | Notify of liability to Class 2 National Insurance if self-employment commenced in 2020-21 |
Tax penalties: all taxes
A penalty will apply where there is a loss of tax attributable to a careless error or mistake (including an overclaim) made in preparing a tax return or document.
Late filing penalties: Self Assessment
Miss the 31 January deadline and the penalty is £100 unless your outstanding tax for the year (this does not include the payment on account) is paid on time, then it is reduced to nil.
See Tax penalties: Self Assessment