| Self Assessment | 5 October | Deadline to register for Self Assessment after the tax year in which you first need to file |
| 31 October | Paper tax return |
| 31 January | Online tax return, any balance of tax owed and, where payments on account apply, the first payment on account for the following year |
| 31 July | Second payment on account |
| Making Tax Digital for Income Tax | 7 August, 7 November, 7 February, 7 May | Quarterly updates |
| VAT | 1 month and 7 days after the end of each VAT period | VAT return and payment (different dates apply under the Annual Accounting Scheme and for payments on account) |
| Limited companies | 9 months after the year end | Annual accounts filed at Companies House (private companies; a first set of accounts is due 21 months after incorporation) |
| 9 months and 1 day after the accounting period ends | Corporation Tax payment, for companies with taxable profits of up to £1.5 million |
| 12 months after the accounting period ends | Company Tax Return |
| Within 14 days of the review period ending | Confirmation statement, at least once a year |
| Payroll | On or before each payday | Full Payment Submission to HMRC |
| By the 22nd of the next tax month | PAYE and National Insurance paid electronically to HMRC (19th if paying by cheque through the post). Tax months run from the 6th to the 5th. Small employers may be able to pay quarterly |
| 31 May | P60s given to employees |
| 6 July | P11D and P11D(b) forms for expenses and benefits. Class 1A National Insurance is then due by 22 July (19 July by cheque) |