| PAYE Pay As You Earn) | |
| 19 May | P35 due |
| 31 May | Issue P60s to employees* |
| 6 July | P11Ds |
| 19 July | Payment due on Class 1A NICs |
| *Only relevant to employers | |
| Self Assessment Returns | |
| 6 April | Issued by the Inland Revenue |
| 30 September | Inland Revenue will calculate tax liability if SA Return has been received by now |
| 31 January | Latest date for submission |
| Payments of Income Tax / Class 4 NICs | |
| 31 January | Balancing payment and 1st payment on account |
| 31 July | 2nd payment on account |
| Surcharges (on amounts outstanding) | |
| 28 February | 5% on unpaid at that date |
| 31 July | Further 5% on amount unpaid at that date |
| Penalties for late Self-Assessment Returns | |
| Usually £100, or the amount of the liability if less | |
| 31 January | Where returns are outstanding at that date |
| 31 July | Further penalty if still outstanding |