| Date | What’s Due |
| 01/06 | Corporation tax for year to 31/8/20 (unless pay quarterly) |
| 19/06 | PAYE & NIC deductions, and CIS return and tax, for month to 5/6/21 (due 22/06 if you pay electronically) |
| 01/07 | Corporation tax for year to 30/9/20 (unless pay quarterly) |
| 05/07 | Last date for agreeing PAYE settlement agreements for 2020/21 employee benefits |
| 05/07 | Deadline for agents and tenants to submit returns of rent paid to non-resident landlords and tax deducted for 2020/21 |
| 06/07 | Deadline for forms P11D and P11D(b) for 2020/21 tax year. Also, deadline for notifying HMRC of shares and options awarded to employees. |
| 19/07 | PAYE & NIC deductions, and CIS return and tax, for month to 5/7/21 (due 22/07 if you pay electronically) |
| 31/07 | 50% payment on account of 2021/22 tax liability due. |