| Date | What’s Due |
| 1 June | Corporation Tax for year to 31/08/2025, unless quarterly instalments apply |
| 19 June | PAYE & NIC deductions, and CIS return and tax, for month to 05/06/2026 (due 22 June if you pay electronically) |
| 1 July | Corporation Tax for year to 30/09/2025, unless quarterly instalments apply |
| 5 July | Deadline to agree PAYE settlement agreements for 2025/26 |
| 6 July | P11D, P11D(b) and Employment Related Securities returns due for 2025/26 |
| 19 July | PAYE & NIC deductions, and CIS return and tax, for month to 05/07/2026 (due 22 July if you pay electronically) |
| 31 July | Due date for the second self-assessment payment on account for 2025/26 (if applicable) |
not all accountants are grey...
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