| Date | What’s Due |
| 1 March | Corporation Tax for year to 31/05/2025, unless quarterly instalments apply |
| 19 March | PAYE & NIC deductions, and CIS return and tax, for month to 05/03/2026 (due 22 March if you pay electronically) |
| 1 April | Corporation Tax for year to 30/06/2025, unless quarterly instalments apply |
| 1 April | National Minimum Wage rate increases take effect. |
| 5 April | End of the 2025/26 tax year – many tax planning actions need to have been taken by this date, including making use of 2025/26 allowances). |
| 6 April | Start of the 2026/27 tax year. Updated tax rates, thresholds and statutory payment rates take effect. |
| 6 April | Commencement of the Making Tax Digital for income tax regime. |
| 19 April | PAYE & NIC deductions, and CIS return and tax, for month to 05/04/2026 (due 22 April if you pay electronically) |
| 30 April | Annual Tax on Enveloped Dwellings (ATED) returns and payment for the chargeable period starting on 1 April 2026. |
not all accountants are grey...
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