Key Tax Deadlines - December 2025 and January 2026
02 Dec, 2025
Key Tax Deadlines - January & February 2026
02 Jan, 20261 minuteA number of important tax deadlines are coming up in January and February that you may need ...
A number of important tax deadlines are coming up in January and February that you may need to be aware of to avoid incurring any penalties.
Have a look at our ‘dates for your diary’ below to see which dates may apply to you:
Date | What's Due |
01/01 | Corporation tax payment for the year to 31/03/2025 (unless quarterly instalments apply) |
19/01 | PAYE & NIC deductions, and CIS return and tax, for the month to 05/01/2026 (due 22/01/2026 if you pay electronically) |
31/01 | Deadline for filing 2024/25 self-assessment tax return online and paying your outstanding tax for 2024/25 and first payment on account of 2025/26 tax |
01/02 | Corporation Tax payment for the year to 30/04/2025 (unless quarterly instalments apply) |
19/02 | PAYE & NIC deductions, and CIS return and tax, for the month to 05/02/2026 (due 22/02/2026 if you pay electronically) |
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