UK Tax Year Deadlines
Self Assessment, corporation tax, and VAT filing dates from your year end or quarter.
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Linked tax year
2025/26
VAT scheme
| Deadline | Date | Category | Notes |
|---|---|---|---|
| VAT — quarter ending 30 June 2024 | 6 August 2024 | VAT | One month and seven days after the quarter end (standard quarterly rule). Indicative. |
| VAT — quarter ending 30 September 2024 | 6 November 2024 | VAT | One month and seven days after the quarter end (standard quarterly rule). Indicative. |
| VAT — quarter ending 31 December 2024 | 7 February 2025 | VAT | One month and seven days after the quarter end (standard quarterly rule). Indicative. |
| VAT — quarter ending 31 March 2025 | 7 May 2025 | VAT | One month and seven days after the quarter end (standard quarterly rule). Indicative. |
| Corporation tax — payment due | 1 January 2026 | Corporation tax | Nine months and one day after the accounting period end (standard rule). |
| Self Assessment — payment on account (31 Jan) | 31 January 2026 | Self Assessment | First payment on account for tax year 2025/26. Indicative — based on prior-year liability. |
| Corporation tax — CT600 filing | 31 March 2026 | Corporation tax | Twelve months after the accounting period end. Indicative filing deadline. |
| Self Assessment — payment on account (31 Jul) | 31 July 2026 | Self Assessment | Second payment on account for tax year 2025/26. |
| Self Assessment — balancing payment | 31 January 2027 | Self Assessment | Balancing payment for tax year 2025/26. Due with the online filing deadline. |
| Self Assessment — online filing deadline | 31 January 2027 | Self Assessment | Online filing deadline for tax year 2025/26 (paper filing would be earlier). Indicative. |
Indicative UK deadlines only. VAT stagger groups, HMRC extensions, and individual circumstances may change dates — confirm with HMRC or your adviser.