Direct answer: The 2026 tax deadlines vary by country and tax type, but in many places the main filing deadline for individuals is around mid-April 2026 with extensions available to October in some systems. For the UK specifically (your location in London), the Self Assessment deadline typically falls on 31 January for online returns filing for the previous tax year, with payments due by 31 January and 31 July for balancing payments and payment on account deadlines. If you’re dealing with business taxes, GST/VAT, or different jurisdictions, deadlines can differ.
Key points to check now
- UK personal tax: If you’re in Self Assessment, the 2025/26 return would be due by 31 January 2027 (online return) but deadlines and rules can shift if there’s any extensions or changes to the regime. Confirming on HMRC’s site or with a tax professional is best. [cite ]
- UK payments: Balancing payment for the 2024/25 year would be due by 31 January 2026; 31 July 2026 is the payment on account deadline for the 2025/26 year if applicable. Verify your exact annual statements on HMRC. [cite ]
- If you have US, Indian, or other filings in parallel (e.g., for investments or employers abroad), deadlines and extension options differ by country; many jurisdictions offer automatic or request-based extensions similar to the US Form 4868 approach. [cite ][cite ]
What I can do next
- If you tell me which country and tax type you’re interested in (UK self assessment, VAT in the UK, US federal, etc.), I’ll pull the latest specific deadline dates and extension options and present them clearly with citations. [cite ][cite ][cite ]
Sources
The 2026 federal tax filing season, scheduled to open in late January and end on April 15, is one of the most anticipated in years. Tens of millions of taxpayers are expected to receive larger refunds due to the 2025 One Big Beautiful Bill Act (OBBB), which increased the standard deduction and the Child Tax … Continued
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