Staying on top of your Making Tax Digital (MTD) deadlines is vital for avoiding HMRC penalties and keeping your business fully compliant with the UK’s digital tax rules. Whether you’re filing VAT returns, submitting quarterly income tax updates, or preparing for future Corporation Tax requirements, knowing when to file is just as important as how to file.
This guide breaks down the key MTD deadlines for 2025 and beyond, organised by tax type, so you always know what’s due and when.
MTD for VAT: Deadlines
If you’re VAT-registered, MTD for VAT applies to you, and your digital VAT returns must be submitted on time via compatible software.
If you’re VAT-registered, MTD for VAT applies to you. You must submit your digital VAT returns on time through MTD-compatible software — late filing or payment can lead to penalties and interest charges.
When are MTD VAT returns due?
- Filing deadline: One month and seven days after the end of your VAT period.
- Payment deadline: Same as your filing deadline — one month and seven days after the VAT period ends.
Example:
If your VAT quarter ends on 31 March, your MTD VAT return and payment are both due by 7 May.
| VAT Quarter Ends | Filing & Payment Deadline |
| 31 March | 7 May |
| 30 June | 7 August |
| 30 September | 7 November |
| 31 December | 7 February (following year) |
If you file monthly or annual VAT returns, the same rule applies your deadline is always one month and seven days after the end of your VAT period.
MTD for Income Tax (ITSA): Deadlines
Making Tax Digital for Income Tax Self-Assessment (MTD for ITSA) is due to start in April 2026, beginning with self-employed individuals and landlords with annual income over £50,000.
Under MTD for ITSA, you’ll have new deadlines to meet throughout the year:
- Quarterly updates: Submitted every three months to HMRC using MTD-compatible software.
- End of Period Statement (EOPS): Submitted after your accounting year ends to finalise income and claim any reliefs.
- Final Declaration: This replaces the traditional Self-Assessment tax return and must be submitted by 31 January following the end of the tax year.
Quarterly Update Schedule (from 2026):
| Quarter | Period Covered | Submission Deadline |
| Q1 | 6 April – 5 July | 5 August |
| Q2 | 6 July – 5 October | 5 November |
| Q3 | 6 October – 5 January | 5 February |
| Q4 | 6 January – 5 April | 5 May |
Your final declaration and any balancing tax payment remain due by 31 January after the end of the tax year, just like the current Self-Assessment deadline.
MTD for Corporation Tax: What Happened to the Timeline?
Making Tax Digital for Corporation Tax (MTD for CT) was originally planned for rollout no earlier than April 2026, following consultations and pilot schemes. However, the UK government has since confirmed that MTD for CT will not be introduced.
Here’s how the timeline developed before the decision was made:
| Year | Event |
| 2021 | HMRC completed its consultation on MTD for Corporation Tax |
| 2024 | Pilot scheme tested digital submissions with volunteer companies |
| 2025 | Government confirmed MTD for Corporation Tax will not go ahead |
Key point: Companies will continue filing Corporation Tax returns through the current CT600 system. While MTD for CT is off the table, moving to digital record-keeping and accounting software is still strongly recommended to improve accuracy, save time, and prepare for any future HMRC updates.