Key Penalty Changes from Budget 2025
Budget 2025 introduced reforms that affect Corporation Tax late filing penalties and the penalty regime for Self Assessment (SA) and VAT, particularly where Making Tax Digital (MTD) is involved. (gov.uk)
Corporation Tax Late Filing Penalties
For Corporation Tax returns due on or after 1 April 2026, penalties have roughly doubled in many cases:
- Late return: increased from £100 to £200
- More than 3 months late: from £200 to £400
- Three successive failures: from £500 to £1,000 (return late) or £1,000 to £2,000 (more than 3 months late) (gov.uk)
Self Assessment & VAT Penalty Reform
The reforms introduce a points-based system for late submissions under MTD for Income Tax. Key aspects:
- For the 2026-27 tax year, though quarterly updates are mandatory for those with income over £50,000, no penalty points will be issued for missing those updates. (gov.uk)
- If you’re mandated for MTD, the new penalty regime for late submission and late payment applies from when you join; those not yet mandated will transition from 6 April 2027. (gov.uk)
- From 6 April 2027, missing deadlines will accrue penalty points; after 4 points, you’ll incur a £200 fixed penalty, with additional financial penalties or interest for payment failures. (gov.uk)
Implications and Risks for Businesses & Individuals
- Increased financial exposure: Bigger penalties for companies missing Corporation Tax deadlines, especially for repeat failures.
- MTD compliance becomes critical: Moving to digital updates and submission means missing quarterly deadlines will now carry consequences in future years.
- Complexity in transition: For those not yet mandated or in early years of MTD, tracking when penalties or points apply will require careful attention.
Examples
- Example 1: A medium-sized company misses its Corporation Tax filing for a return due May 2026. Before, a £100 penalty; post-4/1/2026 it’s £200. If it's a third successive failure, the penalty could reach £1,000.
- Example 2: A sole trader with income over £50,000 omits to send a quarterly update due in August 2026. No penalty points this year, but must catch up to avoid points later.
How to Handle the Changes
- Use calendar tools and reminders for all filing dates, especially quarterly updates and SA deadlines.
- Engage an agent or accountant if unsure — especially for businesses moving into MTD or those used to the previous regime.
- Document everything: if you miss a deadline, having a “reasonable excuse” matters in appeals.
- Keep an eye on HMRC consultations, factsheets, and guidance updates — reforms are still evolving.
Conclusion
These reforms represent HMRC’s push toward modernisation, fairness, and better tax compliance. The stakes are higher: for companies with larger fines, and for individuals mandated into MTD with points-based penalties. Stay organised, stay informed — and don’t allow deadlines to slip.