Running a UK business means juggling more tax deadlines than most owners realize. Miss one, and HMRC penalties follow fast. Here’s what you need on your calendar for 2026.
Key Deadlines to Track
- 31 January — Self Assessment tax return and balancing payment deadline.
- 1 April onwards — Corporation Tax due 9 months and 1 day after your company’s year-end.
- 5 April — End of the tax year. Last chance to use allowances and reliefs.
- Quarterly VAT returns — Due one month and 7 days after each VAT quarter ends.
- 19th/22nd of each month — PAYE and National Insurance payments to HMRC.
Why Businesses Miss Deadlines
Most missed deadlines aren’t about forgetting the date — they’re about disorganized records. If your bookkeeping is a month behind, your accountant can’t file on time either.
How to Stay Ahead
- Keep a rolling compliance calendar, not a mental one.
- Reconcile accounts monthly, not at year-end.
- Set payment reminders 2 weeks before each due date.
- Work with a bookkeeper who tracks deadlines for you.
Staying compliant isn’t about being perfect — it’s about having a system. NovTax manages these deadlines for clients year-round, so nothing slips through.
Book a Free Consultation to get your compliance calendar sorted. Contact Us.
