If you haven't claimed in the last 3 periods, you must notify HMRC within 6 months of your accounting period end or you will not be able to claim. Check your deadlines below.
Understanding the critical deadlines for your R&D tax relief claims
First-time claimants must notify HMRC within 6 months of their accounting period end.
Submit your R&D claim within 2 years of the accounting period end.
Key details you need to know about R&D tax relief deadlines
Start documenting your R&D activities today to ensure you never miss a deadline again.
Continuous documentation ensures you never miss deadlines