R&D tax relief deadline tracker
Keep your R&D claims on track
Knowing when to file your R&D tax claim can be confusing. This tool works it out for you in seconds, so you always know exactly what’s due and when.
If you’re claiming R&D tax relief, there are several deadlines that determine whether you can make a claim. Missing one could mean losing out on relief your business may be entitled to.
Calculate your personalised R&D deadline schedule
Just enter your company’s year-end month and year below to see every key milestone, from filing your accounts to your final R&D claim submission window.
Never miss your R&D claim deadline
Never miss another deadline. Choose to receive reminders straight to your inbox before each key date.
How we calculate your deadlines
Each year, eligible businesses lose out on R&D relief because they submit too late. Once the window closes, HMRC won’t reopen it — even if your company qualified.
Staying on top of your R&D tax deadlines protects your cash flow and ensures you get the full benefit of the relief available.
6 months after period end
9 months after period end
12 months after period end
2 years after period end
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