Is there a minimum amount you must spend to claim?
No. HMRC does not set a minimum level of qualifying R&D expenditure you must incur before you can claim R&D tax relief. If your project work qualifies and the costs you include are within HMRC’s qualifying categories, a claim can be valid even where the R&D spend is relatively small.
That said, “no minimum” does not mean “low scrutiny”. Smaller claims still need a clear technical rationale, clean cost workings and the right process steps for the accounting period you are claiming.
Why do some articles still mention a £10,000 threshold?
Because there used to be one.
Historically, there was a £10,000 minimum expenditure threshold, and HMRC also had an even older £25,000 threshold for very early years of the relief. However, HMRC’s published guidance on the reforms confirms that the £10,000 minimum expenditure was removed for accounting periods ending on or after 1 April 2012.
If you see the £10,000 figure online, it is usually referencing older rules or outdated guidance.
What matters now instead of a minimum spend
For modern claims (including the merged scheme and ERIS periods), the practical gatekeepers are not a minimum spend threshold. They are:
- Whether the work meets HMRC’s definition of R&D for tax purposes
- Whether the costs fall within HMRC’s listed categories and are allowable for tax
- Whether you have followed the required claim process (for example AIF, and claim notification where it applies)
There is no minimum spend, but you should be realistic about effort versus benefit.
If your claim is small, you still need to do the same fundamentals: define project boundaries, show uncertainty and advancement, and reconcile costs back to payroll and the ledger. If you cannot evidence it properly, the value of the claim is not worth the compliance risk.
Is there a minimum claim value HMRC will process?
No published minimum claim value. The requirement is that the claim is valid and supported. The previous minimum expenditure rule was removed for accounting periods ending on or after 1 April 2012.
Can we claim if we only spent a few thousand pounds on R&D?
Potentially yes, if the work qualifies and the expenditure is in HMRC’s qualifying categories. You still need a clear technical explanation and robust cost support.
Does ERIS have a minimum spend threshold?
Not a specific minimum spend threshold. ERIS eligibility is driven by the R&D intensity and loss making position, not a minimum qualifying spend.
Does the “no minimum spend” rule mean HMRC is less likely to enquire?
No. Whether HMRC opens a compliance check is risk based. A small claim can still be checked if the narrative, costs, or process steps do not stack up.
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