The R&D tax relief most manufacturers never claim

Ask a machine shop owner whether they do research and development and the answer is almost always no. They picture laboratories and white coats. Then you ask what they did when a customer brought them a part nobody could hold to tolerance, and you get twenty minutes on tooling, fixturing, three scrapped batches and a process that eventually worked.

That second conversation is the one HMRC is interested in.

What actually qualifies

R&D for tax purposes means a project seeking an advance in science or technology, achieved by resolving scientific or technological uncertainty. Strip the language back and it means two things had to be true. You were trying to do something that represented a genuine step forward in your field, not just for your business. And at the outset, a competent professional in that field could not have told you how to do it.

In manufacturing that regularly covers developing a process to work a material you hadn’t used before, designing tooling where the approach wasn’t established, automating a line where integration was genuinely uncertain, and improving cycle time or yield where the route to get there wasn’t obvious.

What doesn’t

This is where I part company with a lot of the claims industry. Cosmetic changes don’t qualify. Applying existing techniques competently doesn’t qualify, however skilled the work. And a trial run where there was no real uncertainty - where you were validating a process you already knew would work - doesn’t qualify either, even though it feels like development.

The test isn’t whether it was hard. It’s whether the outcome was genuinely uncertain to someone who knows what they are doing.

The bit that costs people money

Materials are a common trap. If you consume materials in genuine R&D, that expenditure can qualify. If those same materials end up in a part you sell to a customer, that portion doesn’t. Get the split wrong and you have a claim that doesn’t survive scrutiny.

Why I say no more often than you’d expect

You will have been called by agencies offering to find you a claim on a percentage. Some are good. Many will submit anything and take their cut, and HMRC has been steadily increasing its scrutiny of exactly that behaviour.

An enquiry into an aggressive claim costs you time, money and considerable stress, and the agency is long gone. I would rather tell you there is no claim than build you one that falls over in two years.

If you think there might be something in this, the useful first step is a conversation about what you actually did and why it was uncertain - not a form.