All about R&D Tax Credits

Are you looking to file R&D Tax Credits? This is the most useful page you'll find online to help you learn all you need.

This collection of clear, readable blog posts will take you through everything from the basics to the more advanced topics.

Overview and qualification

Read these brief articles to get a good high-level idea of what R&D Tax Credits are about, and whether you qualify.

How to claim

After you read these articles, you should be able to handle filing tax credits yourself in most cases.

How to write your technical narrative

This is the only place on the web where you'll find detailed instructions with examples about how to prepare this tricky part of a claim.

  • How to nail the technical narrative before you even start writing - Like any such complex activity, there are things you can do before you even get started that will set you on the right course, or not. In this article: getting the right data.
  • How do I organise the technical narrative? - If you speak to a specialist like us, they'll often talk about something called a "project". This is the basic organising unit of a claim, but its definition is quite flexible. Read more here.
  • How do I collect the data I need? - The person who did the R&D is often not the right one to write the technical narrative. But you need to get data out of them. This article explains how to get that data and gives a full example of what the raw data might look like.
  • How do I write the technical narrative? - The final piece of the puzzle! In this article, you will find a clear guide to how to go about writing this document, as well as a full example of what the end product looks like.

Specialist topics

If you have anything "special" going on, as most larger businesses will, I would strongly recommend using a specialist. However, if you still feel like doing it all yourself, here are some useful bits of advice.

Accountancy topics

These are also specialty topics, but they are more concerned with accountancy concepts than with tax credits.


From the horse's mouth. If you're a horse whisperer, this might be useful!...

Need help with R&D Tax Credits?

Whilst it is certainly possible to file Tax Credits yourself, sometimes getting some specialist help can be a lifesaver, in terms of time saved, greater security, and maximised claim amounts.

If your claim is substantial (spending more than £70k/year or so on R&D), the claim is typically subject to more thorough scrutiny, so it is a good idea to use a specialist like GrantTree to file it.

We work closely with your finance and development leads to ensure you maximise your claim’s potential:

  • We will scrutinise your financials and work closely with your financial team to ensure all qualifying costs are included whilst keeping the amount of time you spend interacting with the claim to a minimum - after all, we know you have a business to run!

  • Our industry expert writers will build a rock solid technical narrative to explain why your project is R&D qualifying, all in accordance with HMRC specification.

  • Any questions and queries coming from HMRC after filing the claim are handled by GrantTree and we will be there to provide assistance and defence should HMRC enquire into the deeper aspects of your R&D.

We help innovative companies find and obtain government funding so their ideas can grow.

GrantTree’s service was fast and responsive. They identified costs that we missed and increased our claim size. We’re happy customers and recommend working with them."

Justin Fitzpatrick, COO at Duedil

"We spoke to a couple of other companies, both of whom expected us to write at least an initial draft of the technical claim. GrantTree sent us a short form which took our technical lead half an hour to complete and their writers did the rest. This meant we didn’t lose time working on our product."

Maria Campbell, GoCardless

"GrantTree has been a joy to work with! They really care about our product and what we do. Would highly recommend them to other startups!”

Rebecca Sweetman, Kano Computing

“There is no other support company I know who is more in the ‘now’ of R&D Tax credits and grant funding. They’re open and transparent in their ‘doing’; supremely innovative in their own right. It's amazing to feel the energy that they give and the results achieved for a client.”

Sam Duong, Ming Foods

Find out how we can help you!

You can also get in touch either by email, or by calling us on 0207 7488 999.

Learn more about Tax Credits every week!

Sign up for our weekly(ish), informative, useful mailing list, and be on the bleeding edge for UK Government Funding information.

Our prices


Typical success fee is 20%

Length Success Fee
3 claim years 25%
5 claim years 20%
10 claim years 15%
Rolling contracts available.

UK Government Funding Faqs

Want to know more about UK Government funding? We have written and compiled this list of practical, useful articles, covering most aspects of the key topics that we are experts in: R&D Tax Credits, TSB Smart Grants, SEIS - and don't forget our page on startup funding in the UK.

Ready for a conversation with us?

Google Analytics Alternative