The most effective way to prevent HMRC enquiries is to know exactly what your claim must contain, which you can find out in the Corporate Intangibles Research and Development Manual. You need correct costs, accompanied by documentation, and a technical narrative that provides HMRC with all the information they need. If you’re using a tax software, it’s best practice to check these figures manually before submitting.
Relying on an R&D tax credit specialist such as ourselves to take leadership over your claim. This can prevent HMRC enquiries because they have a deep understanding of what is required in each claim, for each industry. From experience, they know common enquiries, and they’ll prevent these from arising.