Start with the essentials
R&D meaning: what counts as R&D for tax relief
What R&D means for UK Corporation Tax relief, how the government defines it, what is left out and how it differs from everyday use.

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The R & D Knowledge Hub
Practical guides to what counts as R & D, how tax relief works and what goes into a claim.
Explore the 9 guidesStart with the essentials
What R&D means for UK Corporation Tax relief, how the government defines it, what is left out and how it differs from everyday use.

When software development counts as R&D, which companies can claim, where software R&D starts and stops, which costs may count and the form used.
What engineering work may qualify for R&D tax credits: who can claim, what a project must show, client contract work and typical costs.
How the UK tax definition of R&D applies to construction: the advance test, design work, improvements, and where R&D starts and stops.
How the merged R&D scheme and enhanced R&D intensive support are calculated, which costs count and why the credit is taxable.
What the R&D expenditure credit scheme is, who can claim it, how it differs from a grant and from enhanced R&D intensive support.
The claim deadline for R&D tax relief, how the notification rules limit late claims and how far back HMRC can look.
How a UK company applies for R&D tax credits: who can claim, how grants fit in, the claim notification form and the Company Tax Return.
How R&D tax accountants test a company and its projects against the relief rules, the evidence they collect and which paid costs fit a claim.
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