R&D is a Corporation Tax (CT) tax relief that may reduce your company’s tax bill if your company is liable for CT or, in some circumstances, you may receive a payable tax credit. This guidance is designed to help you make a claim for tax relief if you are an SME. The Research and Development Expenditure Credit (RDEC) scheme was introduced in the Finance Act 2013 — it enables companies with no CT liability to benefit through a cash payment or a reduction of tax or other duties due.