What is tax deductible? Learn which UK business expenses you can claim, what HMRC disallows and how allowable expenses can reduce your taxable profit.

R&D tax credits allow UK limited companies to reduce Corporation Tax or receive a cash repayment for developing new or improved products, software or processes where scientific or technological uncertainty existed. Claims must now follow strict HMRC compliance rules, including advance notification, a detailed technical narrative, an Additional Information Form and correct reporting on the CT600 tax return.