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CT600 glitch for RDEC claims

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HMRC has updated its corporation tax online service guidance to cover problems SME subcontractors are facing when claiming research and development expenditure credit (RDEC).

HMRC has acknowledged that some companies which are claiming RDEC as an SME subcontractor to a large company are unable to complete boxes 650 and 657 on the company tax return CT600. Taken together, those boxes signify that the additional information requirement in relation to the R&D claim has been met.

Where this problem arises, HMRC advises that those boxes should be left empty but the additional information form must still be submitted to make sure that the RDEC claim is valid. HMRC aims to update the online service to resolve this problem in April 2025.

Issue: 1639
Categories: News
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