Agent Dedicated Line: tax credits

Call HMRC about tax credits if you’re authorised to act as an agent or tax adviser for your client.

From:
HM Revenue & Customs
Published
14 May 2025

Phone

Call HMRC for help with tax credits if you’re formally authorised to act on behalf of a client.

Telephone: 0345 300 3943

Opening times: Monday to Friday, 8am to 6pm. Closed bank holidays.

Find out about call charges

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HMRC services for tax agents

Updates to this page

Published 14 May 2025