HMRC: Agent Dedicated Line update

11 April 2023

HM Revenue and Customs (HMRC) has informed that the Agent Dedicated Line (ADL) will only answer calls relating to self-assessment late filling penalties and appeals and PAYE coding enquiries, between 17 April 2023 and 2 June 2023.

For all other enquiries HMRC’s online services or the main helplines will need to be used and the ADL will not respond to any progress chasing calls. This is a temporary change to facilitate agents needing exclusive support at the start of the tax year.

If you act as an agent and have non-self-assessment queries, HMRC suggests the below methods instead of contacting the ADL:


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