HMRC Agent Dedicated Line

How long is the hold on the HMRC Agent Dedicated Line?

Typical hold times are 10 to 45 minutes. Our most recent verified live call held for 39 minutes before an adviser answered.

39 min
Latest verified hold (Agent Dedicated Line)
10-45
Typical hold range, in minutes
8am-6pm
Mon-Fri, UK time. Closed weekends and bank holidays.

What is the HMRC Agent Dedicated Line?

The Agent Dedicated Line (ADL) is a separate HMRC telephone service reserved exclusively for registered tax agents and accountants. The number is 0300 200 3311. It handles Self Assessment and PAYE queries for agents acting on behalf of their clients.

The ADL is distinct from the public Self Assessment helpline (0300 200 3310), which is available to taxpayers calling about their own affairs. The public line typically has longer queues; HMRC advises agents never to use it for client matters, and an agent calling the public line may not receive the same level of service.

These times are based on 47 verified calls made to the HMRC Agent Dedicated Line between January and July 2026. Individual results vary; HMRC queue lengths are not published in real time.

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