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ERROR: Cannot connect to HMRC

Resolve an HMRC agent authorisation error when connecting a client for MTD for Income Tax in AccountsPrep.

Written by Oliver Cook

You may see Cannot Connect to HMRC, Something went wrong, or a 403 agent authorisation error.

This can happen if your practice hasn't completed the required HMRC agent authentication.

  1. Sign in to your HMRC Agent Services Account and check that it's active.

  2. Complete MTD practice authentication if required.

  3. Return to AccountsPrep.

  4. Go to Settings, then Income Tax.

  5. Enable MTD.

  6. Try connecting the client again.

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