Where to find the login pages for HMRC's old and new agent services accounts. These links are to assist tax agents.
Login to HMRC's old main agent account
This is where you can sign in for things like your personal or business tax account, authorise clients, access services such as Self Assessment, Corporation Tax, PAYE for employers and old system VAT.
Landing page: https://www.gov.uk/log-in-register-hmrc-online-services
Login New Agent Services Account
Here you can move clients into Making Tax Digital fo VAT and Making Tax Digital for Self Assessment (there is a pilot running until 2026) and authorise clients for those services.