What is a Government Gateway user ID? Learn how to find or recover yours, sign in to HMRC and understand the switch to GOV.UK One Login.

Access your HMRC Personal Tax Account. Learn how to sign in, register with GOV.UK One Login, check tax codes, claim refunds and manage Self Assessment.

What is GOV.UK One Login? Learn how to create and use it, how it differs from Government Gateway, and what it means for HMRC and Companies House.