You may be using software to interact with HM Revenue and Customs (HMRC), for example to send your Self Assessment tax return.
You can use this service to:
- check which software you’ve given permission to
- remove permission from any software, for example permission to file your return
To sign in for the first time, you’ll need:
- a Government Gateway account - you’ll have one if you’ve used HMRC online services before
- a permanent National Insurance number