Sending your first tax return online

If you’re using CalCal and this is the first time you’re sending your tax return online, there are a few steps you need to follow.

You can sign up with CalCal and start filling out your tax return in the meantime, but before you can submit, you need to:

  • Register:
    Visit the HMRC website to “register and file your self-assessment tax return”
  • Get your UTR number:
    You’ll set up a user ID and password, and then you’ll be sent your 10-digit Unique Taxpayer Reference (UTR) number in the post if you don’t already have one.
  • Get your activation code:
    This will also be sent by post, and will allow you to file online. The code can take up to seven days to arrive, so you need to make sure you register well in advance of the 31st January deadline.
  • Activate your account:
    Activate your online HRMC account within 28 days. Otherwise, the code will expire and you’ll need to request another one.

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