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Registering a company

When is my Self Assessment Tax Return due?

Your return will cover the tax year, which runs from 6th April-5th April the following year.

You need to submit your return by midnight on:

  • 31st October if filing on paper
  • 31st January if filing online

The deadline for paying the tax you owe is midnight 31st January, and there is an additional payment deadline of 31st July if you have a Payment on Account.

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