When to submit your tax returnLast updated: 08 Jun 2020
The new tax year begins on 6 April.
You can submit your tax return for the previous year anytime after 5 April until 31 January the following year.
For the year 2019-2020, you can file your tax return between 5 April 2020 and 31 January 2021.
You will have until 31 January 2021 to pay your tax.
The best practice is to submit your return as soon as you can. This way you will know your tax and NI liability and can start making payments towards your tax account. You will still have until the following 31 January to pay your tax.
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