If you need to file a paper self-assessment tax return for the 2016/17 tax year, you only have until midnight on Tuesday 31st October to do so.

For those who choose to file their return online, you'll have until January 31st 2018.

What happens if you miss the deadline?

Paper tax returns received on or after November 1 will result in a £100 fine.

However, if you’re not able to submit a paper return by the end of the month, you can avoid a late-filing penalty by submitting your return online by midnight on January 31, 2018.

Filing online instead of by paper means you can get an automatic calculation, faster processing and a three-month extension on the paper tax return deadline.

Those that have previously filed using a paper tax return can usually switch to online returns by registering with HMRC.

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Who needs to file a tax return?

If you received a notification from HMRC in April or May this year saying you need to submit a self-assessment form, then you must do it.

You’ll probably need to file a self-assessment tax return if:

  • You’re self-employed
  • You’re a partner in a business partnership
  • You’re a company director
  • Your annual income is £100,000 or more
  • You get income from property
  • You or your partner receive Child Benefit and your income is over £50,000
  • You get income from trusts, settlements, or estates
  • You have Capital Gains Tax to pay
  • You need to claim expenses or reliefs
  • You’re a trustee
  • You get income from overseas
  • You’ve lived or worked abroad or don’t live in the UK permanently

Paying your tax

The deadline to pay any tax due regardless of whether you file a paper or online return for the 2016/17 financial year is January 31, 2018.

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Getting help

If you need help with your tax return, contact the self-assessment helpline on 0300 200 3310.

Lines are open 8am to 8pm Monday to Friday, but are least busy before 10am.