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Tax deadline dates

To avoid penalties it's important to make sure you meet all self-assessment and other tax deadlines that apply to you. Here we highlight some of the key tax deadlines of the financial year.

Self-assessment tax return deadlines

If you need to fill in a self-assessment tax return, for example if you are self employed, there are a number of deadlines you need to be aware of:

  • Paper submissions are due by 31 October following the end of the tax year in which you need to pay tax
  • Online tax returns are due by 31 January following the end of the tax year in which you need to pay tax.
  • The payment of tax deadline is the same for both paper and online tax return submissions: 31 January following the end of the tax year for which you need to pay tax.

If you fail to get your tax return in on time, you could be hit with an automatic £100 fine.

For more information, visit our guide to self-assessment tax returns.

Inheritance Tax deadlines

Inheritance Tax is charged on your estate (the sum total of all the assets you leave behind) once you pass away – if your estate is worth more than £325,000. For more information on Inheritance Tax, including ways to reduce your bill, visit our inheritance tax planning pages.

Inheritance tax needs to be paid six months after death and is calculated by the executor of the deceased's estate in a self-assessment form.

Lifetime transfers that take place between 6 April and 30 September must be declared by the 30 April the following year. Transfers that take place between 1 October and 5 April must be declared six months after transfer

The Financial Conduct Authority does not regulate taxation and trust advice

Last updated: 20 May 2015

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