Self assessment taxpayers who want to return their form by post only have a few days to avoid a 100 fine.

The deadline to send paper returns by post for the 2011/12 financial year is 31 October just over a week away.

You'll pay the fine if your postal form is just a day late, even if you don't owe any tax.

If you're at risk of being late, the easy way to avoid coughing up 100 is to file online instead, though you have to register first to do this. Here, you have until 31 January 2013.

Who needs to file a return?

If you've been sent a notification you need to submit a self-assessment form.

This mainly applies to the self-employed, company directors and anyone with savings or investment income of 10,000 or more, even if they also have tax deducted by an employer.

You needed to have told HMRC by 5 October that you must file a self assessment form for the last financial year.

If you're unsure whether you need to complete a form, or to register, check the HMRC website.

No matter how you submit your form, the deadline for paying tax you owe from the 2011/12 tax year is 31 January 2013.

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