Very dangerous advice "not to bother"!!!
If you reread my post you'll see that I say: I wouldn't bother. Never said: "not to bother".
But I'll make it clear why I said
I wouldn't bother: most people reading this thread will be spending more than they will ever make back - not exactly a definition of a self employed person - more a bankrupt person.
The horses mouth: read:
http://www.hmrc.gov.uk/manuals/salfmanual/salf210.htm
SALF210 - Self Assessment Tax Returns: other taxpayer obligations: requirement to notify chargeability
Taxpayers who do not receive a tax return are required to notify chargeability to income tax or capital gains tax
Section 7(1)
Self Assessment is a system for dealing with tax returns and claims. It applies to taxpayers who are identified as requiring a tax return and who are issued with a notice to file or a paper self assessment tax return incorporating a notice to file. It also applies to people who make a claim outside a tax return.
HMRC is not always able to identify who needs a tax return so there is a requirement to notify chargeability. Any person who has not been required to complete a tax return, but who nonetheless has profits or chargeable gains on which tax is due must notify an officer of the Board that they are chargeable to tax.
Bolding is my emphasis. Only if you ?has profits? or "chargeable gains on which tax is due" which for a person only starts above the threshold allowances for when they are "chargeable to tax". Then you must notify.
Time limit for notification
The time limit for notifying chargeability is six months from the end of the tax year in which the tax liability arises. Notification must be received on or before 5 October.
You have until the 5th of October in the next tax year, to tell them about tax you owe them in the previous tax year.
Even if you have zero earnings, you need to submit tax returns.
See above.
Operating a business is not connected to profits.
Most businesses need to make a profit to keep going.
Dormant companies are still companies for example.
Irrelevant here, as when you submit form CT41G, you tell HMRC that the company is not trading, that it is dormant and you don?t have to file a tax return for that period on (but you still have to for the period up to the dormant date). Now if you trade after having told them that the company is dormant (without filing form CT204), than you are breaking the law - which is a completely different situation to a person not filing a tax return when they don?t earn above the threshold.
My point being: It is not tax evasion, when you owe no taxes. Nor is it illegal. Just a technicality. And one from 10+ years of experience, they don't care about.
For those abroad:
As a basic rule: UK tax is territory based, especially for company's (for the most part).
For individuals it's domiciled based - if you spend less than 90 days a tax year in the UK. Then you as an individual owe no tax.