When I signed up for adsense I saw TAX information is required, but only if you live in U.S. Erm, I live in the UK and need to know.. If you are earning over a certain amount from adsense or another ad network and you are over 16, does it count as being self-employed? Like.. As a webmaster or something? If so.. Does it mean you would be legally required to pay tax? and/or national insurance?
If you earn over your personal tax allowance which is something like £5500 a year then yes, you would be liable to pay income tax on any additional earnings the tax man may find out about.