Applicable Taxes in US

[amatuerfisher]

I was browsing the threads and learning a lot about the business aspect of freelance work. I was wondering about the tax situation for those of us living in the USA. If it is just one person doing this, do we have to report it to the IRS? What if we are under 18? I would be suprised if the government didn't want to come into the picture and take some of our hard earned money.

Thanks,

Fisher