@Sitkinyu , there is no special registration required for "self-employed" -- you just report your incomes on schedule-C ( as mention above by @rjs ) and pay the Self-Employment tax ( also as explained above ). TurboTax is quite capable of handling Self-employment income along with W-2, 1099-DIV ( Dividend income ), 1099-INT ( Interest income ), 1099-B ( Sale/Barter income from sale of stocks/bonds etc. ). You are in good hands with TurboTax-- not to worry
full disclosure --- I am not affiliated with TurboTax, am a volunteer and except for de-minimis gifts etc. have no financial or other interest in TurboTax or Intuit -- all opinions are my own.
