I have been an electrician for 15 years, and had my license for about 5. I have been out on my own for 1year two months. I used to hang fans and cut in cans to the tune of about 5k a year on the side, all with my employers blessing. (he hated resi. gave it to me) I got my contractors license in 04, and my sidework bumped up to about 40k before I went out on my own. I did have liability insurance and commercial truck insurance the whole time, and I claimed it all on taxes. ( my wife said she would not go to jail for me, implying I would get in trouble with the tax man.) Plus I had a large client base with alot of referrals. I do no advertising and am very busy. I am very lucky for that.