Owning your own business benefits you in two major ways: Tax benefits and control of your own life.
Having your own business, even if it is something really small, like creating greeting cards for people, or consulting, or commodities distribution, opens up a wealth of tax benefits that can save you quite a bit on taxes. The downside to this, if you consider it a downside, is the necessity of good record keeping.
For example, if you keep a record of everywhere you go in your car, those trips used for your business can net you about $0.33 per mile in reduced taxes.
Another way of looking at this is, without a business, imagine throwing a dollar out your car window every three miles you travel. I average 12,000 miles a year on my car for business purpo