With the help of Sageworks, a Raleigh, N.C.-based private-company data provider, Forbes.com has assembled a list of the 10 most profitable businesses--on a pretax basis--that could be run out of a home. The data were drawn from eight years worth of financial statements (nearly an entire business cycle) for tens of thousands of privately held U.S. companies with annual revenues under $1 million and bucketed by Internal Revenue Service classifications. Average pretax profits ranged from 8% to 14%.
If you’re a proudly gluten-free, vegan, whole foods health junkie, and you love sharing your clean-eating habits with others, consider starting your own business as a nutritionist and getting paid to help others achieve their health goals. But before you start prescribing those spinach-and-chia smoothies, do your research about licensing requirements. As is the case with every personal-care occupation on this list, you’ll need training as a registered dietician to operate your practice.
Event planning is a bit like wedding planning, just on steroids. The scope of this idea is so large that it includes everything from cheesy stag and hen do parties to sophisticated product launches. Again, the entry barriers are rather low, but a flush work portfolio and a few glowing testimonials are something you need to consider to get a good head start in this field. 
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