Tutoring is also one of the companies you can start for lower than $100. It was more difficult to market your tutoring services, but online platforms make it easier than ever. You can learnsome useful ideas from YouTube videos on house painting, free Home Depot workshops, and a few follow painting around your individual residence. News & World Report he started with $100 and went door-to-door, eventually building a painting business with annual revenues of $2.5 million.