When you are starting a business the most important thing is to determine your business's profitability. But the question is how do you do that. Well, it is really complex to determine profitability as you will have to consider on various factors. Some of the important factors are the competition in the market, the size of the market, demand and and supply in the market, etc. Profitability also depends on your skills, and knowledge. As well as resources you have and the team you build. You will have to conducting thorough market research to learn how profitable your business can actually become.