Not an easy question. However, there are standards of comparison called "industry ratios" that can help you estimate your profits. Return on Investment (ROI), for example, estimates the amount of profit gained on a given number of dollars invested in the business. These ratios are broken down by Standard Industrial Classification (SIC) code and size, so you can look up your type of business to see what the industry averages are. These figures are published by several groups, and can be found at your library.
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