CNN Money's article The SBA Quagmire: Rebuilding a ravaged agency covers a range of issues facing the SBA. Buried in the article is a discussion of how to define small business.
This is an issue that constantly comes up when discussing the small business sector. The definition of small business used by many (including us) is companies with fewer than 500 employees.
This definition is widely used because this is how the data is reported by the SBA Office of Advocacy (which, interestingly enough, is not actually part of the SBA). The data comes from the U.S. Census Bureau. It does not include farms and a few other categories.
This definition is extremely broad and not useful for many purposes. Because of this, we segment the U.S. small business sector into:
1. Personal businesses: these are what the SBA Office of Advocacy calls "non-employer" businesses. This segment includes a wide range of full and part-time contractors, freelancers and other self-employed workers. There were just under 21 million personal businesses in the U.S. in 2006 (latest data available).
2. Micro businesses: these businesses have less than 5 employees but more than zero. We don't include personal businesses in the micro business category because employer businesses tend to behave differently than personal businesses do. There were roughly 2.8 million micro businesses in the U.S. in 2006.
3. Mainstreet small businesses: a term we've borrowed from Intuit, we define this group as more than 4 employees and less than 20. These companies tend to be owner/founder dominated but often have managers and organization structures. There were roughly 1.7 million mainstreet small businesses in 2006.
4. Mid-level small businesses: these are firms with between 20 and 49 employees. Mid-level small businesses often operate with management teams and professional management. This segment had about 406,000 firms in it in 2006.
5. Large small businesses: our "jumbo shrimp" segment, this group goes from 50 to 500 employees. Most of these firms are very different in scale, scope and operations than smaller small businesses. Almost all have professional management. There were about 220,000 firms in this segment in 2006.
We also segment deeper in our work (service versus manufacturing, by industry, high growth, etc.), but use this as our base level of segmentation.