WOSB stands for woman-owned small business, the certification for small businesses that are at least 51 percent owned and controlled by one or more women who are US citizens. Unlike small business status itself, which applies everywhere, WOSB set-asides are limited to a specific list of industries, the NAICS codes where SBA has found that women-owned firms are underrepresented in federal contracting. That list is shorter than most people expect, so the first real question is not whether you qualify by ownership, it is whether your industry is even on it.
Ownership and control, both required
Meeting the 51 percent ownership threshold is not the whole test. SBA also checks control, meaning a qualifying woman owner actually runs the business, both daily operations and longer-term decisions, rather than holding the ownership stake while someone else runs things. Applications get flagged on control more often than on ownership itself, especially in businesses with a non-owner manager or a minority partner who is unusually involved. SBA looks at concrete signals: who signs contracts, who can hire and fire, and who sets the business's direction from one year to the next, not just who is named on the ownership documents.
Why the industry list exists
SBA built the covered industry list from its own study of federal contracting data, looking for the NAICS codes where the dollars going to women-owned firms lagged behind what their numbers in that industry would predict. The list gets revisited from time to time, so an industry that was not covered a few years ago is not guaranteed to stay that way, and the reverse is also true. Check SBA's current WOSB program page rather than relying on an old memory of the list, your own or anyone else's.
WOSB vs EDWOSB
| WOSB | EDWOSB | |
|---|---|---|
| Ownership and control | Women, 51 percent, US citizens | Same |
| Personal wealth cap | None | Yes, under SBA's caps |
| Set-asides reached | Covered industries | Covered industries, plus a slightly wider set |
EDWOSB is not a separate program so much as WOSB with an extra requirement and a slightly wider door. If the economic disadvantage caps fit your ownership situation, EDWOSB is worth the additional documentation. If they do not, standard WOSB still covers the core set-asides with no wealth cap at all.
How you get certified
Certification runs through SBA directly, at no cost, or through an SBA-approved third-party certifier, which may charge a fee. Either path checks the same underlying facts: ownership, control, and citizenship, with additional financial documentation for EDWOSB. See WOSB, how to certify for the full document list and process.
Who it fits
WOSB fits businesses that already have a woman clearly and provably in charge, not just on the cap table, competing in an industry SBA has actually designated. Check your specific NAICS code against the current list before you invest time in the rest of the application, because a business that is entirely woman-owned but working in an industry the program does not cover gets nothing from WOSB that self-certified small business status did not already provide.