Women-Owned Small Business Set-Asides, Explained

A WOSB set-aside is a federal contract that a contracting officer reserves so that only certified Women-Owned Small Businesses (WOSBs) — or, in some industries, Economically Disadvantaged WOSBs (EDWOSBs) — can compete. It is one of the tools the U.S. Small Business Administration (SBA) uses to help the government reach its statutory goal of awarding at least 5% of all federal contracting dollars to women-owned small businesses each year.

What exactly is a WOSB set-aside contract?

The WOSB Federal Contract Program is authorized under the Small Business Act and governed by 13 CFR Part 127 and FAR Subpart 19.15. It lets a contracting officer restrict competition to WOSBs or EDWOSBs in industries where SBA has determined women-owned firms are underrepresented.

A set-aside is allowed only when the officer reasonably expects, based on market research, that two or more eligible firms will submit offers and that award can be made at a fair and reasonable price. This is the WOSB version of the federal "Rule of Two."

What is the difference between a WOSB and an EDWOSB?

Both require a small business that is at least 51% unconditionally and directly owned and controlled by one or more women who are U.S. citizens, with those women managing day-to-day operations and long-term decisions (13 CFR 127.200–127.202).

An EDWOSB is simply a WOSB whose owner also meets an economic-disadvantage test under 13 CFR 127.203. Every EDWOSB is, by definition, also a WOSB. The current thresholds (effective December 19, 2022) are:

• Personal net worth below $850,000 (excluding the owner's interest in the business and equity in her primary residence)
• Adjusted gross income averaged over the prior three years that does not exceed $400,000 (exceeding it creates a rebuttable presumption against disadvantage)
• Total assets of $6.5 million or less (this test includes the primary residence and the business value)

Which test applies depends on the industry, not on a per-contract waiver. SBA designates some NAICS codes as "underrepresented" (EDWOSB set-asides) and others as "substantially underrepresented" (WOSB set-asides, where the economic-disadvantage test does not apply).

Which contracts can actually be set aside for women-owned firms?

Only contracts in SBA-designated NAICS industries qualify, and SBA must study the marketplace every five years to identify them. Under the 2022 designation, 759 NAICS industries are eligible: 113 "underrepresented" (EDWOSB-eligible) and 646 "substantially underrepresented" (WOSB-eligible).

Sole-source dollar limits

When an officer does not expect two or more eligible offers, a sole-source award is possible if the firm is already certified, is responsible, and the price is fair and reasonable. The anticipated award cannot exceed:

• $7,000,000 for a manufacturing NAICS code
• $4,500,000 for all other requirements

How does a firm get WOSB certified, and what does it cost?

There is no cost to apply to SBA for certification (13 CFR 127.300). Firms apply through MySBA Certifications at certify.sba.gov, or submit evidence that they were certified by an SBA-approved third-party certifier. Active SAM.gov registration is required, and certification runs on a three-year cycle with a program examination.

The four SBA-approved third-party certifiers are the Women's Business Enterprise National Council (WBENC), the U.S. Women's Chamber of Commerce, the National Women Business Owners Corporation (NWBOC), and the El Paso Hispanic Chamber of Commerce. A firm certified through a third party must still upload its certificate and citizenship proof to MySBA before bidding.

Is WBENC the same as WOSB certification?

No. WOSB/EDWOSB is the SBA credential for federal set-asides. WBE (WBENC's Women's Business Enterprise credential) is aimed at corporate supplier-diversity programs and renews annually. WBENC is an SBA-approved third-party certifier, so applicants can pursue WOSB alongside WBE — but the two serve different markets, and a firm may hold one, both, or neither. (A separate credential, MBE from NMSDC, certifies minority-owned firms and is not part of the women-owned programs.)

How can a buyer verify a women-owned vendor is genuinely certified?

Verification should always be registry-based, never a self-claim. For federal awards, contracting officers confirm WOSB/EDWOSB status in SAM.gov and SBA's Small Business Search before award (FAR 19.1503–19.1506); offers without the certification designation are removed from consideration.

For any buyer, the practical checklist is: confirm the certifying body, the certificate or entity name in the issuing registry, and the expiration date, then re-check on a cadence since certifications expire.

Where do certified women-owned B2B vendors actually cluster?

The Womyn Owned directory tracks 5,581 SBA-certified WOSB/EDWOSB B2B vendors across all 50 states plus DC and Puerto Rico, of which 1,831 hold EDWOSB status. 945 show federal contract activity totaling roughly $2.83 billion in obligations, with data sourced from the SBA Small Business Search and USAspending.gov.

Supplier concentration is highest in Virginia (520 vendors), California (494), Texas (489), Florida (472), Georgia (400), and Maryland (357) — useful starting points for buyers building a women-owned vendor pipeline. Browse certified WOSB vendors or filter by state and industry to shortlist.

Why buyers prioritize women-owned vendors

On the federal side, the 5% statutory goal (15 U.S.C. 644(g)) is the driver. In FY2023, women-owned small businesses received $30.9 billion — 4.91% of eligible dollars, the highest dollar total on record but just short of the goal. On the corporate side, supplier-diversity programs are expanding: Hackett Group research found companies dedicated about 7.2% of spend to diverse-owned businesses and planned to push toward roughly 13%.

The addressable supply is large. The U.S. Census Bureau (reference year 2023) counted 14.2 million women-owned U.S. businesses, including 1.4 million (22.9%) women-owned employer firms — the pool from which certified WOSB vendors are drawn.