Set-Aside Codes Explained: 8(a), HUBZone, WOSB & SDVOSB (2026)
Federal set-aside codes mark contracts reserved for specific categories of small business so they don’t have to compete against large firms. The four most important programs are 8(a) (socially and economically disadvantaged businesses), HUBZone (Historically Underutilized Business Zones), WOSB/EDWOSB (women-owned and economically disadvantaged women-owned), and SDVOSB (service-disabled veteran-owned). Each requires SBA-recognized certification, and together they channel a large share of the federal government’s small-business contracting dollars.
Set-asides exist because the federal government has a statutory goal of awarding at least 23% of prime contract dollars to small businesses each year — and in recent years it has awarded well over $170 billion annually toward that goal, with additional sub-goals for each socioeconomic program. Knowing which set-asides you qualify for is one of the highest-leverage moves in government contracting: it shrinks your competition dramatically.
The 8(a) Business Development Program
The 8(a) program supports firms that are at least 51% owned and controlled by socially and economically disadvantaged individuals. It is a nine-year program that unlocks sole-source and competitive 8(a) set-aside contracts plus business-development mentoring.
- Core eligibility: 51%+ owned by a socially & economically disadvantaged U.S. citizen; personal net worth, income, and total-assets limits apply
- Term: Nine years, one-time (no re-entry)
- Benefit: Access to 8(a) sole-source and set-aside awards
HUBZone
The HUBZone program helps businesses in Historically Underutilized Business Zones. To qualify, your principal office must be in a designated HUBZone and at least 35% of your employees must live in a HUBZone.
- Core eligibility: Principal office in a HUBZone + 35% of employees residing in a HUBZone
- Benefit: HUBZone set-aside and sole-source contracts, plus a 10% price evaluation preference in full-and-open competitions
WOSB & EDWOSB
The Women-Owned Small Business (WOSB) and Economically Disadvantaged WOSB (EDWOSB) programs reserve contracts in industries where women-owned firms are underrepresented. Certification is required — through SBA’s free certification or an SBA-approved third-party certifier.
- Core eligibility: 51%+ owned and controlled by one or more women who are U.S. citizens; EDWOSB adds economic-disadvantage thresholds
- Benefit: WOSB/EDWOSB set-aside contracts in eligible NAICS codes
SDVOSB & VOSB
Service-Disabled Veteran-Owned Small Business (SDVOSB) and Veteran-Owned Small Business (VOSB) programs reserve contracts for veteran entrepreneurs. As of January 2023, SBA (via the VetCert system) handles certification government-wide.
- Core eligibility: 51%+ owned and controlled by one or more veterans (SDVOSB requires a service-connected disability)
- Certification: SBA VetCert (required for SDVOSB/VOSB set-aside and sole-source awards)
Certification is not automatic
Self-identifying in SAM.gov is not the same as being certified. 8(a), HUBZone, WOSB/EDWOSB, and SDVOSB all require an SBA-recognized certification before you can win those set-aside awards. Start certification early — it can take weeks to months.
How to find set-aside contracts
Once you know your certifications, filter for them. In SAM.gov Hunter you can filter opportunities by set-aside type (8(a), HUBZone, WOSB, SDVOSB, and Total Small Business) alongside NAICS code, agency, and deadline, and every result is scored for fit — so you spend time only on the bids you can actually win.
- Confirm and complete your certifications (8(a), HUBZone, WOSB/EDWOSB, SDVOSB).
- Identify your primary and secondary NAICS codes.
- Filter opportunities by your set-aside types + NAICS.
- Sort by fit score and deadline; save the strong matches.
- Run an AI solicitation analysis on each saved opportunity before you commit to bidding.
Filter federal & state opportunities by your set-aside type and NAICS — free.
Try set-aside search →Frequently asked questions
What does "set-aside" mean in government contracting?
A set-aside is a contract reserved for a specific category of small business (such as 8(a), HUBZone, WOSB, or SDVOSB) so those firms compete only against each other, not against large companies.
Do I need to be certified to win a set-aside contract?
Yes. 8(a), HUBZone, WOSB/EDWOSB, and SDVOSB all require an SBA-recognized certification. Self-identifying in SAM.gov is not sufficient for these set-aside awards.
Can a business qualify for more than one set-aside program?
Yes. A firm can hold multiple certifications at once — for example, an 8(a) firm that is also woman-owned and HUBZone-certified — which widens the pool of set-aside opportunities it can pursue.
How do I find contracts for my set-aside type?
Filter opportunities by set-aside type and your NAICS code. SAM.gov Hunter lets you filter federal and state opportunities by 8(a), HUBZone, WOSB, SDVOSB, and Total Small Business set-asides and scores each result for fit.