8(a) vs SDVOSB vs WOSB vs HUBZone
Beyond regular small business set-asides, SBA runs four socioeconomic contracting programs: 8(a), SDVOSB (service-disabled veteran-owned), WOSB/EDWOSB (women-owned) and HUBZone. Each unlocks its own set-asides, and in some cases sole-source awards. A firm can hold more than one. Here is how they compare, based on SBA's certification page and the regulations it cites.
| Program | Core eligibility | Certify through | Duration | Open now |
|---|---|---|---|---|
| 8(a) | 51%+ owned and controlled by socially and economically disadvantaged U.S. citizens; potential for success (often two years in business) | MySBA Certifications | Up to 9 years, once per lifetime | 16 set-asides |
| SDVOSB | 51%+ owned and controlled by service-disabled veterans | SBA VetCert | Ongoing while eligible | 114 set-asides |
| WOSB / EDWOSB | 51%+ owned and controlled by women who are U.S. citizens (EDWOSB adds economic limits) | MySBA Certifications or an approved third party | Ongoing while eligible | 30 set-asides |
| HUBZone | Principal office in a HUBZone and 35%+ of employees living in one | MySBA Certifications | Ongoing; recertify every 3 years | 39 set-asides |
8(a) Business Development
For small businesses at least 51% owned and controlled by U.S. citizens who are socially and economically disadvantaged. SBA lists the economic thresholds as personal net worth of $850,000 or less (excluding the business and primary residence equity), adjusted gross income of $400,000 or less, and total assets of $6.5 million or less (SBA 8(a) page, 13 CFR 124). The program lasts up to nine years: four "developmental" and five "transitional". A firm can participate only once. 8(a) firms can receive sole-source awards up to $5.5 million ($8.5 million for manufacturing). Above that, work is generally competed among 8(a) firms (FAR 19.805-1). SBA revised how individuals show social disadvantage in a rule effective September 10, 2026, so read the current SBA guidance before applying. Most 8(a) work is awarded sole-source and never posted as an open bid, which is why our 8(a) page shows only 16 open set-asides but 314 8(a) contracts coming up for recompete.
SDVOSB (and VOSB)
For small businesses at least 51% owned and controlled by one or more service-disabled veterans. For veterans with permanent and total disabilities, a spouse or permanent caregiver may control day-to-day operations (13 CFR 128.200). Since January 1, 2024 a firm must be certified by SBA VetCert to win SDVOSB set-aside and sole-source contracts, with limited grace periods for pending applications. The VA's veteran set-asides have always required certification (SBA veteran programs). The Department of Veterans Affairs is the largest SDVOSB buyer, under its own rule of two (see our rule of two guide).
WOSB and EDWOSB
WOSBs are small businesses at least 51% owned and controlled by women who are U.S. citizens. EDWOSBs also meet economic disadvantage limits similar to 8(a): net worth under $850,000, average adjusted gross income of $400,000 or less, and assets of $6.5 million or less (13 CFR 127 subpart B). WOSB set-asides are limited to industries where SBA has found women-owned firms underrepresented: EDWOSBs can compete in "underrepresented" and "substantially underrepresented" NAICS codes, WOSBs in "substantially underrepresented" codes. Check the list on the SBA WOSB program page. Sole-source awards are possible up to $5.5 million ($8.5 million for manufacturing) when competition is not expected (FAR 19.1506).
HUBZone
For small businesses with their principal office in a Historically Underutilized Business Zone, at least 35% of employees living in a HUBZone, and at least 51% ownership by U.S. citizens or certain eligible entities (SBA HUBZone page, 13 CFR 126 subpart B). Check addresses on the HUBZone map. Certified firms recertify every three years (13 CFR 126.500). Besides set-asides, HUBZone firms get a 10% price evaluation preference against large businesses in full and open competitions (13 CFR 126.613).
Which should you pursue?
- Pursue every program you genuinely qualify for. They stack, and each opens different set-asides.
- If you qualify for 8(a), consider the timing. The nine-year clock starts at admission, so be ready to use it.
- HUBZone is the only one based on location, not owner identity. Check the map before you sign an office lease.
- No certification? Total and partial small business set-asides (779 open) need none.
Rules and thresholds change. This is a summary, not legal advice. Confirm on SBA.gov.
All four still require being small
Every program requires the business to be small under the SBA size standard for the NAICS code of the contract (size standards). A certified firm that is too big for a particular code cannot win that set-aside. Check sizes code by code.
Application tips
- Start in MySBA Certifications (or VetCert for veteran programs), which provides checklists and pre-application guides.
- Expect to provide ownership and governing documents, tax returns, and proof of who controls day-to-day operations and long-term decisions. Control is where many applications stumble.
- Keep your SAM.gov registration active and consistent with what you tell SBA.
- Your local APEX Accelerator or SBA district office can review your package for free.
Where each program's work is right now
Open set-asides by program on AwardWatchdog today: SDVOSB 114, WOSB/EDWOSB 30, HUBZone 39, 8(a) 16, and small business 779. Contracts coming up for recompete: SDVOSB 390, WOSB/EDWOSB 340, HUBZone 216, 8(a) 314.
When you have found a few good fits, keep the pipeline full: browse all 1,234 open notices, check what closes this week and watch the 2,137 contracts coming up for recompete.
Frequently asked questions
Can a business hold more than one SBA certification?
Yes. A business can be, for example, both SDVOSB and HUBZone certified if it meets each program's requirements, and it can compete in each program's set-asides.
How long does 8(a) certification last?
Up to nine years, made up of a four-year developmental stage and a five-year transitional stage. A firm can participate only once.
Do HUBZone firms have to recertify every year?
No. Under current SBA rules (13 CFR 126.500), certified HUBZone firms recertify every three years, in the 90 days before the anniversary of their certification.
Is SDVOSB self-certification still allowed?
For SDVOSB set-aside and sole-source contracts, SBA VetCert certification has been required since January 1, 2024, with grace periods only for firms that applied by the deadlines.