Small Business Set-Asides Explained (2026)

Updated November 10, 2026. Facts come from official pages read on that date (listed under Sources). EasBid is an independent bid search service and is not affiliated with any government agency.

A small business set-aside is a government contract, or part of one, that only small businesses may compete for. Federal buyers must reserve many purchases this way under the Federal Acquisition Regulation (FAR), and the Small Business Administration (SBA) runs programs that open further reserved lanes for 8(a), HUBZone, women-owned and service-disabled veteran-owned firms. This guide explains when a set-aside happens, the kinds you will see on notices, and how to check you qualify.

What is the rule of two?

The core test is in FAR 19.502-2. For purchases of supplies or services above the micro-purchase threshold but not above the simplified acquisition threshold, the contracting officer must set the work aside for small business unless there is no reasonable expectation of getting offers from two or more responsible small businesses that are competitive on fair market price, quality and delivery. Above the simplified acquisition threshold, the contracting officer must set the work aside when there is a reasonable expectation that at least two responsible small businesses will offer and that award will be at fair market prices.

FAR 2.101 sets the micro-purchase threshold at $15,000 and the simplified acquisition threshold at $350,000, with exceptions named in the definitions. In plain terms: most federal buys between those numbers are reserved for small firms by default, and larger ones are reserved when market research shows enough small businesses can do the job.

FAR 19.502-2 also says that if only one acceptable offer comes in from a responsible small business on a set-aside, the contracting officer should generally award to that business. That is one reason it pays to answer even when you think few others will.

What are competitive and sole-source set-asides?

SBA describes two kinds. A competitive set-aside is used when at least two small businesses could do the work; the contract is then open only to small businesses. A sole-source award goes to one business without a competition, usually because only one business can meet the need. SBA says that to be considered for sole-source work, a business should be registered in SAM.gov and take part in any SBA program it qualifies for, and that some intended sole-source awards are posted publicly so other vendors can still respond.

What is a partial set-aside?

Sometimes only part of a purchase is reserved. FAR 19.502-3 says the contracting officer sets aside a portion of an acquisition, other than construction, for small business when a total set-aside is not appropriate, the requirement can be split into distinct portions, the buy is not under simplified procedures, and two or more responsible small businesses are expected to offer on the reserved portion. You will see this on larger supply and service buys where the agency wants both large and small suppliers.

Which SBA programs have their own set-asides?

SBA lists four socioeconomic contracting programs whose members can compete for set-asides reserved for them: the 8(a) Business Development program, the HUBZone program, the Women-Owned Small Business federal contract program, and the Service-Disabled Veteran-Owned Small Business program. SBA notes that taking part means fewer competitors on those contracts, but that you must meet the eligibility rules and certify your status before bidding.

FAR 19.203 says there is no order of precedence among those four programs. For buys above the simplified acquisition threshold, the contracting officer must first consider the four programs before an ordinary small business set-aside. At or below that threshold, the general small business set-aside rule does not stop an award under one of the four programs. Once SBA accepts a requirement into the 8(a) program, it stays there unless SBA agrees to release it.

Each program has its own guide: 8(a), HUBZone, SDVOSB, and the state-level WBE, MBE and DBE programs.

How do I know if my business counts as small?

Size is measured against the NAICS code on each solicitation. SBA says size standards vary by industry and are generally based on the number of employees or average annual receipts. A business can be small for one NAICS code and not for another, so check the code on every notice. You also represent your size in SAM.gov when you register.

SBA explains that interested parties can challenge the size of a winning small business. If SBA finds the business did not qualify for the set-aside, it is no longer eligible for that contract, and its decision can be appealed to SBA's Office of Hearings and Appeals. Get your size right before you bid. Our NAICS guide and NAICS lookup help you find the right code.

How do certification and self-certification work?

SBA says the process varies by program. For some, you self-certify by updating your SAM.gov profile. For others you apply to SBA, answer questions about ownership and control, and upload documents. Being small is something you represent; being 8(a), HUBZone, WOSB or SDVOSB requires meeting that program's tests and, for most, an SBA certification.

Can small businesses team up for set-aside work?

Yes. SBA says two or more small businesses can form a joint venture and still qualify for small business set-asides when the joint venture's documents meet SBA rules. Small businesses in the SBA Mentor-Protégé program can form a joint venture with their mentor, which may be a large business, and compete for contracts reserved for small businesses. A joint venture can also bid on service-disabled veteran-owned, women-owned or HUBZone set-asides if a member meets SBA's requirements for that program.

Do states and cities use set-asides?

Many do, under their own laws. State and local programs often certify minority-owned, women-owned and disadvantaged businesses, and many set participation goals on contracts rather than reserving whole contracts. When local buyers spend federal grant money, 2 CFR 200.321 asks them, when possible, to include small, minority, women's business and veteran-owned firms on solicitation lists and to split large buys so these firms can take part. Check each state's rules in our state vendor guides.

How do I find set-aside bids?

On SAM.gov the set-aside type appears on each notice. On EasBid you can browse small business set-aside bids, plus pages for 8(a), HUBZone, women-owned and SDVOSB set-asides, and save a search to get new matches by email.

Frequently asked questions

What does the rule of two mean?

Under FAR 19.502-2, a federal buy is set aside for small business when the contracting officer reasonably expects offers from at least two responsible small businesses at fair market prices. Between the $15,000 micro-purchase threshold and the $350,000 simplified acquisition threshold, the set-aside is the default unless that expectation is missing.

Can a large business bid on a small business set-aside?

No, not as the prime offeror. Only firms that are small under the size standard for the solicitation's NAICS code can compete. A large firm may still be a subcontractor or, through the SBA Mentor-Protégé program, a joint venture partner under SBA rules.

Which comes first: 8(a), HUBZone, WOSB or SDVOSB?

FAR 19.203 says there is no order of precedence among the four programs. Above the simplified acquisition threshold, contracting officers consider them before an ordinary small business set-aside.

Do I need to be certified to bid on a small business set-aside?

For an ordinary small business set-aside you represent your size in SAM.gov. The 8(a), HUBZone, WOSB and SDVOSB set-asides require meeting each program's eligibility rules and, for most, an SBA certification. SBA's page says some programs allow self-certification in SAM.gov.

What happens if a winner is found not to be small?

SBA says interested parties can challenge a winner's size. If SBA finds the business did not qualify, it is no longer eligible for that contract; the decision can be appealed to SBA's Office of Hearings and Appeals.

Sources

FAR 2.101 Definitions (acquisition.gov, read November 10, 2026)
FAR 19.502-2 Total small business set-asides (acquisition.gov, read November 10, 2026)
FAR 19.502-3 Partial set-asides (acquisition.gov, read November 10, 2026)
FAR 19.203 Relationship among small business programs (acquisition.gov, read November 10, 2026)
How to win contracts (SBA) (sba.gov, read November 10, 2026)
Size standards (SBA) (sba.gov, read November 10, 2026)
2 CFR 200.321 Contracting with small, minority and women's businesses (ecfr.gov, read November 10, 2026)

General information, not legal advice. Always follow the instructions in each solicitation.

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Small business set-asides explained