A joint venture is two or more businesses agreeing to bid on, and perform, a specific contract together as a single combined entity, while staying separate companies for everything else. It can be a newly formed legal entity or simply an unincorporated agreement between the parties; either counts. What makes it a joint venture rather than a teaming agreement is that both firms share the prime role. In a teaming agreement, one company stays the prime and the other stays a subcontractor underneath it.
Why businesses form one
A joint venture lets two firms combine what neither has alone, past performance, bonding capacity, technical staff, to go after work that would be out of reach separately. It is a common move when a contract's requirements span more than one company's real strengths.
When it keeps your small business status
Ordinarily, closely partnering with another business risks affiliation: SBA can treat the relationship as control and add the partner's size to yours, which can knock you out of small status entirely. A joint venture avoids that outcome in two situations. First, when both firms in the JV are themselves small under the size standard for the procurement, a small-small pairing. Second, when the JV is built on an SBA-approved mentor-protege relationship, which carries its own, broader exception even when the mentor is not small. Outside of those two situations, forming a JV with a business that is not small is ordinary affiliation, and it does not protect anyone's set-aside eligibility. See affiliation, the size trap for how that determination actually gets made, and the Mentor-Protege Program for how that specific exception works.
What voids the exception
The exception protects a joint venture that is real, not one that exists only on paper to get a small business through the door while a larger partner does the actual work. SBA looks at how the arrangement functions in practice: who manages performance, how the work is actually divided, and whether the small or protege partner performs a genuine share of it. A JV that looks small on the cover page but runs like the larger partner's subcontract underneath can lose the exception entirely, and that can happen after award, not just before it.
What the agreement has to contain
SBA's regulations spell out specific contents a joint venture agreement needs before it can rely on either exception: how ownership and profits are split, who manages contract performance, how work gets divided between the partners, and how the relationship winds down when the contract ends. A missing or vague clause is sometimes enough on its own to unwind the exception later, so treat the checklist as a requirement, not a formality, and confirm the current version with SBA or counsel rather than an old template.
Get help before you sign
The stakes on a joint venture agreement are higher than most paperwork you will sign in this business: get it wrong and you can lose the award, not just the argument. This is worth real legal review, not a template filled in over a weekend. An APEX Accelerator can point you toward free or low-cost help if you are not sure where to start.