Labor Day has a way of sneaking up on the federal market. The fiscal year is closing, the fourth-quarter obligation sprint is in full swing, and most of us are also trying to squeeze one more week out of summer vacation. This year, the Small Business Administration (SBA) used the last stretch of summer to publish something that deserves your attention before the beach chairs go back in the garage. Its proposal would change who counts as small in nearly every industry that sells to the Government, and the comment window closes two weeks after Labor Day.
On August 20, 2026, SBA published a proposed rule titled Small Business Size Standards, 91 Fed. Reg. 53741, alongside a second proposal setting out its Revised Size Standards Methodology, 91 Fed. Reg. 54096. Taken as a pair, they amount to the most consequential restructuring of what constitutes a “small business” since Congress first delegated the job to the SBA under Section 3(a) of the Small Business Act. To be clear, no threshold moves yet. Proposed rules bind no one, and a final rule realistically will not arrive until sometime in 2027. But the strategic consequences are large enough that planning should start now.
What SBA Is Proposing
Four changes carry most of the weight.
First, the code-by-code approach to setting size standards would end. Today, 13 C.F.R. § 121.201 assigns a separate standard to roughly 1,000 individual industries at the six-digit North American Industry Classification System (NAICS) level. SBA proposes to replace that architecture with 338 standards pegged to broader industry groups—276 defined at the four-digit level and 62 at the five-digit level. Each six-digit code would simply take on the standard assigned to its group, and the 18 subindustry exceptions currently on the books, including several that agencies rely on for federal-specific work, would be swept away. A contractor can therefore watch its operative threshold change even though SBA never took a fresh look at its particular line of business.
Second, the seven-factor framework SBA has used to calibrate standards would give way to a far simpler model organized around “average market size,” an analytical concept imported from antitrust practice. In rough terms, SBA would take the national size of an industry, divide it by how many separate geographic markets its firms actually compete in, and then correct for the balance of imports and exports. The cap that has long constrained receipts-based standards—it topped out at $47 million for a number of service and retail industries—would be abolished outright, with no new maximum in its place. And in a first for the agency, revenue-based thresholds would be indexed to productivity growth in the economy, not merely to inflation.
Third, head count would become the default yardstick wherever the statute allows it, shrinking the roster of receipts-based standards from 496 today to just 129. The construction sector would be measured entirely by employees going forward. This is not a neutral shift. A staffing-heavy business that generates modest revenue for each person on the payroll looks smaller under a receipts test than under an employee count, while a lean, high-revenue operation benefits from exactly the opposite. Which test your industry lands on will go a long way toward determining whether this rule is a gift or a problem.
Fourth, and most striking, SBA proposes to lower nothing. By the agency’s own account, its data pointed toward decreases in roughly 45 industries. It declined to propose a single one, citing post-2021 inflation, cumulative regulatory burden, an executive order on anticompetitive barriers, and the resilience of the defense industrial base. The result is a one-way ratchet. By SBA’s projections, the population of firms qualifying as small would expand by some 114,500, and about 37,000 of those companies already hold federal contracts—work that accounted for roughly $71 billion in fiscal year 2025 obligations.
The magnitudes are hard to overstate. Under the proposed table, engineering services would jump from $25.5 million to $252 million. Computer systems design and related services would climb from $34 million to $531 million. Management and technical consulting would land at $295 million, facilities support at $156 million, and scientific research and development at 2,800 employees, nearly triple the current 1,000. Employee-based standards across aerospace and defense manufacturing would see comparable jumps. These are not adjustments at the margin; several thresholds grow tenfold. To put them in perspective, a 2,700-person research lab or a half-billion-dollar IT integrator would qualify as a small business. The proposed rule essentially redefines the middle of the market as small.
Why the Legal Architecture Matters
The threshold numbers will get the headlines, but three features of the existing regulatory framework will decide what the rule actually does to any given company.
The first is affiliation. When SBA measures size under 13 C.F.R. § 121.103, it does not look at the bidding entity alone. The receipts or employees of every affiliate, domestic and foreign, are counted too, and affiliation turns on the power to control, whether or not that power is ever exercised. A company that appears comfortably small under a $252 million standard on a stand-alone basis may be nothing of the sort once a parent, a set of common investors, or the rest of a private equity sponsor’s portfolio enters the math. For sponsor-backed contractors, the size question and the affiliation question are really the same question, and the answer turns on governance terms, minority protections, and common-management facts that most operating teams have never had reason to examine.
The second is timing. Size is generally determined as of the date of a written self-certification submitted with an initial offer that includes price, under 13 C.F.R. § 121.404, and the recertification triggers in 13 C.F.R. § 125.12 govern what happens after a merger, acquisition, or novation and at the five-year mark on long-term contracts. Because the proposed standards will apply to solicitations and recertifications after the effective date, contractors on multiple-award vehicles will face a period during which their representations were made under one standard and their eligibility for orders and options is measured under another. That transition, not the headline numbers, is where protests will cluster.
The third is the Rule of Two in Federal Acquisition Regulation 19.502-2. A contracting officer must set aside an acquisition above the simplified acquisition threshold—that is, reserve it for small business competition—when there is a reasonable expectation of offers from at least two responsible small businesses at fair market prices. Once tens of thousands of seasoned contractors are back inside the small business tent, that expectation will be met with far greater frequency, and on much larger procurements. Requirements that have been competed on an unrestricted basis for years will begin shifting into the set-aside column, and a firm that remains other than small will have no path to prime them.
Where the Rule Will Be Tested
The blanket refusal to reduce any standard is the proposal’s most vulnerable feature. The Small Business Act requires SBA to ensure that size standards vary from industry to industry to reflect differing characteristics and to make its analysis and data publicly available before adopting a standard. A uniform decision to override the agency’s own findings in 45 industries invites the argument that the final rule departs from the record without reasoned explanation. The act also provides a petition process, with judicial review, for challenging a size standard within 30 days of publication of the final rule. We would expect at least one such challenge and expect the methodology rule to be the target, since the market-size model has no track record in this arena. It was borrowed from a different body of law for a different purpose.
The distributional effects will also draw fire from within the small business community itself. SBA concedes in the preamble that growing firms sitting just under the current thresholds stand to feel the sharpest competitive pressure from the newly eligible. It is easy to see why. A service-disabled veteran-owned business doing $20 million a year competes today against firms of roughly its own scale. Under the proposal, the same set-aside could pit it against engineering houses more than ten times its size, arriving with incumbent contracts, deep past performance files, and full-time capture shops.
What Contractors Should Do Before the Leaves Turn
The comment period closes on September 21, 2026. The rule rewards companies that use that time well. The end of summer is traditionally when the federal market takes stock and resets. This year, the reset is real, and the companies that start now will be best positioned when the final rule lands.
Five Key Takeaways for Contractors
- Figure out where you land, affiliates and all. Whether this rule helps you or hurts you is a fact-intensive question, and no one can answer it without counting every affiliate. Pull the cap table, the shareholder or operating agreement, the board consent rights, and any management services or shared-officer arrangements, and read them the way SBA’s Office of Hearings and Appeals would. A sponsor-backed company should start from the assumption that the rest of the portfolio counts against it unless the governance documents establish otherwise. Do the arithmetic under both a receipts test and a head-count test, because the proposal moves many industries from one to the other and the answer can flip. And if the numbers put you near a threshold, treat that as a red flag. Hovering at the line means absorbing all of the new competition with none of the new eligibility, and it is worth knowing now, while there is still time to do something about it.
- Re-sort your pipeline around the proposed industry groups, because the codes you know may no longer control. The consolidation to four- and five-digit groups, together with the disappearance of every exception, means the exercise has to be done recompete by recompete. For each one, ask three questions. Could the Government now satisfy the Rule of Two with capable small firms it could not find before? Would you be eligible to bid if it converts? And which multiple-award vehicles carry a size representation that will be measured against a different standard when the next order or option comes up? What should emerge is a working list of programs in danger of moving behind set-aside lines, a second list of targets that open up to you for the first time, and a recertification calendar for every vehicle you hold.
- Comment with data, not adjectives. SBA has to build a record, and the Small Business Act requires the agency to consider and publicly address industry-specific analysis before it adopts a standard. Comments that say the increases are too big or too small will get filed and forgotten. Comments that show, with data, that a particular four-digit grouping lumps together industries with very different cost structures, or that the proposal says nothing about how existing set-aside contracts and pending recertifications are handled on the effective date, give the agency something it has to answer. Coordinate with your trade association so the industry speaks with one voice on the structural points, then file separately on the issues specific to your business.
- Get to the best partners before the rest of the market does. Newly small firms with real capacity will be spoken for within months of the final rule, and the mentor-protégé, joint venture, and subcontracting math changes in ways that reward early movers. A large business that expects to stay other than small should be scouting the $100 million to $300 million companies in its lanes with the depth to perform a genuine share of the work, and locking in those relationships now. A company headed the other direction, toward newly small status, should be deciding which joint venture partners it wants and which set-aside vehicles it needs to be on when the rule takes effect. Either way, the teaming agreements you sign this fall should anticipate the recertification and affiliation consequences of the rule rather than ignore them.
- Put the rule on the deal team’s desk. This rule changes what a target is worth and what a deal does to your own size status. A mid-tier acquisition that would have destroyed a target’s small status under the current thresholds may leave it comfortably small under the new ones, and prices for growth-stage services businesses will adjust to that reality. The reverse also holds. For a portfolio company sitting just over a threshold, a restructuring or recapitalization that untangles its affiliation picture may do more for enterprise value than any new contract win. Any transaction closing in the next 18 months should be modeled under both the current and proposed standards, with the 30-day recertification obligation after a change in control built into the closing checklist.
