Small Business Size Standard

A small business size standard is the numerical threshold established by the Small Business Administration for each NAICS code that defines the upper boundary of what constitutes a "small business" for federal contracting, loan, and program eligibility purposes. Standards are expressed as either maximum annual average receipts (revenue) in millions of dollars or maximum number of employees, depending on the industry.

What is a Small Business Size Standard?

The SBA publishes size standards in 13 CFR Part 121, organized by NAICS code. For most professional services, IT, and consulting NAICS codes, the standard is a revenue ceiling (e.g., $34M for NAICS 541512 Computer Systems Design, $25M for NAICS 541611 Administrative Management Consulting). For manufacturing and some other industries, the standard is an employee headcount ceiling (e.g., 500 or 1,000 employees depending on the specific sector).

When a firm certifies itself as small on a federal solicitation, it must measure its size against the standard for the primary NAICS code designated in that solicitation, not its own preferred NAICS code. Revenue is typically averaged over the firm's three most recently completed fiscal years. Employee counts are calculated as an average over the past 12 months including part-time employees.

Affiliation rules are critical: two firms are affiliated when one controls or has the power to control the other through ownership, interlocking management, or identity of interest. The revenues and employees of affiliated firms are added together when determining size, which can disqualify a nominally small firm. The SBA's mentor-protege program provides an exception to affiliation for approved mentor-protege relationships.

Competitors may challenge the size status of an apparent awardee through a size protest filed with the SBA.

Why Small Business Size Standards Matter for Government Contractors

Misunderstanding size standards is one of the most common and costly mistakes in federal contracting. A firm that self-certifies as small when it exceeds the applicable threshold, whether through organic growth or through undisclosed affiliated entity revenues, risks False Claims Act liability, contract termination, and debarment. Monitoring size status annually and before each certification, including affiliation analysis, is essential compliance practice.

Example

A technology staffing firm has $28M in annual revenues averaged over three years. It bids on a set-aside contract under NAICS 541512 with a $34M size standard and correctly self-certifies as small. The following year, after its parent company acquires a $15M affiliate, the combined revenues are $43M, exceeding the threshold. The firm must recertify as "other than small" at the next option period, potentially affecting its set-aside eligibility.

Frequently Asked Questions

Where can I look up the size standard for my NAICS code?

The SBA maintains an online Size Standards Tool at sba.gov/size-standards where you can enter any NAICS code and view the current standard in seconds. Size standards are periodically revised through SBA rulemaking; always verify the current standard rather than relying on memory from previous solicitations.

Is size status determined once per year or per contract?

Size status is determined as of the date the firm submits its offer or otherwise certifies its size on a specific solicitation. It is not a permanent designation based on an annual filing. A firm that was small when it won a contract may exceed the standard later, but the initial award is not retroactively voided. Recertification is required at specific milestones such as option exercises and certain contract modifications.

What if my firm is between two NAICS codes and one has a larger size standard?

The contracting officer assigns the primary NAICS code to the solicitation based on the principal purpose of the work. You must measure your size against that specific NAICS code's standard, not another code with a higher threshold. Disagreements about the appropriate NAICS code assignment can be raised with the contracting officer or through a size protest, but the NAICS code the contracting officer assigns governs eligibility.

Do employee benefits count toward the employee size standard?

For employee-based size standards, the count includes all employees (full-time, part-time, and temporary) on the payroll over the previous 12 months, averaged. Benefits status does not matter; what counts is whether the individual is on the payroll. Independent contractors are generally not counted unless they perform the same duties as employees and their work is controlled by the firm in the manner typical of employment.