SBA Size Protests: Eligibility, Filing, and Appeals

SBA Size Protests: Eligibility, Filing, and Appeals Processes

Compiled & reviewed by the EntityCodes Editorial Team (Tech Labs FZ LLC) · Data verified: 2026-06-28

An SBA size protest is a formal administrative challenge disputing a bidder's small business self-certification under a specific federal contracting solicitation.

Filing a Size Protest (13 CFR § 121.1001)

When a federal agency awards a small business set-aside contract, disappointed bidders can challenge the awardee's small business status ^[1]. The protest rules are codified under 13 CFR § 121.1001. The protest must be filed with the contracting officer within 5 business days of bid opening or notification of the apparent awardee ^[cfr-sba-13].

The contracting officer forwards the protest to the SBA Government Contracting Area Office, which conducts a review. The SBA Area Office issues a formal Size Determination. Disappointed parties can appeal this decision to the SBA Office of Hearings and Appeals (OHA) within 15 calendar days of receipt ^[cfr-sba-13].

Federal Size Standards & Regulatory Rules

To support the core compliance tasks detailed in this guide on SBA Size Protests: Eligibility, Filing, and Appeals Processes, compliance officers and corporate attorneys must consult several small business size standards references. The main limits are outlined in the U.S. Small Business Administration (SBA) Table of Small Business Size Standards, and codified in federal law in the Electronic Code of Federal Regulations (eCFR) 13 CFR Part 121 - Small Business Size Regulations. Size protests and legal appeals are decided by the SBA Office of Hearings and Appeals (OHA) Size Appeal Decisions and SBA Rules of Practice. Monetary standards are adjusted for inflation according to the Federal Register Small Business Size Standards Adjustment for Inflation Notice. Affiliation audits examine corporate structures under the rules of Electronic Code of Federal Regulations (eCFR) 13 CFR § 121.103 - SBA Corporate Affiliation Rules. Calculation of corporate revenues averages receipts using Electronic Code of Federal Regulations (eCFR) 13 CFR § 121.104 - Calculation of SBA Annual Receipts, while employee headcounts are calculated under Electronic Code of Federal Regulations (eCFR) 13 CFR § 121.106 - Calculation of SBA Employee Headcount. Contractor sizes are verified in the federal procurement database using the GSA Federal Procurement Data System (FPDS) FPDS Government Contracting Size Standard Verification Guidance. The statistical models for size limits are detailed in the U.S. Small Business Administration (SBA) SBA Size Standards Methodology Whitepaper, and audit integrity reviews are published in the Government Accountability Office (GAO) SBA Size Standards: Actions Needed to Improve Registry Integrity.

💡 Expert Guidance: SBA Size Protest Deadline Laches

Filing an SBA size protest too late is the most common cause of dismissal. Under SBA rules, a protest must be submitted to the contracting officer within 5 business days of receiving notification of the apparent successful offeror. Protests filed even hours after this window are dismissed without review.

Frequently Asked Questions

Who can file an SBA size protest? ▾

A size protest can be filed by any bidder on the contract, the contracting officer, or the SBA itself.

How long do I have to file a size protest? ▾

You must file the protest within 5 business days of receiving notification of the apparent awardee.

What is a formal SBA size protest? ▾

A size protest is an administrative challenge filed under 13 CFR § 121.1001 disputing whether the apparent winning bidder on a small business set-aside contract actually satisfies the assigned SBA size standard.

What is the deadline to file a size protest on a negotiated procurement? ▾

The protest must be filed with the Contracting Officer within 5 business days after receiving formal notification of the apparent awardee or the post-award notification from the federal agency.

Who has standing to file a size protest? ▾

Standing is limited to: any offeror on the solicitation who was not eliminated from competition, the Contracting Officer, the SBA Government Contracting Area Director, or the SBA Associate Administrator.

Which office reviews appeals of SBA Area Office size determinations? ▾

Appeals must be submitted to the SBA Office of Hearings and Appeals (OHA) in Washington, D.C., within 15 calendar days of receiving the Area Office's size determination.

What happens to a contract award while a size protest is pending? ▾

The Contracting Officer must stay the contract award while the SBA Area Office reviews the protest, unless the Contracting Officer determines in writing that urgent procurement requirements protect the agency's interests.

How long does the SBA Area Office have to resolve a size protest? ▾

The SBA Area Office is typically required to issue its size determination within 15 business days after receiving the formal protest from the contracting officer.

Can a size protest be filed on a sole-source contract? ▾

Yes, the SBA or the Contracting Officer can file a size protest on a sole-source small business contract, but disappointed competitors do not have standing to protest sole-source awards.

What is the standard of proof required to overturn a size determination on appeal? ▾

The SBA Office of Hearings and Appeals (OHA) will only overturn a size determination if the appellant proves that the Area Office's decision was based on a clear error of law or fact.