Small Business Certification Guide for Government Contracts 2026

Small business status is the foundation of all SBA certifications. To qualify for 8(a), WOSB, SDVOSB, HUBZone, or small business set-asides, you MUST first qualify as a small business.

Key Points:

• Small business is self-certified (you declare, not SBA certifies)


• Size standards vary by NAICS code (industry-specific)


• Most service industries: Under $35M revenue (3-year average)


• Most manufacturing: Under 500-1,500 employees


• Construction: Varies by type, typically $15M-$39.5M revenue

Why It Matters: Small business set-asides represent 23%+ of all federal spending ($150B+ annually). If you do not qualify as small, you cannot access set-asides OR pursue 8(a)/WOSB/SDVOSB/HUBZone certifications.

Size Standard Varies by NAICS Code:

Examples:

• 541511 (Custom Computer Programming): $35M revenue


• 541512 (Computer Systems Design): $35M revenue


• 541330 (Engineering Services): $25.5M revenue


• 236220 (Commercial Building Construction): $45M revenue


• 238210 (Electrical Contractors): $19M revenue


• 541611 (Management Consulting): $25.5M revenue

How to Check Your Size Standard:

Identify your primary NAICS code (what you derive most revenue from)

Visit sba.gov/size-standards

Search for your NAICS code

Note the size standard (revenue or employee-based)

Revenue Calculation:

• Calculate 3-year average annual revenue


• Include ALL revenue (government + commercial)


• Include affiliated business revenue (if you own/control other businesses)

Employee Calculation:

• Count average monthly employees over 12 months


• Include part-time as fractions (20 hours/week = 0.5 employee)


• Include affiliated business employees

Self-Certification Process:

Small business status is SELF-CERTIFIED. You do not apply to SBA. You declare your small business status when:

Registering in SAM.gov

Submitting proposals on small business set-asides

Answering size representation questions in solicitations

Steps to Self-Certify:

Calculate your 3-year average revenue or employee count

Identify your primary NAICS code

Check size standard for that NAICS at sba.gov/size-standards

If you are under the size standard, you qualify as small

Represent as small business in SAM.gov and proposals

When You Must Recertify:

• Annually in SAM.gov


• With each proposal submission


• At contract award


• At option period exercise (multi-year contracts)

Size Protests: Competitors can protest your small business status. SBA Office of Hearings and Appeals investigates. If you misrepresented size, consequences include contract termination, debarment, civil penalties.