NAICS 541990

All Other Professional, Scientific, and Technical Services

Updated July 2026 — federal spending and agency data cross-checked against SAM.gov and USAspending.gov.

Niche professional services and specialized technical consulting.

Federal Spending

$3B+ annually

Top Agencies

DoD, All agencies

Market Outlook

Growing +5% annually. Government focus on innovation = new consulting opportunities.

13 CFR § 121.201SBA Size Standard

Small Business Threshold: $19.5M

Calculated on a 5-year average annual receipts (gross). Businesses with average revenue or headcount at or below this ceiling may qualify as small businesses for prime federal solicitations assigned NAICS 541990, subject to affiliation and program rules.

Calculate Size Eligibility →

Common Federal Contracts

1

Specialized technical consulting

2

Niche research and analysis

3

Industry-specific expertise services

4

Emerging technology consulting

Contractor Competitive Advantage

Expertise-driven market = niche advantage. Innovative firms = premium pricing. Low barriers to entry.

Relevant Certifications

8(a)

WOSB

Top Procuring Agencies

DoD

Major buyer in this sector

All agencies

Major buyer in this sector

How to Win in This Sector

  1. 1. Verify Your NAICS: Make sure this NAICS code matches your primary business activity. You can only claim set-asides for your primary NAICS.
  2. 2. Apply for Certifications: Most contracts in this sector allow 8(a), WOSB, HUBZone, or SDVOSB certifications. These give you advantages in bidding.
  3. 3. Target Top Agencies: Identify the top 3 agencies hiring in this sector and research their procurement needs.
  4. 4. Assess Your Advantage: Review the competitive advantages above and determine how your firm differentiates.
  5. 5. Build Relationships: Attend industry days, connect with contracting officers, and respond to RFIs (Requests for Information).
Frequently Asked Questions

Everything You Need to Know Before Bidding

Straight answers on data privacy, free trial access, and federal contracting workflows.

NAICS 541990 covers All Other Professional, Scientific, and Technical Services: Niche professional services and specialized technical consulting. Federal agencies spend $3B+ annually annually on contracts in this category.

Have a specific question about your NAICS or team size?

Our GovCon capture specialists respond within 1 business hour.