NAICS 541990

All Other Professional, Scientific, and Technical Services

Updated August 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.

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

What is NAICS code 541990 (All Other Professional, Scientific, and Technical Services)?

+

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.

Which federal agencies buy All Other Professional, Scientific, and Technical Services services?

+

The top federal buyers for NAICS 541990 are: DoD, All agencies. These agencies run the highest volume of solicitations in this NAICS category. Register in SAM.gov with this code and monitor each agency's forecast and open solicitations.

What types of federal contracts fall under NAICS 541990?

+

Common federal contracts in NAICS 541990 include: Specialized technical consulting; Niche research and analysis; Industry-specific expertise services; Emerging technology consulting. These range from task order contracts under GWACs to agency-specific BPAs and standalone solicitations.

Do small businesses have a competitive advantage in NAICS 541990?

+

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

What certifications help win NAICS 541990 contracts?

+

The most valuable certifications for NAICS 541990 contracts include: 8(a), WOSB. These certifications unlock set-aside competitions where you compete only against similarly certified firms, dramatically improving win probability compared to full-and-open competition.

What is the market outlook for NAICS 541990 in federal contracting?

+

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