Administrative and Support and Waste Management and Remediation Services
561
Subsector
Administrative and Support Services
5619
Industry Group
Other Support Services
561990
National Industry (This Code)
All Other Support Services
Official NAICS Description
Source: U.S. Census Bureau 2022 NAICS
📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This industry comprises establishments primarily engaged in providing day-to-day business and other organizational support services (except office administrative services, facilities support services, employment services, business support services, travel arrangement and reservation services, security and investigation services, services to buildings and other structures, packaging and labeling services, and convention and trade show organizing services).
Illustrative Examples:
Bartering services
Flagging (i.e., traffic control) services
Bottle exchanges
Float decorating services
Inventory taking services
Contract meter reading services
Lumber grading services
Diving services on a contract or fee basis
✓ Small Business Eligibility at a Glance
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
$16.5M average annual receipts
Measurement Period
3-year average
Standard Type
Revenue-Based
Applies To
All contracts under NAICS 561990
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
Cross-References
The following activities are classified elsewhere in the NAICS system:
→Providing office administrative services--are classified in Industry 561110, Office Administrative Services;
→Providing facilities support services--are classified in Industry 561210, Facilities Support Services;
→Providing employment services--are classified in Industry Group 5613, Employment Services;
→Providing business support services--are classified in Industry Group 5614, Business Support Services;
→Providing travel arrangement and reservation services--are classified in Industry Group 5615, Travel Arrangement and Reservation Services;
→Providing security and investigation services--are classified in Industry Group 5616, Investigation and Security Services;
→Providing services to buildings and other structures--are classified in Industry Group 5617, Services to Buildings and Dwellings;
→Providing packaging and labeling services--are classified in Industry 561910, Packaging and Labeling Services;
→Organizing, promoting, and/or managing conferences, conventions, and trade shows (whether or not they manage and provide the staff to operate the facilities in which these events take place)--are classified in Industry 561920, Convention and Trade Show Organizers;
→Retailing bottled water--are classified in U.S. Industry 445298, All Other Specialty Food Retailers;
→Providing operating advice and assistance to businesses and other organizations on administrative management issues, such as business start-up consulting services--are classified in U.S. Industry 541611, Administrative Management and General Management Consulting Services; and
→Promoting the business interests of their members--are classified in Industry 813910, Business Associations.
How to Use NAICS 561990 in SAM.gov
NAICS code 561990 — All Other Support Services — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Other Support Services space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of $16.5M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 561990.
NAICS code 561990 is 'All Other Support Services', classified under the Administrative and Support and Waste Management and Remediation Services sector (NAICS 56). This industry comprises establishments primarily engaged in providing day-to-day business and other organizational support services (except office administrative services, facilities support services,
What is the SBA small business size standard for NAICS code 561990?
The SBA defines a small business under NAICS code 561990 (All Other Support Services) as one with $16.5M average annual receipts. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
How do I register NAICS code 561990 in SAM.gov?
To register NAICS code 561990 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 561990 (All Other Support Services) to your NAICS code list. You may designate one code as your Primary NAICS code.