Federal contracts for NAICS 561499 — All Other Business Support Services

Frequently asked questions

What is NAICS 561499?

NAICS 561499 is the federal industry code for All Other Business Support Services. The Census Bureau maintains the NAICS taxonomy; federal contracting officers use it to classify solicitations and confirm bidder eligibility.

How do I bid on federal contracts as a small business in NAICS 561499?

Register your business in SAM.gov, get a UEI, and confirm your NAICS code matches the solicitation's primary NAICS. Then write a capability statement that maps your past performance to the work in the RFP. Themis automates the matching and gives you a free AI brief for every active opportunity.

Do I need a SAM.gov registration to bid?

Yes — every federal contract award above the micro-purchase threshold requires the vendor to have an active SAM.gov registration with a Unique Entity Identifier (UEI) and the relevant NAICS codes listed on the registration.

What set-asides apply to NAICS 561499?

Common federal set-asides — Small Business (SBA), 8(a), HUBZone, SDVOSB, WOSB, EDWOSB — apply per solicitation, not per NAICS code. Each opportunity declares its own set-aside; Themis displays the eligibility class on every card so you can filter to ones you qualify for.

Popular industries

Explore federal contracting in other high-volume NAICS codes.

• NAICS 236220Commercial & Institutional Building Construction
• NAICS 336611Ship Building & Repairing
• NAICS 332919Other Metal Valve & Pipe Fitting Manufacturing
• NAICS 336413Other Aircraft Parts & Auxiliary Equipment Manufacturing
• NAICS 334412Bare Printed Circuit Board Manufacturing
• NAICS 238220Plumbing, Heating & Air-Conditioning Contractors
• NAICS 333998All Other General Purpose Machinery Manufacturing

Browse by set-aside

See opportunities reserved for each small-business program.

• Small BusinessSBA Small Business
• 8(a)SBA 8(a) Business Development Program
• HUBZoneHUBZone
• WOSBWomen-Owned Small Business (WOSB)
• EDWOSBEconomically Disadvantaged WOSB (EDWOSB)
• SDVOSBService-Disabled Veteran-Owned Small Business (SDVOSB)
• VOSBVeteran-Owned Small Business (VOSB)