2022 NAICS national industry in sector 81 Other Services (except Public Administration)

813990 Other Similar Organizations (except Business, Professional, Labor, and Political Organizations)

NAICS 813990 is the US industry code for other similar organizations (except business, professional, labor, and political organizations). It covers establishments (except religious organizations, social advocacy organizations, civic and social organizations, business associations, professional organizations, labor unions, and political organizations) primarily engaged in promoting the interests of their members.

Code
813990 (2022 NAICS)
Title
Other Similar Organizations (except Business, Professional, Labor, and Political Organizations)
Part of
Business, Professional, Labor, Political, and Similar Organizations
SBA small business limit
Average annual receipts up to $13.5 million
Closest UK SIC
93191, 93199, 94990 (details)

Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.

Official definition

This industry comprises establishments (except religious organizations, social advocacy organizations, civic and social organizations, business associations, professional organizations, labor unions, and political organizations) primarily engaged in promoting the interests of their members.

Examples Census gives

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 813990

The Census index assigns these 11 activities to this code. If your business matches one, this is your code.

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 813990

To count as a small business for SBA loans and federal contracts under NAICS 813990, your business (including affiliates) must not exceed $13.5 million in average annual receipts. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 9319, 9499), so treat them as a starting point and check the definition.

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

Data last changed November 14, 2026. How this page is built.