If you already have a company but don't know what code(s) are associated with it, try the following databases.
To look up codes by keyword, use the following sites:
In order to learn more about accounting practices within a specific industry, it's first helpful to learn more about how we classify industries in the United States. There are 2 main classification systems in North America:
After you find a NAICS or SIC code, you can search for articles about accounting practices and limit to only articles related to that industry.
Type "accounting" or another search term into the search box at the top:
Then scroll down the "Advanced Search" page until you see a field to enter a NAICS/Industry code. Entering a number here will narrow your results to only articles related to this industry: