This table lists small business size standards matched to industries described in the North American Industry Classification System (NAICS), as modified by the Office of Management and Budget effective January 1, 2012. The latest NAICS codes are referred to as NAICS 2012. The size standards are for the most part expressed in either millions of dollars (those preceded by $ ) or number of employees (those without the $ ). A size standard is the largest that a concern can be and still qualify as a small business for Federal Government programs. For the most part, size standards are the average annual receipts or the average employment of a firm. How to calculate average annual receipts and average employment of a firm can be found in 13 CFR 121.104 and 13 CFR 121.106, respectively. SBA also includes the table of size standards in the Small Business Size Regulations, 13 CFR 121.201. This table includes size standards that have changed since the last publication of 13 CFR 121.