The U.S. Small Business Administration (SBA) is increasing small business size standards for 36 industries in North American Industry Classification System (NAICS) Sector 52, Finance and Insurance, and for two industries in NAICS Sector 55, Management of Companies and Enterprises. In addition, SBA is changing the basis for measuring size from assets to annual receipts for one industry in NAICS Sector 52, namely, NAICS 522293, International Trade Financing. Finally, SBA is deleting NAICS 525930, Real Estate Investment Trusts, from its table of size standards. The U.S. Office of Management and Budget (OMB) included the financial activities formerly included in NAICS 525930 in NAICS 531110, NAICS 531120, NAICS 531130, NAICS 531190, and NAICS 525990. As part of its ongoing comprehensive size standards review, SBA evaluated all receipts based and assets based size standards in NAICS Sectors 52 and 55 to determine whether they should be retained or revised. SBA did not review the 1,500-employee size standard for NAICS 524126, Direct Property and Casualty Insurance Carriers, which it will review in the near future with other employee based size standards. This final rule is one of a series of final rules that will review size standards of industries grouped by NAICS Sectors.