Is every business in the U.S. listed in EIN Finder?
Sole proprietorships are not required to obtain EIN numbers; they may use the Social Security numbers of the proprietor for identification, if they wish. Although EIN Finder contains numbers for many proprietors who request EINs, those using Social Security numbers are not included. Also, since some trusts and estates have used different types of numbers in the past, they may not be included. Currently, EINs are being assigned by the IRS to sole proprietors, corporations, limited liability corporations, partnerships, estates, trusts, employer benefit plans, and tax-exempt organizations and we are capturing them as they are filed.
