Proprietors' income is the total income earned by proprietors, both farm and nonfarm business owners. According to the BEA, proprietor income provides a comprehensive and consistent economic measure of the income earned by all U.S. unincorporated farm and nonfarm businesses. In addition, the nonfarm measure is a particularly useful analytical indicator of the health of noncorporate businessesand provides both a complement and contrast to the NIPA measure of corporate profits.