Explanation:

Operating surplus is an accounting concept used in national accounts statistics (such as United Nations System of National Accounts (UNSNA)) and in corporate and government accounts. It is the balancing item of the Generation of Income Account in the UNSNA.

It may be used in macro-economics as a proxy for total pre-tax profit income, although entrepreneurial income may provide a better measure of business profits. According to the 2008 SNA, it is the measure of the surplus accruing from production before deducting property income, e.g., land rent and interest.