Operating Income

Operating income is the profit a company earns from actually running its business: revenue minus COGS minus operating expenses, before interest and taxes. It ignores how the company is financed and where it is taxed, isolating the performance of the operations themselves.

That isolation is the point. Net income can swing on a refinancing or a tax settlement while the underlying business is unchanged; operating income moves when the business moves. It is the numerator in operating margin and the line most analysts model first, layering financing and tax effects on separately.

GAAP operating income still contains judgment calls — restructuring charges, impairments, and stock-based compensation typically all sit inside it, which is why adjusted figures diverge from it.