Revenue is defined as the company's actual value normalised to reflect the default currency and corporate actions (e.g. stock splits). Revenue (or Sales) is a corporation's net revenue, generally derived from core business activities. For non-financial companies, the calculation of net revenue (or net turnover) in most markets generally involves subtracting transportation and related operational costs from gross revenue/sales.
Revenue recognition practices vary significantly from market to market, though generally the recording of revenue is based upon sale invoices issued (or anticipated for forecast purposes) during the accounting period.