Operating income (REX): Definition, issues and explanations

Operating Income (REX) is a term used in management and finance to designate the result obtained by a company solely from its current activity, without taking into account financial, exceptional or tax items.

It is an indicator found in the details of the income statement and reflects the real profitability of the company's commercial and industrial operations.

REX is calculated by subtracting operating expenses (costs linked to production, purchases, salaries, overheads, etc.) from operating income (sales and other revenues linked to the core business).

Utilizing Operating Profit allows you to accurately assess a company's operational performance, independent of financial or exceptional influences. This helps to understand whether the core business is profitable enough to cover its expenses.

OER is essential for internal decision-makers (executives, managers) who wish to analyze the economic health of their day-to-day operations in isolation.

In addition, this indicator is invaluable for investors and financial partners, as it offers a clear view of the profitability of current operations before taking into account debts, taxes or exceptional gains.

Operating income is calculated from accounting data taken from the income statement. It results from the difference between operating revenues and operating expenses.

Operating revenues mainly include sales, operating subsidies and other income related to the core business.

Operating expenses include purchasing costs, production costs, overheads, salaries, social security charges and other expenses directly linked to day-to-day management.

This is calculated according to the formula: Operating income = Operating income - Operating expenses.

Operating Income offers several significant advantages. It offers a clear and precise view of profitability linked to the core business, enabling better strategic decision-making.

By isolating current operations, it facilitates performance analysis by excluding the effects of financial or exceptional events, making evaluation more reliable.

However, this result also has limitations: it does not take into account financial expenses or income, nor tax impacts, which can give an incomplete picture of the company's overall health.

A classic example is that of an industrial company wishing to measure the profitability of its production without taking into account bank interest or taxes.

An SME using REX will be able to identify whether its core business is profitable before considering external financing or exceptional results. This makes it possible to adjust production costs or optimize resource management.

In a business valuation context, REX is often used to value the company based on operational performance, particularly in divestiture or fund-raising approaches.

• Linguee : Linguistic resource for the translation and understanding of the term Operating Income.
• Compta-Facile: Detailed definition and method of calculating Operating Income.
• Evaluation-Enterprise: Methods for valuing a company based on Operating Income.
• Propulse by CA: Accounting explanations of Operating Income.
• Qonto: Financial glossary addressing the concept of Operating Income.