DEFINITION of Pretax Operating Income - PTOI

Pre-tax operating income (PTOI) is an accounting term that refers to the difference between a company's operating revenues (from its primary businesses) and its direct expenses (except taxes) tied to those revenues. It is a measure of a company’s operating efficiency, and is calculated as:

PTOI = Gross Revenue – Operating Expenses – Depreciation

BREAKING DOWN Pretax Operating Income - PTOI

Pretax operating income (PTOI) is a company’s operating income generated from its business activities, before taxes are factored in. PTOI excludes non-operating forms of revenue and non-recurring transactions such as capital gains on assets and profits from unrelated investments in other companies (unless its main business is investment in other companies). For instance, it excludes legal expenses, investments and rents received, which are forms of non-core business income.

It is one of the best barometers for the basic health of a business, because it measures both the revenue and expenses associated with the company's primary business activities. While taxes must ultimately be subtracted from this amount, viewing the company's primary operations on a pretax basis gives its shareholders, analysts, and decision-makers a clearer picture into the aspects of profitability that the company can control. Also excluding taxes helps to effectively compare the financial health of similar companies, given that these companies may have different capital structures which elicits different tax rates, even if the companies have the same revenues.

It's also important to note that the PTOI helps eliminate a false sense of security or panic associated with certain infrequent occurrences like lawsuits, gains or losses on currency exchanges, or the appreciation of capital assets. As these are included in the final accounting of a company's profit or loss, they can create a false sense of security or peril. However, the PTOI is a non-GAAP measure, so what is included and excluded for its derivation differs by company and industry.

Another metric that excludes earnings that occur outside of a business's general operations is the Earnings Before Interest and Taxes (EBIT). The EBIT is essentially the pre-tax operating income a firm would earn if it had no debt. Its calculation excludes interest expenses, interest income, and non-operating income/loss.

The pre-tax operating margin, a measure of operating profitability, is calculated by dividing the pre-tax operating income by revenues generated by a company. This margin allows investors to understand true business costs of running a company. To calculate the after-tax operating income (ATOI), multiply the PTOI by one minus the corporate income tax on operational income.