Profit

In the accounting sense of the term, net profit (before tax) is the sales of the firm less costs like as wages, rent, fuel, raw materials, interest on loans and depreciation. Costs such as depreciation and amortization tend to be ambiguous. Within US business, the preferred term for profit tends to be the more ambiguous income.

Gross profit is profit before Selling, General and Administrative costs (SG&A), like depreciation and interest; it is the Sales less direct Cost of Goods (or services) Sold (COGS),

Net profit after tax is after the deduction of either corporate tax (for a company) or income tax (for an individual).

Operating profit is a measure of a company's earning power from ongoing operations, equal to earnings before the deduction of interest payments and income taxes