Gross profit is a dollar subtotal on the income statement, net sales for a period less the cost of the goods or services sold in that same period. Operating expenses, interest and income tax have not come out yet, and all three sit below that subtotal. It is an amount, not a percentage, though gross margin is used both for that amount and for the ratio built on it.
The Formula
Both terms cover the same period, and both come off the same statement.
gross profit = net sales - cost of goods soldNet sales is gross sales less the three deductions recorded against them, returns, allowances and discounts, and how each one gets recorded is set out in net sales. Cost of goods sold is what it cost to buy or make the units that were sold in the period, so it follows what left the shelf rather than what was bought or produced.
A business that sells services rather than goods runs the same subtraction on a cost of services, which Regulation S-X, the rule for statements filed with the Commission, lists at caption 2 among the costs and expenses applicable to sales and revenues alongside the cost of tangible goods sold (17 CFR 210.5-03). Which costs a firm is entitled to put inside that figure rather than below it is a live judgment, and the room the same caption leaves is worked through in overhead.
A Worked Example
Say a merchandising client closes a quarter on the amounts below, with subtracted amounts shown in parentheses.
Net sales 386,000
Cost of goods sold (241,500)
Gross profit 144,500Nothing below the cost of the goods has come out yet. Selling and administrative costs, interest and tax all sit further down the statement.
Where the Figure Lands in a Firm’s Work
The corporate return captions it outright. Form 1120 reaches gross profit at line 3 by subtracting cost of goods sold at line 2 from the balance at line 1c (IRS, Form 1120, 2025), and that balance is gross receipts or sales less returns and allowances rather than net sales as a statement defines it, a difference set out in net sales. The cost at line 2 is not entered freehand either. It is figured on Form 1125-A and carried across from that form’s line 8 (IRS, Form 1125-A, Rev. November 2024), whose arithmetic is worked through in raw materials. The sole proprietor return reaches the same subtotal at line 5 of Schedule C, taking cost of goods sold at line 4 off the line 3 balance, then adding other income at line 6 to arrive at gross income at line 7 (IRS, Schedule C (Form 1040), 2025), a chain set out in income vs revenue.
The statement side carries no such requirement. Neither gross profit nor operating income is a prescribed caption for a company filing with the Commission (17 CFR 210.5-03), a point set out in the income statement. So on a client with inventory you will produce this figure for the return whether or not the statements you hand that client ever show it, and on a service client with no cost of sales there is nothing to deduct at that step at all, a case set out in multi-step income statement.
Gross Profit and Gross Margin
Gross margin names two things. It usually means the percentage, gross profit over net sales, but the same words also name the dollar subtotal that ratio is built on. The SEC’s guide to financial statements describes the line that subtracts the costs of sales from net revenues as a subtotal called gross profit, or sometimes gross margin (SEC, Beginners’ Guide to Financial Statements). Apple captions that dollar line Gross margin on the face of its income statement and reports a gross margin percentage as a separate figure (Apple Inc., Form 10-K, fiscal 2025). Which of the two a statement means has to be read off the statement itself, and the full ladder of margins is in net profit margin.
What Gross Profit Is Not
Gross Sales
Gross sales is the total billed for the period before any deduction at all, which sits several subtractions above this subtotal, and what belongs in it is in gross sales.
Net Income
Net income, also called net profit, is the bottom line, reached only after operating expenses, interest and income tax expense have also come out, and the order those run in is in net income.
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