Gross Profit vs Net Profit: One Month on Schedule C
Written by Sampsa Vainio
Gross profit is what's left after you subtract the cost of making or buying what you sell. Net profit is what's left after every other cost comes out too, from rent and advertising to insurance. Gross profit tells you whether your product makes money. Net profit tells you whether your whole business does. Run one small business's month down the income statement and a healthy 40% gross margin can still land at a 6% net margin. If you file a Schedule C, you already report both: gross profit on line 5, net profit on line 31.
What gross profit and net profit actually mean
Gross profit is revenue minus the cost of goods sold (COGS), the direct cost of the products you sold: raw materials, the goods themselves if you resell, and the direct labor that makes them. On the IRS Schedule C, this is line 5: gross receipts minus returns, minus cost of goods sold from Part III (Schedule C, line 5).
Net profit is what remains after you also subtract every operating cost: rent, advertising, software, insurance, contract help, utilities, and the rest. On Schedule C it is line 31, "Net profit or (loss)", the number that flows to your Form 1040 and Schedule SE (Schedule C, line 31). Accountants also call it the "bottom line" because it sits at the bottom of the income statement.
Between the two sits operating profit: gross profit minus operating expenses, before interest and income tax. A sole proprietor's Schedule C has no separate interest-and-tax layer, so its tentative profit on line 29 is effectively operating profit. A corporation's income statement keeps going: operating profit minus interest, minus corporate income tax, equals net profit.
One business's month, walked down the income statement
Take Maya, who roasts and sells coffee as a sole proprietor. Here is one month, each subtotal mapped to its Schedule C line.
| Income statement step | Schedule C line | Amount |
|---|---|---|
| Gross receipts (sales) | Line 1 | $52,000 |
| Less: returns and allowances | Line 2 | ($2,000) |
| Net sales | Line 3 | $50,000 |
| Less: cost of goods sold | Line 4 | ($30,000) |
| Gross profit | Line 5 | $20,000 |
| Less: operating expenses | Line 28 | ($16,500) |
| Less: home office | Line 30 | ($500) |
| Net profit | Line 31 | $3,000 |
The cost of goods sold, $30,000, is the green coffee beans, the bags and labels, and the wages of the person who runs the roaster. That is 60% of net sales, which leaves a gross profit of $20,000, or a 40% gross margin. On the product alone, Maya's business looks healthy.
Then the operating expenses arrive. These are the costs of running the business that are not tied to a specific bag of coffee:
| Operating expense | Amount |
|---|---|
| Rent | $3,500 |
| Contract labor (part-time help) | $3,000 |
| Supplies (cups, filters, cleaning) | $2,400 |
| Utilities | $1,300 |
| Advertising | $1,200 |
| Office expense | $900 |
| Legal and professional | $900 |
| Car and truck | $800 |
| Taxes and licenses | $700 |
| Travel | $600 |
| Deductible meals | $400 |
| Repairs and maintenance | $300 |
| Total (line 28) | $16,500 |
Subtract the $16,500 of operating costs and the $500 home office deduction from the $20,000 gross profit, and net profit is $3,000. That is a 6% net margin. The same month that looked like 40% at the gross line is a thin 6% at the bottom line. Nothing went wrong; the gap is every cost that a gross-profit figure ignores. Tracking those costs is exactly what an expense tracker is for, because they are the difference between the two numbers.
Gross profit vs net profit at a glance
| Gross profit | Net profit | |
|---|---|---|
| Formula | Net sales − cost of goods sold | Gross profit − all other costs |
| What it subtracts | Only direct product costs | Operating costs, interest, and (for corporations) income tax |
| Question it answers | Does my product make money? | Does my business make money? |
| Schedule C line | Line 5 | Line 31 |
| Maya's month | $20,000 (40% margin) | $3,000 (6% margin) |
| Also called | Gross income (Schedule C line 7 adds other income) | Bottom line, net income |
The two margins move for different reasons. Gross margin falls when your suppliers raise prices or you discount too hard. Net margin can fall even when gross margin holds steady, because rent went up or you hired help. Watching both tells you where a squeeze is coming from.
Which number should you watch, and when
Use gross profit to judge pricing and production. If your gross margin is shrinking, the problem is in what you sell or what it costs to make: a supplier increase, a pricing mistake, or too many markdowns. No amount of cutting the office budget fixes a broken gross margin.
Use net profit to judge the whole business. It is the number that decides whether you can pay yourself, reinvest, or owe tax. For a sole proprietor, line 31 is also the starting point the IRS uses: it flows to Schedule 1 and to Schedule SE, where self-employment tax is calculated on 92.35% of it. A profit-and-loss report that shows income and expenses side by side gives you both margins in the same view.
One caution: net profit is not the cash in your bank account. You can post a $3,000 net profit and still be short on cash if a client paid late or you bought inventory you have not sold yet. Profit and cash flow answer different questions, which is why cash flow and profit can point in opposite directions in the same month.
Common mistakes people make with gross and net profit
Confusing gross profit with gross margin. Gross profit is a dollar amount ($20,000). Gross margin is the ratio (gross profit ÷ net sales × 100 = 40%). Two businesses can share the same $20,000 gross profit and have very different margins if one did $50,000 in sales and the other did $200,000. Report the dollars for size, the margin for health.
Treating net profit as take-home pay. For a sole proprietor, line 31 is before income tax and self-employment tax. Maya's $3,000 net profit still owes roughly 15.3% self-employment tax plus income tax before any of it is hers. The qualified business income deduction and other adjustments change the taxable figure again. Net profit is the business's result, not your paycheck.
Mixing up net profit and net income. For most small businesses these mean the same thing: the bottom line after all costs. "Net income" shows up more in corporate statements and on personal returns; "net profit" is the wording on Schedule C. Do not assume they are different figures just because the label changed.
Letting COGS and operating expenses blur. Only the direct cost of what you sold belongs in cost of goods sold. Rent and advertising are operating expenses, below the gross-profit line. Put an operating expense into COGS and you understate gross profit; do the reverse and you overstate it. Clean expense categories keep the line in the right place.
Frequently asked questions
Is gross profit the same as gross margin? No. Gross profit is a dollar amount (net sales minus cost of goods sold). Gross margin is that profit expressed as a percentage of net sales. In Maya's month, gross profit is $20,000 and gross margin is 40%.
Can gross profit be positive while net profit is negative? Yes, and it is common. If operating expenses exceed gross profit, net profit turns into a loss even though each product sold at a profit. That is the signal to cut overhead or raise prices, not to stop selling.
Where do I find gross profit and net profit on my tax return? On Schedule C (Form 1040), gross profit is line 5 and net profit or loss is line 31. Cost of goods sold is computed in Part III and carried to line 4.
Is net profit the money I actually keep? Not directly. For a sole proprietor, net profit is calculated before income tax and self-employment tax, and it is not the same as cash in the bank. It is the business's result for the period, which you then pay tax on and draw from.
What is a good net profit margin for a small business? It varies widely by industry, so compare yourself to businesses like yours rather than to a single benchmark. The more useful habit is tracking your own gross and net margins month to month and asking why either one moved.
Key takeaways
- Gross profit is net sales minus cost of goods sold. It measures whether the product makes money. On Schedule C it is line 5.
- Net profit is gross profit minus every other cost. It measures whether the business makes money. On Schedule C it is line 31, the bottom line.
- A strong gross margin can still leave a thin net margin. Maya's 40% gross margin became a 6% net margin once $17,000 of operating and home-office costs came out.
- Watch gross profit for pricing and production; watch net profit for the whole business. A falling gross margin and a falling net margin have different causes and different fixes.
- Net profit is not cash and not take-home pay. For a sole proprietor it comes before income and self-employment tax, and it can differ from your bank balance.
Every operating cost between gross profit and net profit starts as a receipt. Capture and categorize them as they happen and both margins stay current instead of arriving as a shock at year-end. Get Started with SparkReceipt to keep the numbers behind the two figures in one place.