What is gross profit and how do you calculate it?
Gross profit is the monetary amount a business earns from its sales after subtracting only the direct cost of buying or producing the goods that were sold (cost of goods sold, or COGS). It is the first and most important profitability checkpoint showing how much money is left to pay rent, wages, utilities, and other operating expenses.
Gross Profit = Net Sales − Cost of Goods Sold (COGS). Expressed as a currency amount rather than a percentage, it measures core trading profit before overhead expenses like rent, payroll, and utilities are deducted to reach net profit.
The gross profit formula and its core components
For an accurate gross profit calculation, both sales revenue and product costs must be taken excluding sales tax (VAT/GST). You also subtract line discounts, document discounts, and customer returns from gross revenue to arrive at true net sales.
Keep in mind that you only deduct the cost of items **actually sold** during the period—not the total value of all inventory purchased and still sitting in your warehouse. The calculation relies on three figures:
- Net sales revenue: Total tax-exclusive sales after deducting customer discounts and sales returns.
- Cost of goods sold (COGS): The total weighted average purchase cost of the specific units sold in that period.
- Gross profit amount: The direct trading earnings left when COGS is subtracted from net sales.
Gross profit vs. revenue, net profit, and gross margin
Revenue (top-line sales) is the total money billed to customers; high revenue alone means nothing if your product costs eat up almost all of it. Gross profit is what remains after paying for the merchandise itself. Once you subtract operating expenses—such as store rent, staff salaries, electricity, and shipping—from gross profit, you get **net profit** (the bottom line).
Meanwhile, **gross profit** is a cash figure (for example, 65,000), whereas **gross margin** expresses that same figure as a percentage of net sales (for example, 32.5%). Tracking both helps you price items properly and cover fixed overhead.
Tracking gross profit and item profitability in GiroPS
For stock-tracked products, GiroPS automatically updates the weighted average cost every time you record a purchase invoice. In the **Sales Analysis** and **Profit & Loss Report** screens, you can view net tax-exclusive sales, cost of goods sold, and exact gross profit for any date range at a glance.
When you also log your everyday operating expenses by category, the Profit & Loss report deducts those expenses from gross profit to show your true net profit. You can also test pricing and overhead targets anytime with the free `profit-margin-calculator` and `break-even-calculator` tools on our website.
Practical scenario
Worked example: calculating monthly gross profit vs. net profit
A hardware store bills 220,000 in tax-exclusive sales during a month. After subtracting 20,000 in promotional discounts and customer returns, Net Sales Revenue comes to 200,000. The weighted average purchase cost (COGS) of the items sold that month totals 135,000. The store's monthly Gross Profit is 200,000 − 135,000 = 65,000 (which equals a 32.5% gross margin). Out of that 65,000 gross profit, the owner pays 40,000 in store rent, wages, and utility bills, leaving 25,000 in net profit.
Frequently Asked Questions
Does unsold inventory sitting in the warehouse reduce my gross profit?
No. Unsold stock remains on your books as inventory value; its purchase cost only enters the gross profit formula as Cost of Goods Sold when the item is actually sold, though excess stock still ties up cash.
Why can a business have high gross profit but still lose money overall?
Because gross profit only accounts for the direct cost of the products sold. If your fixed operating expenses—like rent, payroll, and utilities—exceed your gross profit, the business will end the month with a net loss.
What are the most practical ways to increase gross profit?
Curbing unmeasured discounts, negotiating better supplier purchase prices, reducing stock shrinkage or damage, and steering sales toward higher-margin items directly lift your gross profit.