Cost of Goods Sold
Cost of goods sold (COGS) is the total direct cost of producing or purchasing the goods a business sells during a specific period. It includes raw materials, direct labor, and manufacturing overhead — but not indirect expenses like marketing, rent, or administrative salaries. COGS is subtracted from
Cost of Goods Sold Definition
Cost of goods sold (COGS) is the total direct cost of producing or purchasing the goods a business sells during a specific period. It includes raw materials, direct labor, and manufacturing overhead — but not indirect expenses like marketing, rent, or administrative salaries. COGS is subtracted from revenue to calculate gross profit.
Cost of Goods Sold in Practice — Example
A candle-making business sells $50,000 worth of candles in a quarter. The direct costs to make those candles were: $15,000 in wax and wicks, $5,000 in packaging, $8,000 in production labor, and $2,000 in shipping materials. Total COGS: $30,000. Gross profit: $20,000 ($50,000 − $30,000). The owner now knows she keeps 40 cents of every dollar in gross margin — before covering rent, marketing, and other overhead.
Why Cost of Goods Sold Matters for Your Business
COGS is one of the most important numbers in your business because it directly determines your gross margin — and gross margin determines whether your business model is viable. If your COGS is too high relative to revenue, no amount of sales volume will save you.
Tracking COGS helps you make critical pricing decisions. If materials costs spike 20%, you need to know immediately so you can adjust prices, find cheaper suppliers, or accept lower margins temporarily. Businesses that don't track COGS closely often discover profitability problems too late.
COGS also matters for taxes. It's deducted directly from revenue on your income statement, reducing your taxable income. Accurately tracking all eligible costs ensures you're not overpaying on taxes.
How Cost of Goods Sold Works
COGS Formula:
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COGS = Beginning Inventory + Purchases During Period − Ending Inventory
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What's included in COGS:
| Included ✓ | Not Included ✗ |
|---|---|
| Raw materials | Office rent |
| Direct labor (production) | Marketing expenses |
| Manufacturing overhead | Administrative salaries |
| Shipping to warehouse | Sales team commissions |
| Packaging materials | Software subscriptions |
For service businesses: COGS equivalent is "cost of services" — direct labor hours, subcontractor costs, and materials used to deliver the service.
Gross Margin:
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Gross Margin = (Revenue − COGS) ÷ Revenue × 100
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Cost of Goods Sold vs Operating Expenses
COGS covers the direct costs of producing what you sell. Operating expenses (OpEx) cover everything else it takes to run the business — rent, marketing, admin salaries, utilities, software. Both reduce your profit, but they appear in different sections of the income statement. COGS gives you gross profit. Operating expenses reduce gross profit to operating profit (EBITDA).
FAQ
Q: Does a service business have COGS?
A: Yes, though it's sometimes called "cost of services" or "cost of revenue." For a consulting firm, COGS might include consultant salaries, travel to client sites, and specialized software used for client work.
Q: How can I reduce my COGS?
A: Negotiate better supplier pricing, buy in bulk, reduce waste in production, optimize labor efficiency, or find alternative materials. Even small percentage improvements in COGS can significantly impact profitability at scale.
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