What COGS Includes
Cost of goods sold encompasses all direct costs associated with producing or acquiring the goods that a business sells. For a manufacturer, COGS includes raw materials, direct labor costs for workers who produce the goods, and manufacturing overhead such as factory rent, utilities, and equipment depreciation. For a retailer or wholesaler, COGS is primarily the purchase price of inventory bought for resale, including freight and shipping costs to receive the goods. COGS does not include indirect expenses like administrative salaries, marketing costs, office rent, or interest expense. These are classified as operating expenses or other expenses below the gross profit line. The distinction matters because gross profit, which is revenue minus COGS, measures the profitability of your core product or service before considering overhead and administrative costs.
How to Calculate COGS
The basic formula for calculating COGS is: Beginning Inventory plus Purchases during the period minus Ending Inventory. If your beginning inventory is fifty thousand dollars, you purchase one hundred twenty thousand dollars of additional inventory during the period, and your ending inventory is forty thousand dollars, your COGS is one hundred thirty thousand dollars. This formula works for businesses that sell physical goods. For service businesses, COGS may include direct labor costs for delivering services, contractor payments, and materials used in service delivery. The inventory valuation method you use, whether FIFO, LIFO, or weighted average, affects the COGS calculation because it determines which costs are assigned to the goods sold versus the goods remaining in inventory.
COGS on the Income Statement
COGS appears as the first deduction on the income statement, immediately after revenue. Revenue minus COGS equals gross profit, which is one of the most important metrics for evaluating a business. A declining gross profit margin may indicate rising material costs, inefficient production, or pricing issues. Investors and analysts scrutinize COGS trends because they directly affect profitability. If your COGS grows faster than your revenue, your business is becoming less efficient or facing cost pressures that need to be addressed. HelloBooks tracks COGS automatically when you manage inventory and purchase orders through the system, giving you real-time visibility into your gross margins and how they change over time.
Managing and Reducing COGS
Since COGS directly affects your profitability, managing it effectively is a key business priority. Strategies for controlling COGS include negotiating better prices with suppliers, finding alternative suppliers, reducing waste in the production process, improving manufacturing efficiency, buying in bulk to secure volume discounts, and optimizing inventory levels to reduce carrying costs and spoilage. For service businesses, managing COGS means controlling the cost of delivering services, which may involve improving process efficiency, reducing over-servicing, or negotiating better rates with subcontractors. Regularly comparing your COGS as a percentage of revenue against industry benchmarks helps you understand whether your cost structure is competitive and where improvements can be made.