Direct costs attributable to the production of goods sold or services provided. It includes raw materials, direct labor, and manufacturing overhead. COGS is subtracted from revenue and varies proportionally with sales volume. Efficient companies maintain lower COGS relative to their revenue. For retailers, COGS represents the purchase price of merchandise; for manufacturers, it includes production costs; for service companies, it may include labor and materials directly tied to service delivery. Managing COGS effectively is critical for maintaining competitive pricing while preserving profit margins. Seasonal fluctuations in raw material costs can significantly impact COGS.