Cost of Goods Sold

Cost of goods sold (COGS) represents the direct costs attributable to producing or purchasing the goods a company sells during a specific period, including raw materials, direct labor, manufacturing overhead, and freight-in costs. COGS is reported on the income statement and directly determines gross profit (Revenue minus COGS) and gross margin percentage, which is a primary indicator of business health and pricing power. For manufacturing companies, COGS typically represents 50–70% of revenue, while retail businesses see 60–80% and SaaS companies report 15–30%. The IRS requires businesses with inventory to calculate COGS using an acceptable method — FIFO (first-in, first-out), LIFO (last-in, first-out), or weighted average cost — and maintain consistency across periods. Accurate COGS tracking is essential for tax compliance because it determines taxable income, and errors in inventory valuation can trigger audit adjustments with penalties and interest charges. Ecommerce businesses selling on platforms like Shopify and Amazon face particular COGS challenges with multi-channel inventory, landed cost calculations across international shipments, and reconciling marketplace fee deductions. Common COGS errors include misclassifying operating expenses as cost of goods (inflating deductions), failing to account for inventory shrinkage (1.4% average for retailers), and inconsistent overhead allocation. Quadient AP automates the three-way matching of purchase orders, receiving documents, and vendor invoices that underpin accurate COGS recording, while doola's bookkeeping services ensure proper COGS classification and inventory valuation for small businesses, supporting both tax compliance and financial statement accuracy.