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Cost of Goods Sold

The Cost of Goods Sold (COGS) is directly attributable costs of products or services sold, (usually materials, labour, and direct production costs). Sales less COGS = gross profit. Effectively the same as cost of sales (COS) which is commonly arrived at via the formula: opening stock + stock purchased - closing stock.

Cost of sales is the value, at cost, of the goods or services sold during the period in question, usually the financial year, as shown in a Profit and Loss Account (P&L). In all accounts, particularly the P&L (trading account) it’s important that costs are attributed reliably to the relevant revenues, or the report is distorted and potentially meaningless. To use simply the total value of stock purchases during the period in question would not produce the correct and relevant figure, as some product sold was already held in stock before the period began, and some product bought during the period remains unsold at the end of it. Some stock held before the period often remains unsold at the end of it too. The formula is the most logical way of calculating the value at cost of all goods sold, irrespective of when the stock was purchased. The value of the stock attributable to the sales in the period (cost of sales) is the total of what we started with in stock (opening stock), and what we purchased (stock purchases), minus what stock we have left over at the end of the period (closing stock).

Updated On: 09.10.04