FIFO, LIFO, average, and others
FIFO, LIFO, average, etc. are cost flow assumptions. In other words, FIFO, LIFO, etc. indicate how the company’s inventory costs flow out of (are removed from) inventory and get reported as the cost of goods sold.
The costs that remain in inventory are reported on the balance sheet. The cost of goods sold are matched on the income statement with the current period’s sales revenues.
FIFO
FIFO is the acronym for first-in, first-out. This cost flow assumption indicates that the company is flowing or removing its first costs (oldest costs) from its inventory and is reporting those oldest costs in the cost of goods sold on the income statement. Assuming continuing inflation, the first/oldest (and therefore the lowest) costs in inventory are the first costs that are matched with the sales revenues occurring in the current accounting period. Therefore, under the FIFO cost flow assumption the more recent, higher costs will remain in inventory and will be reported on the balance sheet as the current asset Inventory.
LIFO
LIFO is the acronym for last-in, first-out. This cost flow assumption indicates that the company is flowing or removing from inventory the costs of the latest goods purchased and including reporting them as the cost of goods sold on the income statement. Assuming continuing inflation, the latest/recent (and therefore the highest) costs in inventory are the first costs being matched with sales revenues in the current accounting period. Under LIFO a company can physically ship the oldest units of product from inventory but remove its recent higher costs and match them with the current period’s sales revenue.
In the U.S., LIFO often results in a company having lower taxable income (since the cost of goods sold will be higher than using FIFO). The lower taxable income often mean less cash is paid in taxes for the current accounting period.