Chapter 07 – Reporting and Interpreting Cost of Goods Sold and Inventory
7-3
Chapter Take-Aways
1. Apply the cost principle to identify the amounts that should be included in inventory and the
expense matching principle to determine cost of goods sold for typical retailers, wholesalers,
and manufacturers.
Inventory should include all items owned that are held for resale. Costs flow into inventory when
goods are purchased or manufactured. They flow out (as an expense) when they are sold or disposed
of. In conformity with the expense matching principle, the total cost of the goods sold during the
period must be matched with the sales revenue earned during the period. A company can keep track
of the ending inventory and cost of goods sold for the period using (1) the perpetual inventory system,
which is based on the maintenance of detailed and continuous inventory records, and (2) the periodic
inventory system, which is based on a physical count of ending inventory and use of the cost of goods
sold equation to determine cost of goods sold.
2. Report inventory and cost of goods sold using the four inventory costing methods.
The chapter discussed four different inventory costing methods used to allocate costs between the
units remaining in inventory and to the units sold, and their applications in different economic
circumstances. The methods discussed were FIFO, LIFO, average cost, and specific identification.
Each of the inventory costing methods conforms to GAAP. Public companies using LIFO must
provide note disclosures that allow conversion of inventory and cost of goods sold to FIFO amounts.
Remember that the cost flow assumption need not match the physical flow of inventory.
3. Decide when the use of different inventory costing methods is beneficial to a company.
The selection of an inventory costing method is important because it will affect reported income,
income tax expense (and hence cash flow), and the inventory valuation reported on the balance sheet.
In a period of rising prices, FIFO normally results in a higher income and higher taxes, than LIFO; in
a period of falling prices, the opposite occurs. The choice of methods is normally made to minimize
taxes.
4. Report inventory at the lower-of-cost-or-market (LCM).
Ending inventory should be measured based on the lower of actual cost or replacement cost (LCM
basis). This practice can have a major effect on the statements of companies facing declining costs.
Damaged, obsolete, and out-of-season inventory should also be written down to their current
estimated net realizable value, if below cost. The LCM adjustment increases cost of goods sold,
decreases income, and decreases reported inventory in the year of the write-down.
5. Evaluate inventory management using the inventory turnover ratio.
The inventory turnover ratio measures the efficiency of inventory management. It reflects how many
times average inventory was produced and sold during the period. Analysts and creditors watch this
ratio because a sudden decline may mean that a company is facing an unexpected drop in demand for
its products or is becoming sloppy in its production management.
6. Compare companies using different inventory methods.
These comparisons can be made by converting the LIFO company’s statements to FIFO. Public
companies using LIFO must disclose the differences between LIFO and FIFO values for beginning
and ending inventory. These amounts are often called the LIFO reserve. The beginning LIFO reserve
minus the ending LIFO reserve equals the difference in cost of goods sold under FIFO. Pretax income
is affected by the same amount in the opposite direction. This amount times the tax rate is the tax
effect.