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10 2 Calculate the Cost of Goods Sold and Ending Inventory Using the Periodic Method Principles of Accounting, Volume 1: Financial Accounting

Delaying cost recoveryCost recovery is the ability of businesses to recover (deduct) the costs of their investments. It plays an important role in defining a business’ tax base and can impact investment decisions. When businesses cannot fully deduct capital expenditures, they spend less on capital, which reduces worker’s productivity and wages. It is sometimes referred to as a “hidden tax,” as it leaves taxpayers less well-off due to higher costs and “bracket creep,” while increasing the government’s spending power. A $10 deduction this year is worth several percent more, in present-value and inflation-adjusted terms, than a $10 deduction next year, and is much more valuable than a $10 deduction a decade from now. All four methods of inventory costing are acceptable; no single method is the only correct method.

  • Another way to look at the problem is to note that the business had to pay $1,078 to replace the $1,000 of inventory.
  • The lower of cost and net realizable value can be applied to individual inventory items or groups of similar items, as shown in Figure 6.15 below.
  • Companies that sell a large number of inexpensive items generally do not track the specific cost of each unit in inventory.

Instead, it is allowable to use a cost flow assumption that varies from actual usage. For this reason, companies tend to select a cost flow assumption that either minimizes profits (in order to minimize income taxes) or maximize profits (in order to increase share value). The FIFO method assumes that the oldest inventory units are sold first, while the LIFO method assumes that the most recent inventory units are sold first. LIFO better matches current costs with revenue and provides a hedge against inflation.

What is your current financial priority?

Our mission is to empower readers with the most factual and reliable financial information possible to help them make informed decisions for their individual needs. The articles and research support materials available on this site are educational and are not intended to be investment or tax advice. All such information is provided solely for convenience purposes only and all users thereof should be guided accordingly.

  • The sum of the nominal deductions will be $1000, but the sum of each year’s present-value deductions will only equal $809 (at a 5 percent discount rate and 2.5 percent inflation).
  • According to the Tax Foundation’s Taxes and Growth Model, the repeal of LIFO would reduce GDP by $11.66 billion after all economic adjustments.
  • When perpetual methodology is utilized, the cost of goods sold and ending inventory are calculated at the time of each sale rather than at the end of the month.
  • Consistency of methods in preparing financial statements enables financial statement users to compare statements of a company from period to period and determine trends.

As discussed in the appendix to Chapter 5, the ending inventory amount will be recorded in the accounting records when the income statement accounts are closed to the Income Summary at the end of the year. To demonstrate the calculations when purchases and sales occur continuously throughout the accounting period, let’s review a more comprehensive example. It is not possible to use specific identification when inventory consists of a large number of similar, inexpensive items that cannot be easily differentiated. Consequently, a method of assigning costs to inventory items based on an assumed flow of goods can be adopted.

Example of Cost Flow Assumptions

Since all of your inventory purchases will end up in COGS by the end of the period, your choice in cost flow assumption does not affect your business’s financials. Since the beginning of the year, Harry has purchased 300 hammers (three orders x 100 units) and still has 250 in inventory, meaning he’s sold 50 units. Under the FIFO cost flow assumption, all 50 units came from the January purchase order. Advantages and disadvantages of LIFO The advantages of the LIFO method are based on the fact that prices have risen almost constantly for decades. LIFO supporters claim this upward trend in prices leads to inventory, or paper, profits if the FIFO method is used.

How to Calculate Weighted Average

In either case, the average cost will provide figures between those of FIFO and LIFO. Also, under LIFO, the ending inventory is recorded at the lowest cost of the three methods because the earliest and lowest prices are allocated to it. On the one hand, many accountants approve of using FIFO because ending inventories are recorded at costs that approximate their current acquisition or replacement cost. This is because the acquisition price of the inventory consistently rises during the year, from $4.10 to $4.70. The gross margin, resulting from the LIFO periodic cost allocations of $9,360, is shown in Figure 10.10. The gross margin, resulting from the FIFO periodic cost allocations of $7,200, is shown in Figure 10.8.

What is Weighted Average Cost (WAC)?

The weighted-average cost method (sometimes referred to as the average cost method) requires a calculation of the average cost of all units of each particular inventory items. As a caveat relating to the average cost method, note that a new average cost must be calculated after every change in inventory to reassess the per-unit weighted-average value of the goods. This laborious requirement might make the premium tax credit use of the average method cost-prohibitive. The specific identification costing assumption tracks inventory items individually so that, when they are sold, the exact cost of the item is used to offset the revenue from the sale. The cost of goods sold, inventory, and gross margin shown in Figure 10.13 were determined from the previously-stated data, particular to specific identification costing.

Weighted Average Cost Method

Then the total amount paid for the shares, $3,000 in this case, is divided by the number of shares acquired over both years, 150, to get the weighted average price paid of $20. A weighted average is most often computed to equalize the frequency of the values in a data set. For example, a survey may gather enough responses from every age group to be considered statistically valid, but the 18 to 34 age group may have fewer respondents than all others relative to their share of the population.

Using the example above and assuming no other revenue or expense items, the closing entry to adjust ending inventory to actual under each inventory cost flow assumption would be as follows. Recall that under the perpetual inventory system, cost of goods sold is calculated and recorded in the accounting system at the time when sales are recorded. In our simplified example, all sales occurred on June 30 after all inventory had been purchased. To demonstrate the calculations when purchases and sales occur continuously throughout the accounting period, let’s review a more comprehensive example. Companies that use the perpetual system and want to apply the average cost to all units in an inventory account use the moving average method. Every time a purchase occurs under this method, a new weighted average cost per unit is calculated and applied to the items.

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