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INVENTORY ACCOUNTING METHODS 1
Inventory Accounting Methods
Intermediate Accounting ACCT-301-B01
Liberty University
INVENTORY ACCOUNTING METHODS 2
Abstract
This paper discusses the different ways inventory can be accounted for by businesses and also
addresses the different cost allocation methods allowed according to GAAP and IFRS. Also
included is information on how the choice of inventory cost allocation method effects everything
from the income reported on financial statements to the tax liability of a company.
INVENTORY ACCOUNTING METHODS 3
Inventory Methods
Inventory Management Systems and Methods
Inventory management is an important part of running a business. Having an accurate
count of inventory along with how you record the inventory is important, especially when
preparing financial documents. Inventory is considered an asset on the balance sheet, but
information that is related to inventory, such as cost of goods sold, are also tracked on other
financial reports such as the income statement. This data is factored into the information that is
used when determining a company’s fiscal health. The type of inventory cost method a company
chooses can have a significant impact on reported profits and tax liability. Without proper
utilization of inventory management systems multiple issues could arise including misstated
gross profits and net income.
According to the article The Changing LIFO-FIFO Dilemma and its Importance to the
Analysis of Financial Statements, by Kurt R. Jesswein, no other factor effects the analysis of
financial statements more than the method that is used to allocate costs between the inventory
that is sold and the inventory remaining unsold at the end of the reporting period. How inventory
is treated has an effect on the financial statements produced by companies which is why it is
important for management to make an informed decision about which type of inventory cost
allocation system the company uses. Management needs to take into account what is more
important to them, income tax liability limitation, higher profits for calculation of higher bonuses
for managers, or neutrality where income tax liability and higher profits for determination of
bonuses are not important.
INVENTORY ACCOUNTING METHODS 4
Perpetual Inventory System
In a perpetual inventory system, inventory is continually adjusted to account for
positive and negative changes in the inventory count. The inventory account is adjusted each
time an inventory purchase or sale is made. This type of method requires an electronic inventory
system, such as the barcodes that would be used in a grocery store, in order to continually update
the inventory based on the sales made (“Investopedia stock analysis: Understanding Periodic Vs.
Perpetual Inventory”, 2015). Keeping a continual up to date count of inventory makes this
method more accurate when data on inventory is needed at any given time. This is due to the
fact that inventory counts are continually updated instead of only updated at the end of the
accounting period, which would be the case in the inventory system we discuss next.
Periodic Inventory System
A periodic inventory system differs from the perpetual inventory system in that
inventory is not adjusted continually in a periodic system. As the name implies, inventory is
adjusted at the end of a preset period established by the company. Even though in this inventory
system the inventory account is not continually adjusted to account for sales and purchases of
inventory, this information is continually accounted for in other asset and liability accounts such
as purchases, sales, accounts payable, and accounts receivable. Due to the fact that inventory is
not constantly monitored, it is necessary for a physical count of the inventory remaining to be
made at the end of the preset accounting period. Once the inventory count is made, the inventory
account is adjusted to reflect the purchases and sales that occurred during the period as well as
the actual count of inventory at the end of the accounting period. Because this system does not
INVENTORY ACCOUNTING METHODS 5
continually track inventory coming in and out, inventory counts are not accurate and up to date
throughout the period.
Businesses that sell lots of small items may choose this type of inventory system in order
to simplify their inventory accounting system. This type of system is also more suitable for
businesses that do not want to spend the money on an electronic system and employees that
would be needed to maintain and run the system that would be necessary for a perpetual
inventory system (“Investopedia stock analysis: Understanding Periodic Vs. Perpetual
Inventory”, 2015).
Cost Flow Methods
Average Cost Method
The average cost cash flow method calculates the cost of the inventory utilizing a
weighted cost average of all of the inventory purchased and sold during a specific period. This
method does not provide any tax liability benefits because the inventory cost is determined based
on the average cost of all inventory and does not reflect trends of inventory costs rising or
declining (Bragg, 2005, pg. 119). This type of system is more beneficial to companies with
small inventories that do not want to deal with planning for their tax liability (Bragg, 2005, pg.
119).
Last In First Out (LIFO)
The last in first out (LIFO) method assumes that the last items added to the
inventory are the first items deducted from the inventory when a sale occurs. This method has
tax advantages during times when costs are rising and is the method that most closely relates to
INVENTORY ACCOUNTING METHODS 6
the actual physical flow of inventory (Muller, 2011, pg. 18). This method reduces income tax
liability by reducing reported profits but also has a positive effect on the reporting of cash flow.
Under the LIFO method, cost of goods sold would be higher and profits would be lower.
Companies whose management receive bonuses based on reported income would likely stay
away from this type of inventory cost allocation method. This method is popular with companies
that have high profits and want to limit their tax liability on theses profits, such as oil companies.
The LIFO method has not always been allowed. Prior to 1939, average cost and
FIFO were the only two inventory cost allocation methods that were allowed for determination
of income tax liability. During the 1930’s there was a push for the LIFO method to be approved
for income tax purposes. The argument was that the FIFO method was inaccurately inflating
profits for business thereby causing companies to pay taxes on profits that were not actually
realized. One of the main selling points for LIFO was the tax policies of the administration
leading up to this point. It was argued that these tax policies actually slowed and hindered growth
and the LIFO would in fact change that by allowing the tax limitations on business to fuel
growth. LIFO was added as an approved valuation method with the Revenue Act of 1939
(Lessard, 2007).
Due to the income tax liability reduction possible from the LIFO method, the IRS
requires that a company that uses LIFO for income tax calculation must also use it in all of their
financial reporting. This rule also limits the use of LIFO to companies with whom LIFO
conforms most closely to their industries best accounting practices (Adams & Troutman, 2012).
This requirement prevents companies from using LIFO to reduce income tax and then use FIFO
to show higher profits on its financial statements. In recent years, there has been a push for LIFO
to be eliminated. The elimination of LIFO could create additional tax liabilities for companies
INVENTORY ACCOUNTING METHODS 7
that would assist with paying down the United States deficit. This push gained momentum
during the time oil companies were making record profits but they were using LIFO to reduce
their income tax liability.
First In First Out (FIFO)
The first in first out (FIFO) method works under the assumption that the first
items added to inventory are also the first items deducted from the inventory when a sale occurs.
This method has more tax advantages than LIFO during times when costs are declining and most
closely matches current cost with current revenues (Muller, 2011, pg. 18). Declining inventory
costs may seem unusual, however, in industries where there is extensive price competition or
continual innovation that leads to a flood of new and more innovating products flooding the
market, price reductions for new inventory is likely (Bragg, 2005, pg. 110).
The FIFO method is more beneficial to company’s whose inventory prices continue to
fall. For example, a company that deals in electronics would benefit from this costing method
because new electronics start off with high prices and then the prices decline as new products
enter the market. Each reduction in inventory is eliminating the higher priced inventory items
first leaving the less expensive inventory items. This method is best for companies whose
inventory prices will continue to fall, however, it is also beneficial for companies whose
inventory prices continue to rise. Companies that are more concerned with reporting higher
profits in lieu of limiting their income tax liability would chose this method of cost allocation for
their inventory.
LIFO vs. FIFO
INVENTORY ACCOUNTING METHODS 8
LIFO and FIFO would be considered polar opposites with regards to inventory cost
allocation (Jesswein, 2010, pg. 53). These two methods can cause the greatest differences in
financial figures reported on the balance sheet and income statement (Jesswein, 2010, pg. 53).
Many companies tax liability concerns drive their choice for the inventory cost method they
choose. However, management of companies where bonuses are dependent on the amount of
income they have per their financial statements may be tempted to choose an inventory cost
method that shows higher profits instead of one that reduces the companies tax liability.
Conflicts could arise between management and stockholders on the inventory cost method that is
used. The LIFO method would lead to an increase in cash flow, which would be preferred by
stock holders, and FIFO would lead to an increase in reported profits, which would be preferred
by management that receives bonuses based on the company’s profits (Zhang, Shi, Gao, & Wang,
2014).
LIFO and FIFO are opposites when it comes to how they each effect these two variables.
LIFO is typically chosen by companies wanting to lessen their income tax liability and FIFO is
typically chosen by companies that want to show higher profits on their financial statements.
While LIFO does reduce income tax liability and result in higher cash flows, it also reports lower
earnings. This is due to the inventory that is remaining at the end of the reporting period having
their value understated on the balance sheet. Because LIFO results in an understated value of
inventory, companies that use LIFO must also report the extent to which their inventory is
undervalued relative to them using FIFO or the average cost methods (Jesswein, 2010, pg. 54).
Businesses must weigh these factors to determine if LIFO is really the best system for them to
use.
INVENTORY ACCOUNTING METHODS 9
Generally Accepted Accounting Principles and International Financial Reporting
Standards
In the United States companies must report their financial information in compliance with
the Generally Accepted Accounting Principles (GAAP). GAAP is a set of guidelines created by
the Financial Accounting Standards Board that companies are required to follow with measuring
and reporting information in their financial reports (Spiceland, Sepe, Nelson, & Thomas, 2016,
pg. 8). Under GAAP, companies are allowed to use three different cost flow methods for their
inventory; the average cost method, the last in first out (LIFO) method, and the first in first out
(FIFO) method.
The International Financial Reporting Standards (IFRS) were created by the International
Accounting Standards Committee in order to provide standards for industrialized countries to use
when reporting their financial information. The IFRS and GAAP do have many similarities but
they also have many differences which would make a conversion to IFRS for American
businesses more difficult. One of the ways in which GAAP and IFRS differ, is in the inventory
costing methods that are allowed under each set of standards. Under IFRS, LIFO is not an
allowed inventory costing method, however, it is an allowed method under GAAP.
There has been a push in the last decade or so for IFRS and GAAP to converge into one
set of universal standards. With the continuing increase in globalization, it is believed that
American companies will have to eventually adopt IFRS in order to remain in the international
market (Sedki, Smith, & Strickland, 2014). If the standards were to be converged, then LIFO
would likely no longer be an option for companies to use (“Investopedia stock analysis: How
does inventory accounting differ between GAAP and IFRS?”, 2015). If LIFO were to be
eliminated companies that switched over to FIFO may have immediate additional tax liabilities
INVENTORY ACCOUNTING METHODS 10
that would have to be paid. The elimination of LIFO could be potentially detrimental to
companies while simultaneously being beneficial to the U.S. with the immediate increase in
taxes due.
Conclusion
The way businesses value their inventory is very important. The allocation method
chosen by a company can have a profound effect on income tax liability and reported profits. It is
important to for businesses to weigh all of the benefits and detriments of each valuation method
in order to determine which method works best for their company. LIFO and FIFO have an
opposite effect on a company’s financial reporting and income tax liability. While LIFO does
lead to a reduction in income tax liability and an increase in cash flow, it does reduce the amount
of profit recorded. On the other side, FIFO increases the amount of tax liability but also increases
the amount of profit reported by the company. The average cost system is a more neutral system.
This is more beneficial to companies that do not want to plan ahead for taxes but are also not as
concerned about reported profits for management bonus purposes.
If GAAP and IFRS end up converging as some would like, then LIFO would likely be
eliminated at that point. With LIFO no longer an option, businesses that previously used LIFO
would have to convert to FIFO. This can lead to a host of issues for companies. One major issue
would be the sudden increase in tax liability and that the companies would suddenly be in
violation of the IRS conformity rule (Bloom & Cenker, 2008). Even if GAAP and IFRS do not
vu?
INVENTORY ACCOUNTING METHODS 11
converge, LIFO may still not be safe. Companies should consider all of these factors when
determining which inventory method they will use.
INVENTORY ACCOUNTING METHODS 12
References
Adams, M.T. & Troutman, C.S. (2012). Avoiding missteps in the LIFO conformity rule. Journal
of Accountancy online. Retrieved from
http://www.journalofaccountancy.com/issues/2012/aug/20125571.html
Bragg, S.M. (2005). Inventory Accounting: A Comprehensive Guide. Hoboken, NJ: Wiley.
Retrieved from
http://web.a.ebscohost.com.ezproxy.liberty.edu/ehost/ebookviewer/ebook/bmxlYmtfXzE
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Bloom, R. & Cenker, W.J. (2008). The death of LIFO. Journal of Accountancy online. Retrieved
from http://www.journalofaccountancy.com/issues/2009/jan/deathoflifo.html
Investopedia stock analysis: How does inventory accounting differ between GAAP and IFRS?
(2015). Chatham: Newstex. Retrieved from http://ezproxy.liberty.edu/login?
url=http://search.proquest.com.ezproxy.liberty.edu/docview/1682022270?
accountid=12085
INVENTORY ACCOUNTING METHODS 13
Investopedia stock analysis: Understanding periodic vs. perpetual inventory (2015). Chatham:
Newstex. Retrieved from http://ezproxy.liberty.edu/login?
url=http://search.proquest.com.ezproxy.liberty.edu/docview/1684294893?
accountid=12085
Jesswein, K. R. (2010). The changing LIFO-FIFO dilemma and its importance to the analysis of
financial statements. Academy of Accounting and Financial Studies Journal, 14(1), 53+.
Retrieved from http://p2048-ezproxy.liberty.edu.ezproxy.liberty.edu/login?
url=http://go.galegroup.com.ezproxy.liberty.edu/ps/i.do?
p=AONE&sw=w&u=vic_liberty&v=2.1&it=r&id=GALE
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Lessard, S. C. (2007). GIVING LIFE TO LIFO: ADOPTION OF THE LIFO METHOD OF
INVENTORY VALUATION BY THE INCOME TAX CODE. The Tax Lawyer, 60(3),
781-806. Retrieved from http://ezproxy.liberty.edu/login?
url=http://search.proquest.com.ezproxy.liberty.edu/docview/197662277?
accountid=12085
Muller, M. (2011). Essentials of Inventory Management. New York: AMACOM. Retrieved from
http://web.a.ebscohost.com.ezproxy.liberty.edu/ehost/ebookviewer/ebook/bmxlYmtfXzM
2MjIzNV9fQU41?sid=682e6721-ce78-4088-99e2-
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Sedki, S. S., Smith, A., & Strickland, A. (2014). Differences and similarities between IFRS and
GAAP on inventory, revenue recognition and consolidated financial statements. Journal
of Accounting and Finance, 14(2), 120-123. Retrieved from
http://ezproxy.liberty.edu/login?
url=http://search.proquest.com.ezproxy.liberty.edu/docview/1535033346?
accountid=12085
Spiceland, J.D., Sepe, J.F., Nelson, M.W., & Thomas, W.B. (2016). Intermediate Accounting.
New York, NY: McGraw-Hill Education
Zhang, Y., Shi, C., Gao, P., & Wang, F. (2014). Repealing the LIFO inventory accounting choice?
A review of LIFO and inventory management. American Journal of Operations Research,
4(6), 351-364. doi:10.4236/ajor.2014.46034
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