Financial Accounting: Chapter 7 – Inventory (Study Notes)

Inventory in Financial Accounting

Introduction

Inventory is a critical component of financial accounting, especially for companies involved in selling or manufacturing goods. This chapter explores the classification, measurement, and management of inventory, as well as the impact of inventory systems and valuation methods on financial statements.

Importance and Classification of Inventory

Significance of Inventory

• Inventory represents goods purchased for resale or for use in manufacturing products to be sold to customers.

• For retailers and manufacturers, inventory is a significant current asset and often the largest asset to be converted into cash within the next year.

• Effective inventory management is essential for profitability and liquidity.

Management’s Objectives Regarding Inventory

• Sell inventory at a higher price than its purchase cost.

• Select appropriate suppliers to ensure quality and cost-effectiveness.

• Determine necessary inventory levels to avoid stockouts and excess holding costs.

• Set prices to achieve desired profit margins.

• Protect inventory from damage, theft, and obsolescence.

Inventory Classifications

• Manufacturers classify inventory as:

  • Raw materials: Basic inputs for production.

  • Work-in-process: Goods in the process of being manufactured.

  • Finished goods: Completed products ready for sale.

• Merchandisers/Retailers classify inventory as finished goods purchased for resale.

Inventory Ownership

Determining Inventory Ownership

• Ownership is based on who holds the title to the goods.

• Key considerations:

  • FOB shipping point: Buyer owns inventory once it leaves the seller’s premises.

  • FOB destination: Buyer owns inventory when it arrives at the buyer’s premises.

  • Consignment arrangements: Goods held by a consignee remain the property of the consignor until sold.

Inventory Systems

Cost of Goods Available for Sale (COGAS)

• At the start of an accounting period, a company has beginning inventory.

• Purchases during the period are added to beginning inventory to determine COGAS:

$\text{COGAS} = \text{Beginning Inventory} + \text{Purchases}$

Periodic Inventory System

• Inventory information is updated periodically, not after every transaction.

• Purchases are recorded in a Purchases account.

• Inventory counts are performed at period-end to determine ending inventory and cost of goods sold (COGS).

• Does not provide real-time inventory data.

Periodic System: Calculating COGS

• Physical count determines ending inventory.

• COGS is calculated as:

$\text{COGS} = \text{COGAS} - \text{Ending Inventory}$

Perpetual Inventory System

• Continuously tracks inventory and COGS after every transaction.

• Each sale immediately reduces inventory and updates COGS.

• Provides up-to-date information for management.

Perpetual System: Calculating COGS

• COGS and inventory are updated in real time.

• Physical counts are still needed to verify records and identify shrinkage.

Comparison of Inventory Systems

Feature	Periodic System	Perpetual System
Inventory Updates	At period end	After every transaction
COGS Calculation	At period end	Continuously
Management Information	Not up-to-date	Up-to-date
Cost	Lower	Higher

Inventory Cost Formulas

Why Cost Formulas Are Necessary

• Inventory purchase costs fluctuate over time.

• Cost formulas allocate COGAS between ending inventory and COGS.

Types of Cost Formulas

• Specific Identification: Assigns actual cost to each item sold and remaining in inventory.

• Weighted-Average: Uses the average cost of all items available for sale during the period.

• First-In, First-Out (FIFO): Assumes the earliest goods purchased are the first sold.

Specific Identification Example

• Suppose 4 units from beginning inventory ($65 each) and 5 units from a recent purchase ($74 each) are sold.

• COGS calculation:

$\text{COGS} = (4 \times 65) + (5 \times 74) = 260 + 370 = 630$

• Ending Inventory (EI):

$\text{EI} = \text{COGAS} - \text{COGS}$

Weighted-Average Example

• Average cost per unit is calculated as:

$\text{Weighted Average Cost per Unit} = \frac{\text{COGAS}}{\text{Total Units Available}}$

• COGS and EI are then determined using this average cost.

FIFO Example

• The cost of the earliest purchases is assigned to COGS, and the cost of the most recent purchases is assigned to ending inventory.

Comparison of Cost Formulas

Method	COGS	Ending Inventory	When Prices Rise
Specific Identification	Actual cost of items sold	Actual cost of items left	Varies
Weighted-Average	Average cost	Average cost	COGS and EI between FIFO and LIFO*
FIFO	Oldest costs	Most recent costs	Lower COGS, higher EI

*Note: LIFO is not permitted under IFRS but may be referenced for comparison.

Inventory Valuation

Carrying Value of Inventory

• Inventory is recorded at cost at acquisition.

• On the statement of financial position, inventory is reported at the lower of cost and net realizable value (NRV).

• NRV is the estimated selling price less estimated costs to make the sale.

$\text{NRV} = \text{Expected Selling Price} - \text{Estimated Costs to Make Sale}$

Inventory Write-Downs

• If NRV is lower than cost, inventory must be written down to NRV.

• Journal entry for write-down:

Dr. Cost of Goods Sold Cr. Inventory

• This reduces net income in the period of the write-down.

Inventory Valuation Errors

• Errors can arise from incorrect counts, misclassification, or improper inclusion/exclusion of goods (e.g., consignment, FOB terms).

• Valuation errors affect both the statement of financial position and the income statement.

• If not corrected, errors will also impact subsequent periods, but typically offset over two years.

Gross Margin and Inventory Ratios

Gross Margin

• Gross margin measures the difference between sales revenue and COGS.

$\text{Gross Margin} = \text{Sales Revenue} - \text{COGS}$

$\text{Gross Margin Ratio} = \frac{\text{Gross Margin}}{\text{Sales Revenue}}$

• Used to analyze company performance over time and compare with industry standards.

Inventory Turnover and Days to Sell Inventory

• These ratios assess how efficiently inventory is managed.

$\text{Inventory Turnover} = \frac{\text{Cost of Goods Sold}}{\text{Average Inventory}}$

$\text{Days to Sell Inventory} = \frac{365}{\text{Inventory Turnover}}$

• Higher turnover indicates faster sales; lower days to sell means inventory is held for a shorter period.

Internal Controls and Inventory Management

Safeguarding Inventory

• Management is responsible for implementing internal controls to protect inventory.

• Key controls include:

  • Physical controls (e.g., locks, surveillance)

  • Separation of duties (e.g., different staff for ordering, receiving, and recording inventory)

  • Regular inventory counts and reconciliations

• Controls help prevent theft, damage, and misstatement of inventory balances.

Inventory Management Costs and Risks

• Costs include storage, insurance, and handling.

• Risks include obsolescence and shrinkage.

• Auditors play a key role in verifying inventory existence and valuation.