Inventories and Operating Assets

Introduction and Context

Inventories and operating assets are central to financial reporting because they connect expenditure, production capacity, revenue generation and cash flow. Inventory represents resources held for sale, in production, or to be consumed in production or service delivery. Operating assets—such as property, plant and equipment, right-of-use assets and biological assets—support the entity’s operations over longer periods or through biological transformation.

The accounting treatment of these assets affects reported profit, gross margin, asset turnover, working capital, impairment losses, taxation and management decisions. A small change in inventory costing or asset-life assumptions can materially alter performance indicators. Consequently, professional analysis requires more than identifying an accounting rule: it requires understanding measurement bases, estimation uncertainty, controls and economic consequences.

This chapter primarily uses IFRS terminology, especially IAS 2 Inventories, IAS 16 Property, Plant and Equipment, IFRS 16 Leases, IAS 36 Impairment of Assets and IAS 41 Agriculture. Local standards may differ, so preparers must verify the applicable reporting framework.

Learning Objectives

By the end of this chapter, the reader should be able to:

1. Define inventory and distinguish it from other operating assets.
2. Determine inventory cost, including conversion costs and directly attributable expenditure.
3. Apply specific identification, FIFO and weighted-average cost-flow methods.
4. Measure inventories at the lower of cost and net realisable value and account for reversals of write-downs.
5. Explain the accounting for property, plant and equipment, right-of-use assets and biological assets.
6. Analyse the effects of asset measurement on margins, working capital, cash flow and managerial decisions.
7. Evaluate control, estimation, ethical and governance issues associated with operating assets.

1. Classification: Inventory versus Long-Lived Operating Assets

Under IAS 2, inventories are assets:

• held for sale in the ordinary course of business;
• in the process of production for such sale; or
• in the form of materials or supplies to be consumed in production or rendering services.

The expected operating cycle is important. Inventory is normally current even when the production cycle exceeds twelve months, as in some construction or agricultural activities. By contrast, property, plant and equipment (PPE) are tangible assets held for production, supply, rental or administrative purposes and expected to be used during more than one period.

A spare part may be inventory if it is consumed routinely. A major replacement component may be PPE if it meets the recognition criteria and is used over several periods. Judgement is therefore required; physical form alone does not determine classification.

A useful conceptual distinction is:

2. Measuring Inventory Cost

2.1 Components of cost

Inventory cost includes:

1. Purchase costs: purchase price, import duties and non-recoverable taxes, less trade discounts, rebates and similar deductions.
2. Conversion costs: direct labour and systematic allocation of variable and fixed production overhead.
3. Other costs: expenditure incurred to bring inventories to their present location and condition.

The general cost identity is:

The formula applies only to costs necessary to bring inventory to its present condition and location. Abnormal waste, avoidable storage costs, administrative overhead unrelated to production and selling costs are normally expensed as incurred.

2.2 Allocation of production overhead

Fixed production overhead is allocated using normal production capacity, not merely actual output in an unusually depressed period. This prevents low production from inflating the cost per unit. Variable overhead is allocated based on actual use of production facilities.

If normal capacity is 10,000 units and fixed production overhead is CU200,000, the normal fixed overhead rate is:

If only 7,000 units are produced, CU140,000 is allocated to inventory. The remaining CU60,000 is recognised as an expense rather than being loaded into inventory. This treatment makes inefficient under-utilisation visible.

Joint-product costs require a rational and consistent allocation method, often based on relative sales value at the split-off point. By-products may be measured using a defensible net realisable value and deducted from the cost of the main product when appropriate.

2.3 Costs excluded from inventory

The following are generally excluded:

• abnormal amounts of wasted materials, labour or production resources;
• storage costs, unless storage is necessary in the production process;
• administrative overhead that does not bring inventory to its present condition; and
• selling and distribution costs.

Borrowing costs may be included only when inventories are qualifying assets under the applicable borrowing-cost requirements—for example, goods requiring a substantial period to become saleable.

3. Cost-Flow Assumptions

The physical movement of goods and the accounting cost flow need not be identical. Cost-flow assumptions determine which costs are assigned to cost of sales and which remain in closing inventory.

3.1 Specific identification

Specific identification assigns the actual cost of each item to the item sold or held. It is appropriate for items that are not ordinarily interchangeable, such as customised machinery, unique artwork or individually identifiable real estate units. It is unsuitable when large volumes of interchangeable goods make identification impracticable or create opportunities for earnings manipulation.

3.2 First-in, first-out (FIFO)

FIFO assumes the earliest costs are assigned to cost of sales first. In periods of rising input prices, FIFO generally produces:

• lower cost of sales;
• higher gross profit;
• higher closing inventory; and
• higher reported current assets than a weighted-average method.

The effects reverse, or narrow, when prices fall.

3.3 Weighted-average cost

Under a periodic weighted-average system:

The numerator includes opening inventory plus purchases, and the denominator includes opening units plus units purchased. Under a perpetual system, a moving average is recalculated after each purchase.

Worked Example 1: FIFO and weighted average

An entity has the following transactions:

Units available are 300 and total cost is CU3,400. Closing inventory is 120 units.

FIFO: The 180 units sold comprise 100 units at CU10 and 80 units at CU12.

Cost of sales = (100 × CU10) + (80 × CU12) = CU1,960.

Closing inventory = 120 × CU12 = CU1,440.

Weighted average:

Average cost per unit = CU3,400 ÷ 300 = CU11.3333 approximately.

Cost of sales = 180 × CU11.3333 = CU2,040 approximately.

Closing inventory = 120 × CU11.3333 = CU1,360 approximately.

The totals reconcile: CU1,960 + CU1,440 = CU3,400 and CU2,040 + CU1,360 = CU3,400. Under rising prices, FIFO reports the higher gross profit because its cost of sales contains more older, cheaper costs.

3.4 Consistency and comparability

An entity should use the same cost formula for inventories having a similar nature and use. Different formulas may be justified for inventories with different characteristics or locations. The LIFO method is not permitted under IFRS. Changes in cost formulas require a sound basis and appropriate disclosure under the applicable requirements.

4. Net Realisable Value and Write-Downs

Inventory is measured at the lower of cost and net realisable value (NRV). NRV is the estimated selling price in the ordinary course of business less estimated costs of completion and estimated costs necessary to make the sale.

NRV is entity-specific and differs from fair value. Fair value reflects a market-participant perspective, whereas NRV reflects the amount the entity expects to realise in its ordinary course of business.

Worked Example 2: NRV test

A product has a cost of CU75 per unit. Its expected selling price is CU82, completion costs are CU4 and selling costs are CU6.

NRV = CU82 − CU4 − CU6 = CU72.

Because NRV of CU72 is below cost of CU75, the inventory is written down by CU3 per unit. For 2,000 units, the loss is CU6,000:

The write-down is recognised in profit or loss, commonly within cost of sales or a separately presented inventory impairment expense, depending on the entity’s presentation policy.

Level of assessment

Write-downs are generally assessed item by item. Grouping may be appropriate for similar or related items, but broad categories should not be used to conceal losses in slow-moving or obsolete products. Materials are not written below cost when finished goods are expected to be sold at or above cost; however, if finished goods are impaired, related materials may also require write-down.

Reversal

If NRV subsequently increases, a previous write-down is reversed, but only to the amount of the original write-down. The revised carrying amount cannot exceed the cost that would have been reported had no write-down occurred. This prevents recognition of unrealised gains above historical cost under the cost-and-NRV model.

5. Inventory Systems, Controls and Audit Evidence

A periodic system determines inventory and cost of sales through a physical count at period end. A perpetual system updates records continuously through purchases, sales and adjustments. Technology can improve timeliness but does not eliminate the need for physical verification.

Important controls include:

• approved purchase orders and three-way matching of purchase orders, goods received notes and invoices;
• segregation of custody, recording and approval responsibilities;
• cycle counts and independent year-end counts;
• barcode, RFID or warehouse-management controls;
• ageing reports for slow-moving and obsolete items;
• review of standard-cost variances; and
• cut-off testing around the reporting date.

Inventory cut-off is particularly important. Goods received before year-end should normally be included in inventory and liabilities even if the supplier invoice arrives later. Goods dispatched under terms transferring control before year-end may need to be excluded from closing inventory. Consignment inventory remains the asset of the consignor until the relevant control or sale conditions are met.

Standard costing may be used when it approximates cost. Standards should be regularly reviewed; unexplained favourable variances may indicate understated costs or inappropriate standards rather than genuine efficiency.

6. Operating Assets Beyond Inventory

6.1 Property, plant and equipment

An item of PPE is recognised when it is probable that future economic benefits will flow to the entity and its cost can be measured reliably. Cost may include purchase price, directly attributable costs of bringing the asset to the location and condition necessary for operation, and the present value of dismantling or restoration obligations where recognition criteria are met.

Subsequent measurement may use:

• the cost model: cost less accumulated depreciation and accumulated impairment losses; or
• the revaluation model, where permitted and applied consistently to an entire class of assets: fair value at revaluation date less subsequent depreciation and impairment.

Depreciation allocates depreciable amount over useful life. The depreciable amount is:

Under straight-line depreciation:

The formula assumes a constant pattern of consumption and a useful life measured in years. If consumption is not even, another systematic method is more appropriate. Depreciation begins when the asset is available for use, not necessarily when it first generates revenue. Significant components with different useful lives are depreciated separately.

Worked Example 3: Component depreciation

A machine costs CU500,000. Its main structure costs CU400,000, has a ten-year life and a CU40,000 residual value. A major component costs CU100,000, has a five-year life and no residual value.

Structure depreciation = (CU400,000 − CU40,000) ÷ 10 = CU36,000 per year.

Component depreciation = CU100,000 ÷ 5 = CU20,000 per year.

Total annual depreciation for the first five years is CU56,000. Component accounting avoids understating expense in the early years and recognises the replacement pattern more faithfully.

Useful lives, residual values and depreciation methods are reviewed at least at each financial year-end. A change in estimate is generally applied prospectively, whereas a correction of an error follows the applicable prior-period error requirements.

6.2 Impairment of operating assets

Under IAS 36, an asset is impaired when its carrying amount exceeds its recoverable amount. Recoverable amount is the higher of fair value less costs of disposal and value in use.

An impairment loss is recognised only when the carrying amount exceeds recoverable amount. Value in use is based on discounted future cash flows and requires assumptions about volume, prices, costs, growth and discount rates. Cash-generating units are used when individual asset cash flows cannot be separately identified.

Impairment losses may be reversed when estimates recover, except that reversals cannot increase the carrying amount above the amount that would have existed, net of depreciation, had no impairment been recognised. Goodwill has special rules and impairment reversals are prohibited for goodwill.

6.3 Right-of-use assets

For most leases, a lessee recognises a right-of-use asset and a lease liability at commencement under IFRS 16. The right-of-use asset generally includes the initial lease liability, payments made at or before commencement, initial direct costs and estimated restoration obligations, less lease incentives.

The subsequent pattern normally includes depreciation of the right-of-use asset and interest on the lease liability. This means lease accounting affects operating expenses, EBITDA, total assets and leverage differently from a simple rental-expense model. Short-term and low-value exemptions may apply when elected and conditions are met.

6.4 Biological assets

Biological assets include living animals and plants. IAS 41 generally measures them at fair value less costs to sell, both at initial recognition and at each reporting date, unless fair value cannot be measured reliably in limited circumstances. Agricultural produce at the point of harvest is measured at fair value less costs to sell; that amount becomes its cost for subsequent inventory accounting.

Biological transformation includes growth, degeneration, production and reproduction. Changes in fair value less costs to sell are recognised in profit or loss. This can create significant earnings volatility even without a cash sale. Bearer plants used solely to grow produce are accounted for under IAS 16 after reaching maturity, while the produce growing on them remains within IAS 41.

7. Effects on Financial Analysis and Decisions

Inventory measurement directly affects gross profit:

It also affects working capital:

A write-down reduces inventory, profit and equity. It may reduce current assets and net working capital, but it does not itself create a cash outflow in the period of recognition. The cash consequence may have occurred earlier when goods were purchased or may arise later through disposal.

Useful analytical ratios include:

The formulas assume consistent annualisation and a meaningful average inventory, commonly calculated as opening inventory plus closing inventory divided by two. A higher turnover can indicate efficient inventory management, but it may also indicate understocking. A lower turnover may reflect strategic safety stock, seasonal timing, obsolete goods or falling demand.

For operating assets, analysts examine asset turnover, depreciation intensity, impairment trends, capital expenditure and return on invested capital. Different depreciation methods and revaluation choices reduce comparability across firms. Analysts should therefore read accounting policies, useful-life disclosures, impairment assumptions and inventory write-down movements rather than relying on ratios alone.

8. Illustrative Case: Meridian Foods plc

Background

Meridian Foods plc manufactures packaged meals. At year-end it holds 50,000 units of a product with a recorded cost of CU18 per unit. The selling price has fallen to CU19.50. Completion costs are CU0.80 per unit and selling costs are CU1.20 per unit. The company also operates a production line costing CU2,400,000, with a residual value of CU200,000 and an estimated useful life of ten years.

Problem

Management proposes three treatments: retain inventory at cost because it has not yet been sold, include all factory overhead incurred during a period of low production in inventory, and depreciate the whole production line over ten years without separating its major inspection component.

Analysis

NRV per unit is:

NRV = CU19.50 − CU0.80 − CU1.20 = CU17.50.

The required inventory write-down is CU0.50 per unit, or CU25,000 in total. The assertion that no loss exists before sale is incorrect because IAS 2 applies the lower-of-cost-and-NRV rule before sale.

Suppose normal capacity is 100,000 units and fixed production overhead is CU600,000. The normal allocation rate is CU6 per unit. If production is only 60,000 units, CU360,000 is allocated to inventory and CU240,000 is expensed as unallocated overhead. Loading the full CU600,000 into 60,000 units would allocate CU10 per unit and overstate inventory.

The production line’s depreciable amount is CU2,200,000, giving straight-line depreciation of CU220,000 per year if consumption is uniform. However, if a major inspection component costing CU400,000 must be replaced after four years, it should be depreciated separately. Failure to componentise may understate depreciation in early years and distort the carrying amount when the inspection occurs.

Approach and outcome

Meridian should record the inventory write-down, expense abnormal unallocated overhead, review component information and document its estimates of selling prices, completion costs, capacity and useful lives. Management should also assess whether the fall in selling price indicates broader impairment or demand risks.

The immediate outcome is lower inventory and profit, but more faithful reporting. Decision-makers receive an earlier warning about margin pressure and excess capacity rather than a delayed loss when products are sold.

Learning points

1. Unsold inventory can generate an accounting loss when NRV falls below cost.
2. Normal-capacity allocation prevents poor utilisation from being hidden in inventory.
3. Component depreciation improves matching between consumption and expense.
4. Accounting estimates require evidence, review and governance rather than optimistic assumptions.

9. Ethical, Regulatory and Contemporary Issues

Inventory and operating assets are vulnerable to intentional bias because managers may influence quantities, overhead allocations, useful lives, residual values, impairment assumptions and NRV estimates. Common warning signs include unusual year-end purchases, delayed write-offs, unexplained margin improvements, obsolete items without provisions and optimistic cash-flow forecasts.

Governance practices should include independent review of significant estimates, audit committee challenge, documented approval of valuation models and reconciliation of operational records to the general ledger. Internal audit can test existence, rights, condition, cut-off and valuation.

Technology creates both opportunities and risks. RFID, sensors and integrated enterprise systems improve traceability and continuous monitoring. Machine-learning models can forecast demand and identify slow-moving stock, but their outputs require human review because historical data may embed bias or fail during structural market changes. Automated valuation should retain audit trails, version control and clear responsibility for overrides.

Climate change and supply-chain disruption may affect NRV, useful lives, restoration obligations, insurance, production capacity and impairment forecasts. Disclosures should explain material estimation uncertainty and concentration risks where required. Sustainability-related information does not replace the financial reporting requirements, but it may provide important evidence for asset valuation and expected cash flows.

Best-Practice Checklist

A robust month-end and year-end process should:

• reconcile physical quantities to perpetual records;
• investigate negative, dormant and unusually high-margin items;
• calculate NRV using current, supportable evidence;
• allocate overhead using normal capacity and review abnormal waste;
• document the selected cost formula and apply it consistently;
• review useful lives, residual values and depreciation methods;
• identify impairment indicators and test cash-generating units where necessary;
• separate biological assets, produce and bearer plants correctly;
• reconcile additions, disposals, depreciation and impairment to the fixed-asset register; and
• disclose significant policies, judgements and estimation uncertainties.

Chapter Summary

Inventory is measured initially at cost, comprising purchase costs, conversion costs and other expenditure necessary to bring goods to their present location and condition. FIFO, specific identification and weighted-average methods determine how available costs are assigned between cost of sales and closing inventory. Under IAS 2, inventory is subsequently measured at the lower of cost and NRV, with write-downs recognised when expected realisation falls below cost and reversals limited to the original write-down.

Operating assets require different models. PPE is generally measured using a cost or permitted revaluation model and depreciated systematically over useful lives. Right-of-use assets reflect the lessee’s controlled right to use leased resources. Biological assets are generally measured at fair value less costs to sell, producing potentially volatile gains and losses. Impairment testing compares carrying amount with recoverable amount.

These measurement choices affect gross margin, net working capital, asset turnover, leverage and management decisions. Reliable reporting depends on physical controls, valuation evidence, normal-capacity allocation, component accounting, transparent estimates and effective governance.

Key Terms

Inventory: Assets held for sale, in production for sale, or to be consumed in production or services.

Cost of sales: The carrying cost of inventory recognised as an expense when related revenue is recognised.

FIFO: A cost-flow assumption assigning earliest costs to goods sold first.

Specific identification: Assignment of actual identifiable costs to individual items.

Weighted-average cost: Average cost calculated from total available cost divided by total available units.

Net realisable value: Estimated selling price less completion and selling costs.

Write-down: Reduction of an asset’s carrying amount when recoverable or realisable value is lower.

Conversion costs: Direct labour and allocated production overhead.

Normal capacity: Expected average production over normal circumstances.

Abnormal waste: Excessive or avoidable production resource consumption expensed as incurred.

Property, plant and equipment: Tangible long-term assets used in operations.

Depreciable amount: Cost or revalued amount less residual value.

Component accounting: Separate depreciation of significant parts with different useful lives.

Recoverable amount: Higher of fair value less costs of disposal and value in use.

Cash-generating unit: Smallest identifiable asset group generating largely independent cash inflows.

Right-of-use asset: A lessee’s controlled right to use an identified asset.

Biological asset: A living animal or plant.

Bearer plant: A living plant used to grow produce over more than one period.

Fair value less costs to sell: Market-based value less directly attributable selling costs.

Net working capital: Current assets less current liabilities.

Review Questions

Short Answer Questions

1. What costs are included in inventory conversion costs?
2. Define net realisable value and distinguish it from fair value.
3. Why is normal capacity used when allocating fixed production overhead?
4. What is component accounting for PPE?
5. How does a biological asset differ from a bearer plant under IFRS?

Long Answer Questions

1. Explain FIFO, specific identification and weighted-average costing, including their likely effects during periods of rising prices.
2. Discuss the recognition, measurement and reversal of inventory write-downs under IAS 2.
3. Explain the cost model and revaluation model for PPE and evaluate their effects on financial analysis.
4. Discuss impairment testing under IAS 36, including recoverable amount and cash-generating units.
5. Explain how inventory and operating-asset accounting affects profitability, working capital and managerial decision-making.

Analytical / Application Questions

1. An entity has 8,000 units costing CU32 each. Expected selling price is CU34, completion cost is CU1.50 and selling cost is CU2.50 per unit. Calculate NRV, determine the write-down per unit and calculate the total write-down.
2. A factory’s normal capacity is 40,000 units and fixed overhead is CU320,000. Actual production is 25,000 units. Determine the normal fixed-overhead rate, the amount allocated to inventory and the amount expensed as unallocated overhead.
3. Critically assess how an analyst should interpret a sharp increase in inventory turnover when revenue is falling and management has recently reduced inventory provisions.

Multiple Choice Questions with Answers

Question 1

Under IAS 2, which item is normally included in inventory cost?

A. Abnormal production waste

B. Selling and distribution costs

C. Direct production labour

D. General administrative costs unrelated to production

Correct Answer: C. Direct production labour

Question 2

A product costs CU50, has an expected selling price of CU54, completion costs of CU2 and selling costs of CU3. What is its NRV?

A. CU49

B. CU51

C. CU52

D. CU59

Correct Answer: B. CU51

Question 3

During rising prices, which result is generally associated with FIFO compared with weighted-average costing?

A. Higher cost of sales and lower closing inventory

B. Lower cost of sales and higher closing inventory

C. Identical cost of sales in all circumstances

D. No effect on gross profit

Correct Answer: B. Lower cost of sales and higher closing inventory

Question 4

Fixed production overhead is allocated using normal capacity primarily to:

A. Capitalise all costs incurred regardless of output

B. Avoid hiding under-utilisation in inventory cost

C. Eliminate the need for physical inventory counts

D. Increase reported inventory during downturns

Correct Answer: B. Avoid hiding under-utilisation in inventory cost

Question 5

A machine costs CU120,000, has a residual value of CU20,000 and a useful life of five years. Straight-line annual depreciation is:

A. CU20,000

B. CU24,000

C. CU28,000

D. CU100,000

Correct Answer: A. CU20,000

Question 6

Which statement about an inventory write-down reversal is correct?

A. It can increase inventory above original cost

B. It is never permitted

C. It is limited to the amount of the previous write-down

D. It is recognised directly in share capital

Correct Answer: C. It is limited to the amount of the previous write-down

Question 7

Under IAS 41, biological assets are generally measured at:

A. Historical cost without adjustment

B. Fair value less costs to sell

C. Replacement cost only

D. The lower of cost and NRV in every case

Correct Answer: B. Fair value less costs to sell

Question 8

Recoverable amount under IAS 36 is the:

A. Lower of cost and NRV

B. Higher of fair value less costs of disposal and value in use

C. Original cost plus depreciation

D. Selling price less inventory costs only

Correct Answer: B. Higher of fair value less costs of disposal and value in use

Question 9

Which event normally begins depreciation of PPE?

A. When the asset is ordered

B. When the asset is paid for

C. When the asset is available for use

D. When the asset first earns revenue

Correct Answer: C. When the asset is available for use

Question 10

If cost of sales is CU900,000 and average inventory is CU150,000, inventory turnover is:

A. 0.17 times

B. 1.5 times

C. 6 times

D. 7.5 times

Correct Answer: C. 6 times