Inventory Valuation Methods — FIFO, AVCO & Which ICAP Prefers

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Inventory valuation is a consistently tested topic in ICAP FOA — appearing in MCQs, financial statements adjustments, and standalone calculation questions. The three methods — FIFO, AVCO, and LIFO — produce different closing inventory values, which directly affects reported profit. Understanding when to use each method and how to calculate them accurately is a reliable source of marks.

Why Inventory Valuation Matters

The value of closing inventory directly impacts two financial statements:

• SOCI: Closing inventory reduces Cost of Goods Sold (COGS), increasing gross profit
• SOFP: Closing inventory appears as a current asset

Cost of Goods Sold = Opening Inventory + Purchases − Closing Inventory. A higher closing inventory value = lower COGS = higher profit. This is why inventory valuation method choice significantly affects reported results.

IAS 2 and ICAP Guidance

ICAP FOA follows International Accounting Standards. IAS 2 (Inventories) permits two methods:

• FIFO — First In, First Out (permitted under IAS 2)
• AVCO — Weighted Average Cost (permitted under IAS 2)
• LIFO — Last In, First Out (NOT permitted under IAS 2 / IFRS)

ICAP exam critical fact: LIFO is not permitted under IAS 2. If an MCQ asks which method is NOT allowed under international accounting standards — the answer is LIFO. This appears regularly in ICAP past papers.

Method 1: FIFO — First In, First Out

FIFO assumes that the oldest inventory purchased is the first to be sold. The closing inventory therefore consists of the most recently purchased units.

Example

Opening stock: 100 units @ Rs. 10. Purchase 1: 200 units @ Rs. 12. Purchase 2: 150 units @ Rs. 14. Units sold: 300 units.

Units sold (FIFO):

100 units @ Rs.10 = Rs. 1,000 (oldest first)

200 units @ Rs.12 = Rs. 2,400

Total COGS = Rs. 3,400

Closing inventory (150 units @ Rs.14) = Rs. 2,100

Characteristics of FIFO

• Closing inventory reflects current market prices (most recent purchases)
• Produces higher profit in periods of rising prices
• Permitted under IAS 2

Method 2: AVCO — Weighted Average Cost

AVCO calculates a weighted average cost per unit after each purchase and applies this average to all issues (sales) and closing inventory.

Weighted Average Cost = Total Cost of Available Inventory

÷ Total Units Available

Example (using same data)

Total units: 100 + 200 + 150 = 450 units

Total cost: (100×10) + (200×12) + (150×14)

= 1,000 + 2,400 + 2,100 = Rs. 5,500

Avg cost per unit = 5,500 ÷ 450 = Rs. 12.22

COGS (300 units × 12.22) = Rs. 3,667

Closing inventory (150 × 12.22) = Rs. 1,833

Periodic vs Perpetual AVCO

Periodic AVCO calculates one average for the entire period. Perpetual AVCO recalculates after every purchase. ICAP FOA questions will specify which to use — read the question carefully.

Comparing FIFO vs AVCO in Rising Prices

FIFO closing inventory: Higher (most recent, higher-cost units remain)

FIFO COGS: Lower (older, cheaper units sold first)

FIFO gross profit: Higher

AVCO closing inventory: Middle ground — smoothed average

AVCO gross profit: Between FIFO and LIFO

In a period of RISING prices: FIFO gives the highest profit and highest closing inventory value. LIFO (where used) gives the lowest. AVCO falls in between. ICAP MCQs test this comparison directly.

The Lower of Cost or NRV Rule

IAS 2 requires inventory to be valued at the LOWER of cost and net realisable value (NRV). NRV is the estimated selling price less estimated costs to complete and sell.

If NRV falls below cost (e.g. obsolete or damaged goods), inventory must be written down to NRV. This write-down is an expense in the SOCI.

Cost: Rs. 8,000

NRV: Rs. 6,500

Inventory value: Rs. 6,500 (lower of cost or NRV)

Write-down: Rs. 1,500 expense in SOCI

Practice Inventory Valuation on Preptio

FIFO, AVCO, and the lower of cost or NRV rule all appear regularly in Preptio's FOA question bank. The Financial Statements practice cases include inventory adjustment notes — giving you practice applying these methods within a full trial balance context.

Practice Inventory Valuation on Preptio → preptio.com

Disclaimer: Preptio is a practice supplement — not a replacement for textbook study. Always cover your ICAP-recommended material alongside platform practice.