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Microlesson · 5-min read

Valuation of Closing Finished Goods: FIFO, LIFO and Weighted Average

## Valuation of Closing Finished Goods (FG)

When opening stock and current-period production are valued at different rates, the value of closing FG depends on the assumed flow of goods.

> Doubt Buster: A stock-valuation issue (FIFO / LIFO / Weighted Average) arises only when opening-stock units and current-period production units are valued differently. If both are at the same rate, the method makes no difference.

Common data used below

  • Cost of Production (COP): ₹10,00,000 for 10,000 units (₹100/unit)
  • Opening Stock: ₹10,00,000 for 8,000 units (₹125/unit)
  • Units sold: 11,000; Closing stock: 7,000 units

### I. FIFO — Opening stock is sold first

Sales (11,000) consume all 8,000 opening units + 3,000 of current production. So closing stock of 7,000 comes fully out of current production (₹100/unit):

$$\text{Closing FG} = \frac{₹10{,}00{,}000}{10{,}000}\times 7{,}000 = ₹7{,}00{,}000$$

### II. LIFO — Current-period production is sold first

Sales (11,000) consume all 10,000 current units + 1,000 opening units. So closing stock of 7,000 comes fully out of opening stock (₹125/unit):

$$\text{Closing FG} = \frac{₹10{,}00{,}000}{8{,}000}\times 7{,}000 = ₹8{,}75{,}000$$

### III. Weighted Average — the combined mix is sold

Pool opening stock and current production, find one average rate:

Rate/unitUnitsTotal
COP₹10010,000₹10,00,000
Opening Stock₹1258,000₹10,00,000
Total18,000₹20,00,000

$$\text{Weighted Avg rate} = \frac{₹20{,}00{,}000}{18{,}000} = ₹111.11/\text{unit}$$

$$\text{Closing FG} = ₹111.11 \times 7{,}000 = ₹7{,}77{,}778$$

### Compare the three answers

MethodClosing FG value
FIFO₹7,00,000
LIFO₹8,75,000
Weighted Average₹7,77,778

Worked example

### Example 1

FIFO — COP ₹10,00,000 (10,000 u @ ₹100); Opening 8,000 u @ ₹125; sold 11,000; closing 7,000. Under FIFO the 8,000 opening units go out first, then 3,000 current units, leaving closing stock entirely from current production. Closing FG = (10,00,000 ÷ 10,000) × 7,000 = ₹7,00,000.

### Example 2

LIFO — same data. Under LIFO the 10,000 current units are sold first, then 1,000 opening units, leaving closing stock entirely from opening stock. Closing FG = (10,00,000 ÷ 8,000) × 7,000 = ₹8,75,000.

### Example 3

Weighted Average — pool 18,000 units costing ₹20,00,000 → ₹111.11/unit. Closing FG = ₹111.11 × 7,000 = ₹7,77,778.

⚠️ Common exam mistakes

  • Applying FIFO/LIFO when opening stock and current production are valued at the same rate — no valuation difference arises, so the exercise is unnecessary.
  • Mixing up the flow assumptions: FIFO leaves closing stock from the LATEST (current) production, while LIFO leaves closing stock from the OLDEST (opening) stock.
  • Computing the weighted-average rate on units sold instead of on total available units (opening + current).
  • Forgetting to net sales against both layers before deciding which layer the closing stock comes from.
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