## 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/unit | Units | Total | |
|---|---|---|---|
| COP | ₹100 | 10,000 | ₹10,00,000 |
| Opening Stock | ₹125 | 8,000 | ₹10,00,000 |
| Total | 18,000 | ₹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
| Method | Closing FG value |
|---|---|
| FIFO | ₹7,00,000 |
| LIFO | ₹8,75,000 |
| Weighted Average | ₹7,77,778 |