Question

Undervaluation of Opening Stock in Cost Accounts will lead to:

• A. increase in costing profits
• B. decrease in costing profits
• C. no change in costing profits
• D. creates abnormal loss

Hint:

$$\text{Opening Stock Valuation} \propto \text{Total Cost of Sales} \propto \frac{1}{\text{Net Profit}}$$ Because opening stock is a cost input, any undervaluation of opening stock will artificially increase your calculated profits.

Answer 1

The Correct Option is A

Step 1: Understanding Opening Stock in Cost Calculations:
Opening stock represents the value of inventory carried over from the previous period. It is treated as an initial cost of production in the cost sheet: $$\text{Cost of Materials Consumed} = \text{Opening Stock} + \text{Purchases} - \text{Closing Stock}$$ $$\text{Total Cost of Sales} = \text{Cost of Materials Consumed} + \text{Wages} + \text{Overheads}$$

Step 2: Calculating the Mathematical Impact of Undervaluation:
If opening stock is undervalued in the cost accounts: Value of Opening Stock \downarrow &\implies Cost of Materials Consumed \downarrow
&\implies Total Cost of Sales \downarrow Because costing profit is calculated as revenue minus total cost: $$\text{Costing Profit} = \text{Sales Revenue} - \text{Total Cost of Sales}$$ A lower calculated cost of sales ($\downarrow$) directly results in a higher calculated costing profit ($\uparrow$).

Step 3: Conclusion:
Undervaluing opening stock reduces calculated costs, which artificially inflates reported profits. This leads to an increase in costing profits (A).