★ The classification of total cost as variable cost and fixed cost is difficult as no cost can be completely variable or completely fixed.

★ Fixed costs are eliminated for the valuation of inventory of finished goods and semi-finished goods in-spite of the fact that they might have been actually incurred.

★ It does not provide any standard for the evaluation of performance.

★ Fixation of selling price on marginal cost basis may be useful for short term only and may be dangerous in the long run.

★ It does not consider the fixed overheads.

★ It can be used for assessment of profitability only in the short run.