Variable Cost

Variable Cost refers to costs that change in direct proportion to changes in business volume (such as output, sales volume, order quantity), as opposed to fixed costs. In foreign trade, variable costs often include raw materials, direct labor, packaging, sea/air freight, commissions, tariffs, etc. Usage scenarios: quotation calculation, break-even analysis, contribution margin calculation, decision to accept special orders, etc. Notes: It is necessary to distinguish variable costs from fixed costs (such as factory rent, management salaries) to avoid miscalculating fixed costs as variable costs; also pay attention to step variable costs (such as volume discounts) and semi-variable costs (such as utilities). Difference from 'marginal cost': Marginal cost is the cost of producing one additional unit, usually equal to variable cost, but variable cost is a total concept. Difference from 'total cost': Total cost = fixed cost + variable cost. Foreign trade practitioners should accurately calculate variable costs to set competitive prices and control risks.