What is Variable Cost?
A variable cost is an expense that changes in direct proportion to the level of business activity or production volume. Total variable cost rises with output, while variable cost per unit stays roughly constant.
How It Works
- Identify costs that move with output: raw materials, direct labor on piece rate, sales commissions, packaging.
- Multiply variable cost per unit by units produced to get total variable cost.
- Use in contribution margin and break-even analysis.
Saudi Context
Saudi manufacturers use variable costing to price exports and negotiate with ZATCA on transfer pricing. WPS-paid hourly wages, raw materials priced in USD, and SASO compliance materials are typical variable costs.
Example
A bottled-water producer spends SAR 0.40 in plastic and SAR 0.20 in labor per bottle. Producing 1,000,000 bottles costs SAR 600,000 in variable costs.