Variable Cost: What It Is and How to Calculate It

variable cost economics definition

TVC is the total variable cost curve formed by plotting the points in the above schedule. It can be seen in the above graph, the TVC curve starts from the origin, which means that at zero level of output, the variable cost is also zero. TVC is an inversely S-shaped curve because of the Law of Variable Proportion.

variable cost economics definition

Variable Cost Examples

variable cost economics definition

Utilities are also variable in cost and are important when a manufacturing line turns on equipment income summary and starts production. There is a need for utilities because equipment consumes energy to operate. When they shut down their production machines, there is no utility consumed. In some case, the following simplified graph of variable cost is used for easy understanding and analysis.

variable cost economics definition

What are Variable Costs?

variable cost economics definition

Costs that do not change with the level of output, such as rent, insurance, and administrative expenses. Fixed costs include any number of expenses, including rental and lease payments, certain salaries, insurance, property taxes, interest expenses, depreciation, and some utilities. Fixed costs are allocated in the indirect expense section of the income statement, which leads to operating profit.

Formula and Calculation of Variable Costs

  • The marginal cost curve begins to slope upward at this point, signaling that each additional unit will now cost more to produce than the previous one.
  • When the bakery does not bake any cake, its variable cost drops to zero.
  • The study of variable costs can be traced back to the fundamental principles of cost accounting and microeconomic theory.
  • In Marxian theory, costs are analyzed within the broader context of labor and capital.
  • Raw materials may cost $0.50 per pound for the first 1,000 pounds, while orders of greater than 1,000 pounds are charged $0.48.
  • While these fixed costs may change over time, the change is not related to production levels.

Unlike fixed costs, which remain constant regardless of production levels, variable costs increase or decrease as more or less of a good or service is produced. Understanding variable costs Bookkeeping for Etsy Sellers is crucial for businesses when planning budgets, setting prices, and analyzing profitability. Variable cost refers to that portion of the total cost which changes in direct proportion to the level of output.

Formula of Total Variable Cost

The production variable cost economics definition process also has other costs that are equally important as the variable cost. The fixed cost remains constant over a relevant range, but the variable cost changes with every additional unit produced. A Variable Cost is an expense that changes in direct proportion to production volume or business activity.

variable cost economics definition

For example, to get lower raw material prices, companies can buy in bulk for a discount. Or, the company can acquire a supplier and integrate it into its existing business. It is useful for measuring how much revenue can cover variable costs. A high contribution margin shows you the company is making significant amounts of money, paying fixed costs and profit. Operating beyond the point where marginal cost equals marginal revenue means losing money on each additional unit, even if the overall operation remains profitable. Understanding where these curves intersect helps businesses make strategic decisions about production, pricing, and capacity investments.