+**Variable Costs** are expenses that change in direct proportion to the volume of [Output](/wiki/output) a business produces. Unlike [Fixed Costs](/wiki/fixed_costs), these expenditures fluctuate with activity levels, growing as production increases and and shrinking as it decreases, directly impacting a firm's profitability.
+## See also
+- [Fixed Costs](/wiki/fixed_costs)
+- [Total Cost](/wiki/total_cost)
+- [Marginal Cost](/wiki/marginal_cost)
... 1 more lines