How is the use of variable costing is limited?

Variable costing is limited primarily because it does not comply with generally accepted accounting principles (GAAP), which require absorption costing for external financial reporting. This method can also distort profitability analysis, as it excludes fixed manufacturing overhead from product costs, potentially misleading managers about the true cost of production. Additionally, variable costing may not be suitable for long-term decision-making, as it focuses on short-term variable costs and can overlook the impact of fixed costs on overall profitability.