Fixed overhead
Overhead that does not vary with output over a relevant period. The term does not calculate or assign an amount.
Cost accounting glossary
Fixed overhead is overhead that does not vary with output over the relevant period.
This definition distinguishes fixed overhead from variable overhead and variable costing. It does not calculate, allocate, classify, record, model, validate, or decide any cost, inventory, price, margin, profit, financial-statement, tax, or operating matter.
Fixed overhead refers to overhead that does not vary with output over a relevant period. In the OpenStax comparison of cost-accounting methods, fixed manufacturing overhead is included in product cost under absorption costing and treated as a period cost under variable costing. The term does not itself establish an amount, allocation, inventory value, reporting outcome, tax treatment, or accounting conclusion. Read the OpenStax explanation.
Three related terms
Related terms do not determine an accounting treatment.
Fixed-overhead language may appear beside variable overhead and variable costing. The terms can clarify a discussion without determining a cost allocation, inventory value, financial statement, tax position, reporting method, accounting policy, or business decision.
Variable overhead
Overhead whose total amount changes with activity or output. The distinction describes cost behavior; it does not determine an accounting result.
Variable costing
A cost-accounting method that treats fixed manufacturing overhead as a period cost rather than including it in product cost.
Why context matters
A cost label does not determine a financial result.
The important distinction
A glossary defines the term. It does not produce an accounting result.
OpenStax uses fixed manufacturing overhead to distinguish variable costing and absorption costing. That description provides vocabulary, not a calculation, allocation, financial statement, inventory valuation, tax position, accounting judgment, or decision for a specific organization.
Cost behavior, overhead, context
A term does not calculate or validate overhead.
A cost discussion may involve materials, labor, overhead, inventory, sales, costs of goods sold, margins, financial statements, and tax reporting. This page does not calculate, allocate, classify, record, reconcile, validate, or decide any of them.
A source note
Shared terminology can help name a cost-accounting question.
OpenStax distinguishes variable and absorption costing by their treatment of fixed manufacturing overhead. That supports a plain-language definition; it does not resolve an accounting, financial, tax, reporting, inventory, pricing, or operational question.
Keep the definition and the accounting conclusion separate.
An educational source can explain a cost-accounting term. It cannot determine a cost, allocation, inventory valuation, reporting basis, accounting policy, tax treatment, regulatory result, margin, profit, price, or business decision.
Glossary boundary: This page does not calculate, allocate, classify, record, reconcile, validate, model, analyze, estimate, forecast, report, audit, select, recommend, or decide any overhead, cost, inventory, product, price, margin, profit, financial statement, tax, accounting, manufacturing, procurement, or operational matter.
What this glossary does not decide
This educational definition does not determine any accounting, financial, tax, legal, regulatory, reporting, inventory-valuation, cost-allocation, costing-method, pricing, margin, profitability, manufacturing, procurement, inventory, quality, food-safety, compliance, operational, or business status; calculate, allocate, classify, record, reconcile, validate, model, analyze, estimate, forecast, report, audit, select, recommend, or decide any overhead, cost, inventory, product, price, margin, profit, financial statement, tax, accounting treatment, method, policy, record, payment, or transaction; or provide accounting, financial, tax, legal, regulatory, business, manufacturing, procurement, inventory, or operational advice.
Source note
References for this definition
This source supports the terminology on this page. It is not a substitute for an organization’s own records, policies, financial statements, contracts, qualified advisers, or applicable requirements.
Building commercial workflows with CPG design partners
Help shape a clearer way to keep product context and operating handoffs connected.
A working prototype validated Guidance’s core operating model. The commercial rebuild is translating that proof into production-ready workflows with CPG design partners.
Apply as a Design Partner →