Cost Accounting & Profitability Glossary

An analysis of the profit generated through a specific sales or distribution channel, such as direct sales, distributor networks, retail, or e-commerce. Each channel typically carries a distinct cost structure, including different discount levels, fulfillment costs, and support requirements, which means the same product can generate very different margins depending on how it reaches the customer. Understanding channel profitability helps companies decide where to invest sales and marketing resources and how to price consistently across channels without eroding margin.

Revenue minus variable costs, shown as a dollar amount or percentage. Contribution margin reveals how much each unit sold contributes toward covering fixed costs and generating profit, separate from whatever fixed overhead the business carries regardless of volume. It’s a central input for break-even analysis, since a company needs enough units sold at a given contribution margin to cover all its fixed costs before it turns a profit. Contribution margin also supports volume and mix decisions, such as whether to accept a lower-priced order that still covers variable costs and adds to overall profit.

A measure of the true profit generated by a specific customer once all associated costs, including cost-to-serve, discounts, returns, payment terms, and support requirements, are subtracted from the revenue that customer generates. Customer profitability analysis often reveals that a company’s largest customers by revenue are not always its most profitable, since high-volume customers frequently demand the deepest discounts, fastest turnaround, and most customized service. This insight shapes decisions around pricing, service levels, and even which customer relationships are worth retaining or renegotiating.

Earnings before interest, taxes, depreciation, and amortization. EBITDA measures a company’s core operating profitability by stripping out the effects of financing decisions, tax jurisdictions, and non-cash accounting charges like depreciation. This makes it a useful metric for comparing operating performance across companies, business units, or time periods that might otherwise be distorted by different capital structures or accounting policies. EBITDA is widely used in valuation, lending, and investment decisions, though it has limits: because it excludes depreciation and amortization, it can understate the true cost of capital-intensive operations if used in isolation.

Revenue minus cost of goods sold, expressed as a dollar amount or as a percentage of revenue. Gross margin shows how efficiently a company converts raw materials and labor into revenue before accounting for selling, distribution, and administrative costs. It’s one of the most closely watched metrics because it reflects core production efficiency and pricing power, independent of how the company is run above the factory floor. Gross margin trends over time can reveal whether input costs are rising faster than prices, whether production efficiency is improving, or whether product mix is shifting toward lower-margin items.

Revenue minus all costs, including cost of goods sold, operating expenses, and cost-to-serve, expressed as a percentage of revenue. Net margin reflects true bottom-line profitability and is the most complete single measure of how well a company converts sales into profit. Because it includes every cost layer, from production through customer support, net margin can diverge sharply from gross margin when overhead, distribution, or service costs are out of line. Companies often compare net margin across products, customers, or channels to identify where the business is truly making money versus simply generating revenue.

A measure of the profit a specific product or SKU generates once fully burdened costs, including production, overhead, and distribution, are subtracted from the revenue it generates. Product profitability analysis frequently exposes that a meaningful share of a company’s product portfolio is unprofitable or barely breaking even, often hidden by strong performance elsewhere in the lineup. This visibility supports decisions on pricing adjustments, cost reduction efforts, or discontinuing products that no longer justify the resources required to produce and support them

A structured list of the raw materials, components, and subassemblies required to manufacture a product, along with the quantities of each needed. The BOM is a foundational input for product costing, since it defines exactly what goes into a product and in what amount, allowing material costs to be calculated precisely as component prices change. BOMs also support scenario analysis, such as evaluating the cost impact of substituting one material or supplier for another.

The total cost of getting a finished product from the plant or warehouse into the customer’s hands, including outbound transportation, distribution center handling, packaging, and any customer-specific requirements like special labeling or delivery windows. Cost to deliver often varies more by customer and order type than cost to make does, since delivery requirements, order size, and service expectations differ widely across a customer base. Companies that overlook cost to deliver frequently discover that certain orders or customers erode margin well after the product leaves the factory.

The total cost of acquiring the materials, components, and services needed to make a product, from supplier price through inbound logistics. Cost to source goes beyond the invoice price of a purchased item to include freight, duties, payment terms, minimum order quantities, and supplier reliability, all of which affect the true cost of getting material ready for production. Companies that manage cost to source well typically negotiate not just unit price but total landed cost and evaluate suppliers on the full economic impact of doing business with them, not price alone.

The total cost of a product once it arrives at its final destination, including purchase price, freight, customs duties, insurance, and handling fees. Landed cost gives a company a true picture of what a sourced item actually costs, which can differ substantially from the quoted unit price, especially for imported goods subject to tariffs, currency fluctuations, and long transit times. Companies that price or make sourcing decisions based on unit price alone, without factoring in landed cost, often underestimate true product cost and erode margin without realizing it.

The defined sequence of operations, work centers, and time required to manufacture a product, from raw material through finished good. Routing data, combined with labor rates and overhead rates at each work center, determines the conversion cost of a product, the cost of transforming raw materials into a finished item. Accurate routing information is essential for identifying bottlenecks, evaluating the cost impact of process changes, and building realistic product costs that reflect how a product is actually made rather than how it’s assumed to be made.

The process of analyzing product-level cost and profitability data to identify SKUs that no longer justify the cost of producing, stocking, or supporting them. Companies that expand their product lines over time often accumulate low-volume, high-complexity SKUs that consume disproportionate overhead, inventory carrying cost, and operational attention relative to the revenue they generate. SKU rationalization uses profitability data to make disciplined decisions about which products to simplify, reprice, or discontinue, typically resulting in a leaner, more profitable portfolio.

The costs incurred when a company outsources part of its production process, such as a manufacturing step, assembly operation, or specialized service, to an outside vendor rather than performing it in-house. Subcontractor costs typically include the vendor’s price plus any additional freight, handling, or quality inspection required to bring the work back in-house or ship it directly to the customer. Understanding subcontractor costs at the same level of detail as internal production costs is essential for deciding whether to make, buy, or outsource a given step.

The price charged for goods or services exchanged between divisions, subsidiaries, or related entities within the same company. Transfer pricing directly affects the profitability reported at each business unit or subsidiary, since a higher or lower internal price shifts margin between entities. Because it also has tax implications, particularly for multinational companies operating across jurisdictions with different tax rates, transfer pricing is subject to regulatory scrutiny and generally must be set at an arm’s length rate that reflects what unrelated parties would charge.

The method used to assign a dollar value to raw materials, work-in-process, and finished goods held in inventory, most commonly FIFO (first-in, first-out), LIFO (last-in, first-out), or weighted average cost. The valuation method chosen affects both the cost of goods sold reported on the income statement and the inventory value shown on the balance sheet, particularly when material prices fluctuate over time. Because inventory valuation directly impacts reported margins and taxable income, it’s one of the more closely regulated areas of cost accounting.

The process of calculating the cost rates, such as labor rates, machine rates, or overhead rates, that get applied to production activity to determine total product cost. Rate building typically involves dividing a pool of costs, like total overhead for a work center, by a measure of activity or capacity, like machine hours available, to arrive at a per-unit or per-hour rate. Well-built rates reflect realistic capacity assumptions and are updated regularly; rates built on outdated or overly optimistic capacity assumptions can significantly distort product costs.

The internal billing of shared services or centralized costs back to the business units, departments, or customers that consumed them. Chargebacks make the cost of shared resources, like IT support or a centralized warehouse, visible to the units using them, which encourages more deliberate use of those resources and gives a more accurate picture of each unit’s true cost and profitability. Effective chargeback systems are based on actual usage or a reasonable proxy for it, rather than an arbitrary or purely historical split, so that the units paying the charge see it as fair and actionable.

The costs of centralized functions, such as finance, IT, human resources, or customer service, that support multiple business units, products, or locations rather than a single one. Because shared services benefit the whole organization rather than any one part of it, their costs must be allocated or charged back to the units that use them, which requires a defensible method for measuring usage or benefit. How shared services costs are allocated can materially affect the reported profitability of individual business units, making the allocation methodology an important and sometimes contentious decision.

A secondary output of a production process that has minor value relative to the main product being produced. Unlike co-products, by-products are typically not the primary reason for production and are accounted for differently, often by crediting their sale value against the cost of the main product rather than allocating a full share of joint costs to them.

The total cost of holding inventory over time, including storage space, insurance, obsolescence risk, shrinkage, and the opportunity cost of capital tied up in unsold goods. Carrying costs are often underestimated because they accumulate quietly rather than appearing as a single visible line item, but they can represent a meaningful percentage of inventory value annually, making inventory levels and turnover a direct lever on profitability.

Two or more products of significant value that result from the same production process and shared inputs, where neither product can be produced without also producing the other. Joint costs incurred up to the point where the products become separately identifiable, known as the split-off point, must be allocated between co-products using a method such as relative sales value, since no single product can be said to have caused the entire joint cost on its own.

The cost of meeting regulatory, safety, environmental, or industry-standard requirements, including testing, certification, documentation, reporting, and any process or material changes required to remain compliant. Compliance costs are often treated as a fixed cost of doing business in a given industry or region, but they can vary meaningfully by product line or market, and overlooking them in product costing can understate the true cost of serving certain customers or geographies.

The allocation of a fixed asset’s cost, such as equipment, machinery, or a facility, over its useful life rather than expensing the full cost when purchased. Depreciation is a non-cash expense that still affects reported cost and profitability, since it’s typically included in manufacturing overhead and spread across the units produced using that asset. Because depreciation is fixed regardless of production volume, higher throughput on the same equipment lowers the depreciation cost carried by each unit.

The cost of the energy inputs, such as electricity, natural gas, or fuel, required to run equipment, heat or cool facilities, and power production processes. Energy costs are subject to market price volatility and can represent a significant, fluctuating share of overhead in energy-intensive industries, making them an important variable to model separately in cost and margin forecasts rather than treating as a stable, fixed expense.

A bill of materials broken down to show every component, subassembly, and raw material required to build a product, including the components within each subassembly, rather than stopping at the top-level assembly list. An exploded BOM gives full visibility into every material layer that contributes to a product’s cost, which is essential for accurately costing products with multiple levels of subassemblies and for evaluating the cost impact of a component change anywhere in the structure.

The total cost of the workforce involved in producing a product or delivering a service, including wages, overtime, payroll taxes, and benefits. Labor cost is often split into direct labor, workers directly involved in production, and indirect labor, such as supervisors or maintenance staff, since the two behave differently in a cost model and are typically allocated using different methods.

The cost of the final leg of a delivery, moving a product from a distribution point to its ultimate destination, whether a retail location, a business customer, or an individual consumer. Last-mile delivery is typically the most expensive and complex segment of the entire logistics chain on a per-unit basis, since it involves smaller, more frequent shipments to a wider range of destinations compared to the bulk movement earlier in the supply chain.

The classification of costs by their inherent nature or type, such as materials, labor, utilities, depreciation, or supplies, regardless of which department, product, or cost center incurred them. Natural cost elements are typically how costs first enter the general ledger, before they are later allocated or assigned to products, departments, or activities for management reporting purposes, making them the foundational building blocks beneath any cost allocation model.

The value of the next best alternative given up when a business chooses one option over another, such as the profit forgone by using production capacity for one product instead of a more profitable one. Opportunity cost doesn’t appear directly in financial statements, but it’s a central concept in decision-making, since choosing to allocate limited resources, capacity, or capital to one use always means giving up what could have been earned from the next best alternative use.

The cost of materials and labor required to package a product for shipment or sale, including primary packaging (the container holding the product), secondary packaging (cases or cartons), and any customer-specific packaging requirements. Packaging costs can vary significantly by customer or channel, particularly when customers require specialized packaging, labeling, or unit configurations, making them an important and sometimes overlooked component of cost-to-serve.

The effect that changes in pricing, discounting, or customer and channel mix have on overall revenue and margin, separate from the effect of volume changes. Price mix analysis isolates how much of a revenue or margin change came from selling more or less, as opposed to selling at different prices or through different pricing tiers, which helps companies understand whether performance shifts are driven by demand, competitive pressure, or internal pricing decisions.

The combination and proportion of different products a company sells within a given period. Because products typically carry different margins, a shift in product mix, even with total revenue unchanged, can significantly raise or lower overall profitability. Companies use product mix analysis to understand whether growth is coming from higher-margin or lower-margin products and to guide sales and production planning accordingly.

Material or partially finished product that is lost, discarded, or rendered unusable during the production process. Scrap can result from trim waste, quality defects, machine setup, or process variability, and it represents a real cost since the business has already paid for the material and often the labor invested in it before it was scrapped. Tracking scrap by cause and by production line helps identify where process improvements would have the greatest cost impact.

The process of identifying, evaluating, and selecting suppliers for the materials, components, or services a business needs. Sourcing decisions affect far more than unit price, including quality, lead time, minimum order quantities, payment terms, and supply risk, all of which factor into the true cost and reliability of a supply relationship. Strategic sourcing looks beyond the lowest quoted price to the total cost and risk of a sourcing decision over time.

The cost of electricity, gas, water, and other utility services consumed in production or facility operations. Utilities cost is often a semi-variable cost, with a fixed baseline related to keeping a facility running plus a variable component tied to production volume, such as machines drawing more power when running at higher output. Allocating utilities cost accurately typically requires metering or estimating consumption by department or work center rather than spreading it evenly across the whole facility.

The percentage of available capacity, whether machine hours, labor hours, or facility space, that is actually used in production. Utilization directly affects cost per unit, since fixed costs like equipment and facility expenses are spread across whatever volume is actually produced: low utilization means fixed costs are spread thin, raising cost per unit, while high utilization spreads them more efficiently. Understanding utilization is essential for accurate rate building, since rates calculated on unrealistic utilization assumptions will misstate true product cost.

The percentage of usable output produced from a given quantity of input material or a given production run. Yield accounts for the reality that not every unit of raw material or every unit produced makes it through to a saleable finished good, due to trim loss, defects, or process variability. Because yield directly affects how much material and time is actually required to produce a saleable unit, it’s a critical driver of true product cost, and even small yield improvements can meaningfully lower cost per unit at scale.

A costing method that assigns all manufacturing costs, both variable costs like materials and labor and fixed costs like factory overhead, to the units produced. Under absorption costing, every unit carries a share of fixed overhead, which means reported product cost and profitability can shift based on production volume alone, since fixed costs are spread across more or fewer units depending on how much was made. Absorption costing is required under most external financial reporting standards, even though it can obscure the difference between cost changes driven by efficiency and cost changes driven purely by volume.

A costing method that assigns only variable production costs, such as direct materials, direct labor, and variable overhead, to units produced, treating fixed manufacturing overhead as a period expense rather than a per-unit cost. Direct costing gives a clearer view of how cost and margin change with volume, since it isolates the truly variable component of product cost, making it useful for internal decision-making even though it isn’t accepted for external financial reporting in most jurisdictions.

A costing method that tracks the actual materials, labor, and overhead applied to a specific job, project, or customer order, treating each one as a distinct cost object. Job costing is common in businesses that produce customized, made-to-order, or low-volume, high-variation products, where costs can differ substantially from one job to the next and a single average cost wouldn’t reflect reality for any individual order.

The additional cost incurred to produce one more unit of a product, typically driven by variable costs alone since fixed costs don’t change with a single additional unit. Marginal cost is a key input for pricing decisions at the margin, such as whether to accept an additional order at a lower price, since as long as the price covers marginal cost and contributes something toward fixed costs, the order adds to overall profit.

A costing method that spreads total production costs evenly across all units produced during a period, used when products are identical or nearly identical and pass through a continuous, standardized production process. Process costing fits industries with high-volume, homogeneous output, such as bulk chemicals or commodity food products, where tracking cost job by job wouldn’t be practical or meaningful.

The rate applied to direct labor or machine hours to allocate indirect manufacturing costs, such as overhead, benefits, and facility expenses, to product cost. Burden rate essentially converts indirect costs into a per-hour or per-unit charge that can be added to direct material and labor cost to build a complete product cost, and it needs regular updating as overhead spending and production volume change.

A cost center is a part of a business, such as a production department or IT function, that is responsible for controlling costs but does not directly generate revenue. A profit center is a part of the business responsible for both revenue and costs, and is evaluated on the profit it generates. Classifying business units this way shapes how performance is measured and what managers are held accountable for, cost control alone versus overall profitability.

Anything for which cost is separately measured, such as a product, customer, service, project, or department. Identifying the right cost object is the starting point of any costing exercise, since it defines exactly what question the cost analysis is trying to answer, whether that’s the cost of a product, the cost of serving a customer, or the cost of running a department.

A grouping of individual costs that share a common cause or driver, accumulated together so they can be allocated as a single group to the products, departments, or activities that use them. Cost pools are a core building block of allocation methods like activity-based costing, since grouping similar costs together, such as all costs related to machine setup, allows for a single, more meaningful allocation rate rather than allocating each individual cost separately.

Direct costs can be traced specifically and exclusively to a particular product, customer, or job, such as the raw materials in a specific product or the labor hours spent building it. Indirect costs support multiple products, customers, or activities at once and cannot be traced to a single output without some form of allocation, such as facility rent or supervisory salaries. This distinction is foundational to cost accounting, since it determines which costs can be assigned directly and which must be allocated using a chosen method or driver.

A cost that has already been incurred and cannot be recovered, regardless of what decision is made going forward. Sunk costs should not factor into future decisions, since they don’t change based on the choice being made, but they’re frequently and mistakenly factored in anyway, a well-documented bias that can lead businesses to continue investing in a failing product or project simply because of money already spent.

Amounts subtracted from an invoice or payment by a customer, often related to promotions, damaged goods, shortages, compliance fines, or disputed charges. Deductions reduce realized revenue below the amount originally invoiced, and unmanaged or unresolved deductions are a common, often underestimated drain on margin, particularly in distribution and consumer goods businesses with high order volumes and complex trade terms.

A retroactive discount paid to a customer or received from a supplier, typically based on reaching a specified volume, spend threshold, or performance target over a defined period. Because rebates are often calculated and paid after the fact, they can be easy to lose track of in real-time margin reporting, and businesses that don’t accrue for expected rebates throughout the period risk overstating margin until the rebate is finally recognized.

The money a manufacturer or supplier spends to support the sale of its products through retail or distribution partners, including promotions, discounts, slotting fees, and co-op marketing funds. Trade spend directly reduces net revenue and, if not tracked carefully against the sales it’s meant to drive, can quietly erode profitability even as gross sales appear strong.