Industries That Benefit from Process Costing

Process costing is one of the most practically relevant cost accounting methods in manufacturing. As defined by the Chartered Institute of Management Accountants (CIMA), it is the costing method applicable where goods or services result from a sequence of continuous or repetitive operations or processes, with costs averaged over the units produced during the period. In short, instead of tracking the cost of each individual unit, businesses accumulate costs at each stage of production and divide the total by the number of units manufactured. This makes it an ideal fit for industries where goods are homogeneous, produced in large volumes, and flow through multiple standardized stages. So, which industries actually rely on this method – and why?

What makes an industry suited for process costing? 🔗

Not every manufacturing setup calls for process costing. It works best when three conditions are met: production is continuous or repetitive, the output is uniform across units, and tracking individual item costs would be impractical or economically inefficient. According to NetSuite, process costing is generally used by manufacturers that produce a large volume of identical items – industries such as oil refining, food production, chemical processing, textiles, glass, cement, and paint. The method assigns costs not to individual units but to the production process itself, making it far more efficient for high-output environments.

It’s also worth distinguishing process costing from job costing. AccountingTools explains that process costing is used when similar products are mass-produced and costs associated with individual units cannot be differentiated, while job costing tracks all direct and indirect costs for each custom item or project. A construction firm building bespoke homes uses job costing; a cement plant producing thousands of identical bags uses process costing.

Key industries that apply process costing 🔗

Chemical manufacturing 🔗

The chemical industry is one of the most natural fits for process costing. Project Manager notes that chemical manufacturers – including producers of paints, fertilizers, and cleaning agents – use process costing to divide total production costs across each gallon, liter, or tablet produced. The production process typically runs continuously for weeks or months, involving stages such as mixing, heating, chemical reaction, cooling, and packaging. Each stage adds value and incurs costs, but it would be practically impossible and economically inefficient to track costs per individual unit. In a chemical plant producing bulk detergents, for instance, costs are accumulated by department as the product flows through mixing, heating, and packaging – with the homogeneous nature of the output making individual cost tracing impractical.

The pharmaceutical sector follows the same logic. Consider a company producing aspirin tablets – raw compounds pass through mixing, heating, reaction, cooling, and compression. Process costing accumulates all costs for the production run and divides them by the total tablets produced, enabling consistent pricing and efficient identification of cost inefficiencies.

Textile manufacturing 🔗

The textile industry perfectly illustrates how process costing handles sequential production stages. A textile company producing rolls of fabric uses process costing because production is continuous and all units are identical – costs for raw materials, dyeing, and weaving are averaged over the total output to determine the cost per yard of fabric.

Raw cotton enters the mill and moves through carding, spinning, weaving, dyeing, and finishing. Each stage transforms the material further, adding both value and cost. Process costing in textile manufacturing helps companies track and allocate expenses at each production stage, supports accurate pricing decisions in a highly competitive global market, and helps identify where production costs can be reduced. A denim manufacturer, for example, cannot realistically track the cost of individual threads – but process costing captures costs effectively at each departmental stage.

Food processing industry 🔗

Food manufacturing is another high-volume, continuous production environment where process costing is indispensable. The food processing industry, which includes activities such as milling, baking, canning, freezing, and packaging, deals with large volumes of products that move through sequential processes – and process costing helps determine the cost per unit for each food product.

Take a cereal manufacturer: grains pass through cleaning, cooking, shaping, toasting, and packaging. Or consider a dairy plant – milk goes through pasteurization, separation, homogenization, and packaging, yielding multiple products such as whole milk, skim milk, cream, and yogurt. As Katana MRP explains, a company producing canned goods or beverages uses process costing to determine the cost per unit by allocating costs incurred during processing, packaging, and labeling. This gives dairy and food companies the data they need to make informed decisions about product mix and pricing.

Oil refining 🔗

Oil refining is arguably the most complex application of process costing. Oil refineries use process costing to allocate costs associated with refining crude oil into gasoline, diesel, and other by-products. Since the refining process is continuous and products are indistinguishable at each stage, costs are accumulated and divided by total output. From initial distillation of crude oil to the various refining steps, the method helps determine the cost per barrel of refined petroleum products.

What makes oil refining particularly interesting is the concept of joint products – a single barrel of crude oil yields gasoline, diesel, jet fuel, lubricants, and petrochemicals simultaneously. In the oil and gas industry, process costing helps calculate the cost per barrel or unit of oil produced, factoring in drilling, refining, transportation, and storage costs. It also supports product profitability analysis, allowing refineries to identify which products generate the highest margins and adjust production accordingly.

Paper mills 🔗

Paper manufacturing is a classic example of a capital-intensive, continuous production industry where process costing is essential. The process involves converting wood chips into pulp, then progressing through pulping, cleaning, bleaching, and paper machine operations. A paper company tracks the cost of each stage in turning wood pulp into reams of paper, then divides the total cost by the number of reams to get the cost per ream. Each stage requires significant capital equipment and operates continuously to maintain efficiency – making individual unit tracking neither practical nor useful.

Paper producers allocate expenses per ream in continuous pulp processing, which supports transparent pricing and accurate profitability assessment. Whether producing newsprint, packaging board, or specialty paper, the cost-per-ton figure derived through process costing is central to pricing and operational planning.

How process costing supports cost control and pricing 🔗

Beyond simply calculating unit costs, process costing provides a powerful framework for ongoing cost management. Fishbowl highlights that by analyzing expenses at each stage of production, companies can spot inefficiencies in the use of raw materials, labor hours, or overhead, and take action to reduce waste. This stage-by-stage visibility is particularly valuable in industries like chemicals or food processing, where even marginal cost improvements translate into significant savings across millions of units.

Process costing also plays a direct role in inventory valuation. Brightpearl explains that by averaging costs across all units, process costing ensures more consistent inventory valuation – which is especially important for businesses that need to comply with accounting standards such as GAAP and IFRS. Additionally, the method supports strategic decision-making: precise unit cost data enables businesses to set prices that cover their expenses, protect profitability, and plan future budgets with confidence.

For industries operating on thin margins – such as food processing or commodity chemicals – a fraction-of-a-cent change in process costs can represent a large dollar change in overall profitability when selling millions of units per month. This makes the per-unit cost figure derived through process costing not just an accounting figure, but a genuine operational management tool.

Continuous vs. repetitive process industries 🔗

It’s useful to distinguish between two types of industries that use process costing. Continuous process industries – like oil refining, chemical manufacturing, and steel production – run 24/7 with no interruption, and production flow is constant. Repetitive process industries – like food processing, textile manufacturing, and beverage production – produce standardized products with some variation in specifications. Both types rely on process costing because their operations are characterized by standardized methods, large output volumes, and the inability to trace costs to individual units. The method is equally relevant whether a factory runs non-stop or in regular production cycles.

Beyond these core sectors, process costing also finds application in electronics assembly (for standardized components), plastic products manufacturing (through extrusion and molding), and the steel industry (processing iron ore and coal into steel products through continuous stages). In the automotive industry, it is used to determine the cost of standardized processes like assembly, painting, welding, and quality control – particularly for mass-market vehicle models where production is repetitive and uniform.

Why process costing remains relevant today 🔗

The core logic of process costing hasn’t changed – but its application has become more sophisticated. Modern manufacturing software now automates the accumulation and allocation of costs across departments in real time, making it easier for companies to generate accurate cost-per-unit figures without extensive manual effort. Predictive analytics capabilities use historical cost data and current production trends to forecast period-end cost results, enabling proactive management before overruns affect financial performance.

Ultimately, process costing is not just an accounting formality. For any industry operating in a mass production environment with standardized, continuous processes, it is the most practical and reliable way to understand true production costs, set competitive prices, maintain profitability, and make data-driven decisions about resource allocation. Process costing helps ensure financial transparency, supports pricing decisions, and improves overall cost control across departments and production cycles – making it an indispensable tool for modern manufacturers.

What do you think? Given how many industries rely on process costing for pricing and profitability, do you think businesses operating on very thin margins – like food processors or commodity chemical producers – should invest more heavily in stage-by-stage cost analysis? And as manufacturing becomes increasingly automated, how might real-time cost data from smart production systems change the way companies apply process costing principles?

References

1. https://en.wikipedia.org/wiki/Process_costing
2. https://www.netsuite.com/portal/resource/articles/accounting/process-costing.shtml
3. https://www.accountingtools.com/articles/process-costing-process-cost-accounting
4. https://www.projectmanager.com/blog/process-costing-manufacturing
5. https://theintactone.com/2023/05/16/process-costing-features-steps-uses-advantages-disadvantages/
6. https://katanamrp.com/process-costing/
7. https://commerceiets.com/applications-of-process-costing-in-different-industries/
8. https://grokipedia.com/page/Process_costing
9. https://www.fishbowlinventory.com/blog/process-costing
10. https://www.brightpearl.com/blog/process-costing