Cost and Management Accounting · Process & Operation Costing

Process Costing: Meaning and Features for CA Inter

Updated 4 October 2026 · Fact-checked

Process costing is a method of costing used where identical units pass through a series of continuous processes. You collect cost process by process for a period, then divide by output to get cost per unit. Output of one process becomes input of the next. It suits chemicals, textiles, paper and sugar.

Understand Process Costing: Meaning and Features

Some industries make the same product again and again, in a continuous flow. A sugar mill does not make one bag for one customer. Cane enters, passes through several stages, and sugar comes out. You cannot trace cost to a single unit, so you trace it to each stage.

Process costing is the method of costing in which costs are accumulated for each process or department for a period. The cost per unit of a process is found by dividing the total cost of that process by the units produced. The finished output of one process is transferred to the next at its cost, and it becomes a material cost of that next process.

The main features are these:
- Production is continuous and the products are standardised and homogeneous.
- The plant is divided into processes, departments or stages.
- A separate account is kept for each process, showing costs and output.
- Costs are collected for a period (a week or a month), not for an order.
- Normal loss, abnormal loss and abnormal gain often arise, and by-products or joint products may result.
- Work-in-progress usually exists at the end of a period, so equivalent units are needed.

This method is used in chemicals, oil refining, textiles, paper, sugar, cement, food processing, soaps and pharmaceuticals. It also suits some power and water supply situations.

Compare it with job costing. In job costing each job is a separate order made to a customer's specification, and cost is collected per job on a job cost sheet. In batch costing a batch of identical units is treated like a job, and cost per unit is batch cost divided by batch size. In process costing there are no customer orders to trace. Cost is found per process and per period, and the average cost per unit is what you report.

Key rules to remember

Cost per unit of a process: Cost per unit = (Total process cost − Realisable value of normal loss) ÷ Expected output units; Expected output = Input − Normal loss units. Use it when there is no opening or closing WIP.
Total process cost: Material + Labour + Direct expenses + Absorbed overheads + Cost transferred from previous process; The previous process transfer is treated as material in the next process.
Normal loss rule: Normal loss is borne by good units; its scrap value is credited to the process account; Normal loss is unavoidable under normal conditions. Its cost is not charged separately.
Equivalent units (basic idea): Equivalent units = Physical units × Percentage of completion; Needed when closing WIP exists. Detailed method is in the equivalent production topic.

How to solve Process Costing: Meaning and Features questions

For a theory question on process costing, or a basic numerical, follow this order so you cover every mark-earning point.

1Define process costing in one sentence: costs collected process by process for a period, then averaged over output.
2State the conditions that make it suitable: continuous flow, standard product, several stages, output of one process feeding the next.
3List the relevant features, linking each to the question asked, such as losses, WIP or by-products.
4If the question asks for a comparison, draw the points side by side: unit of costing, cost collection, nature of product, customer orders, WIP, cost per unit.
5For a numerical, open a process account with columns for units and amounts. Enter input, materials, labour and overheads.
6Deduct normal loss units to find expected output, and credit the scrap value of normal loss.
7Divide net cost by expected output units to get cost per unit, then value the transfer to the next process.
8Check that units in equal units out, and that debit total equals credit total.

Quickest way: Quick approach for MCQs and written answers

When to use it: Use this when you have a few minutes for a 1-2 mark MCQ or a short theory answer.

For MCQs, look for the keyword in the question. Continuous, homogeneous, standardised output means process costing. Customer order means job costing. Group of identical units made together means batch costing.
Eliminate any option that says cost is collected per order in a process industry. That is job costing.
Remember the phrase: output of one process is input of the next. Options that say processes are independent are usually wrong.
For written answers, use a 4-part format: definition, features as bullets, suitable industries, and a short contrast with job costing.
In a comparison, write five or six points in two columns of text: job costing first, process costing second, so the marker sees each point clearly.

Common mistakes in Process Costing: Meaning and Features

Treating process costing as the same as batch costing because both deal with identical units.
Both involve many similar units, so they look alike.
Fix: Batch costing treats a batch as a job with its own cost sheet. Process costing collects cost per process per period with no batch identity.
Saying that cost is collected for each unit or each order in process costing.
Students carry over the job costing habit.
Fix: Say that cost is collected per process for a period, and unit cost is an average.
Forgetting that cost transferred from the previous process is a material cost of the next process.
The transfer looks like a different kind of item.
Fix: Always show it as a separate line, often called transfer from previous process, in the next process account.
Listing industries without linking them to features, such as saying cement is a process industry with no reason.
Students memorise names only.
Fix: Add one reason: continuous flow, standard product, several stages.
Charging the cost of normal loss separately to the process.
Students treat every loss as a cost to be shown.
Fix: Normal loss cost is absorbed by the good units. Only its scrap value is credited to the process account.

Worked examples

Example 1

Distinguish between job costing and process costing on any five points.

Show the solution

Pick points an examiner expects: nature of work, cost unit, cost collection, customer order, WIP, and cost per unit.
Write each point for both methods in clear contrasting sentences.

Answer: 1. Nature of work: Job costing is used where work is done to customer specification. Process costing is used where production is continuous and standardised. 2. Cost unit: In job costing it is the job. In process costing it is the unit of output of the process. 3. Cost collection: In job costing it is collected for each job on a job cost sheet. In process costing it is collected for each process for a period. 4. Customer order: Job costing work is usually against an order. Process output is produced for stock or general sale. 5. Cost per unit: Job costing finds the cost of each job and a profit can be found for each job. Process costing finds an average cost per unit, so profit by unit of order cannot be found.

Example 2

In Process I, 1,000 units were put in at a total cost of ₹50,000. Normal loss is 10% of input and the scrap is sold at ₹5 per unit. Actual output is 900 units. Find the cost per unit and the value of the output.

Show the solution

Normal loss = 10% × 1,000 = 100 units.
Scrap value of normal loss = 100 × ₹5 = ₹500.
Expected output = 1,000 − 100 = 900 units. Actual output is also 900, so there is no abnormal loss or gain.
Net cost = ₹50,000 − ₹500 = ₹49,500.
Cost per unit = ₹49,500 ÷ 900 = ₹55.
Value of output = 900 × ₹55 = ₹49,500.

Answer: Cost per unit is ₹55 and the value of output transferred is ₹49,500.

Exam tips

Theory questions often ask for the meaning, features and a contrast with job or batch costing. Prepare a ready five-point comparison.
Name at least four industries and one process flow, such as cane to juice to sugar, to show real understanding.
In a numerical, always show normal loss units, scrap value and expected output before you divide.
Check units balance in the process account. Most arithmetic slips show up there.
For MCQs, one keyword (continuous, homogeneous, order) usually decides the answer.

Practice questions from Process & Operation Costing

Process Costing: Meaning and Features in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Process Costing: Meaning and Features: frequently asked questions

What is process costing in simple words?

It is a costing method for continuous production of identical goods. You total all costs of each process for a period and divide by the units produced. The result is an average cost per unit.

Which industries use process costing?

Industries with continuous, standard production, such as chemicals, oil refining, textiles, paper, sugar, cement, soaps and pharmaceuticals. The common point is that goods pass through successive stages.

What is the main difference between job costing and process costing?

Job costing collects cost for each separate order made to specification. Process costing collects cost for each process over a period and averages it over identical units.

Is normal loss a cost in process costing?

Normal loss is unavoidable, so its cost is borne by the good units. You only credit the process account with any scrap value it fetches.