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Cost and Management Accounting · Activity Based Costing

Benefits, Limitations and Applications of Activity Based Costing (ABC)

Updated 4 October 2026 · Fact-checked

ABC assigns overheads to products through the activities that cause them, using cost drivers. Its benefits are more accurate product costs and better decisions. Its limitations are high cost, data effort and subjective cost pools. It suits firms with high overheads, diverse products and complex operations. Answer with points plus a short reason for each.

Understand Benefits, Limitations and Applications of ABC

Activity Based Costing (ABC) first traces overheads to activities (such as machine setups, inspections, material handling). It then assigns each activity's cost to products using a cost driver, for example number of setups or inspection hours. Traditional costing spreads overheads on one base such as labour hours, which can distort product costs.

The main benefits follow from this. Costs are more accurate, especially where low-volume complex products use more support activities than high-volume simple ones. Management sees why overheads arise. This helps in pricing, product mix, make-or-buy and cost reduction. It also shows non-value-adding activities, so they can be cut. Overheads become more visible and easier to link to responsibility.

The limitations are practical. Identifying activities, cost pools and drivers takes time, money and good data. Many overheads, such as top-management salaries, are hard to trace to activities, so they are allocated arbitrarily. Choosing drivers involves judgement. The system needs updating as operations change. Benefits may not exceed the cost for firms with low overheads or few products. Also, ABC is still based on past costs and does not replace other cost control tools.

Activity Based Management (ABM) uses ABC information to manage the business. ABC is the costing system. ABM is the use of its output to improve performance. ABM looks at activity analysis, cost driver analysis and performance measurement. It aims at eliminating non-value-adding activities, reducing cost drivers and improving processes. Remember: ABC measures, ABM manages.

Applications. ABC suits firms with high overheads relative to direct cost, many products of varying volume or complexity, diverse customers or channels, and fast technology change. It also works in service organisations such as banks, hospitals, hotels, insurers and logistics firms. These have high overheads and few direct material costs. Activities such as account opening, patient admission or claims processing can be costed, and cost per customer or per service can be found.

Key rules to remember

Cost driver rate
Cost driver rate = Cost of activity cost pool ÷ Total cost driver volume
Used to assign each activity's cost to products.
Overhead assigned to a product
Overhead assigned = Cost driver rate × Driver units consumed by the product
Add across all activities to get total overhead for the product.
ABC vs ABM
ABC = costing system; ABM = management use of ABC information
Use this distinction in short notes.

How to solve Benefits, Limitations and Applications of ABC questions

For theory questions such as short notes or 'discuss', use a structured method. For small numerical parts, apply the cost driver rate.

  1. 1Read the verb. 'Discuss' needs both benefits and limitations. 'State' or 'list' needs points only.
  2. 2Open with a one-line definition of ABC, including activities and cost drivers.
  3. 3List benefits in separate points. Add a short reason to each point, not just a heading.
  4. 4List limitations in the same way, linking each to cost, data or subjectivity.
  5. 5If asked about suitability, state conditions such as high overheads, product diversity and complexity. Add a service-sector example.
  6. 6If ABM is asked, define it and state that ABC supplies the data for it.
  7. 7For numbers, compute cost driver rate, then overhead per product, then cost per unit, and state the conclusion.

Quickest way: Four-line short note format

When to use it: Use for 3 to 5 mark written questions, and to eliminate MCQ options quickly.

  1. Line 1: define ABC in one sentence.
  2. Line 2: three benefits with reasons.
  3. Line 3: three limitations with reasons.
  4. Line 4: suitable situations, with a service example.
  5. For MCQs, watch for absolute words such as 'always' or 'eliminates all arbitrary allocation'. They are usually wrong.
  6. If an option says ABC is only for manufacturing, reject it, since ABC applies to services.
  7. If asked which is ABM, choose the option using activity information to improve performance and cut non-value-adding activities.

Common mistakes in Benefits, Limitations and Applications of ABC

  • Treating ABC and ABM as the same thing.

    Both use the word 'activity' and are taught together.

    Fix: Write that ABC is the costing method and ABM is the management approach that uses ABC data.

  • Writing benefits and limitations as bare headings such as 'accuracy' or 'costly'.

    Students rush and give one-word points.

    Fix: Add one explanatory clause to each point, for example 'accuracy, because overheads follow actual resource use'.

  • Claiming ABC removes all arbitrary allocation.

    Students overstate its accuracy.

    Fix: State that facility-level costs still need arbitrary allocation.

  • Saying ABC suits every business.

    Students focus only on benefits.

    Fix: Mention the cost-benefit test. It suits high overheads and diverse products, not simple single-product firms.

  • Ignoring service organisations.

    ABC examples usually involve factories.

    Fix: Add a line on banks, hospitals or logistics, with activities and cost drivers.

  • Missing the link to decisions.

    Students describe costing but not use.

    Fix: Mention pricing, product mix, cost reduction and elimination of non-value-adding activities.

Worked examples

Example 1

Write a short note on the advantages and limitations of Activity Based Costing.

Show the solution
  1. Define: ABC traces overheads to activities and assigns them to products using cost drivers.
  2. Advantages: (1) More accurate product cost, as overheads follow consumption of activities. (2) Better pricing and product-mix decisions, since true profitability is visible. (3) Identifies non-value-adding activities, supporting cost reduction. (4) Better overhead control, as cost drivers explain why costs arise.
  3. Limitations: (1) Costly and time-consuming to design and maintain. (2) Some overheads cannot be traced to activities, so arbitrary allocation remains. (3) Selection of activities and drivers is judgemental. (4) May not be worthwhile for firms with low overheads or few similar products.

Answer: ABC gives more accurate costs and better decisions, but it is expensive, data-heavy and still partly subjective. It pays off mainly where overheads are high and products are diverse.

Example 2

A bank's account-opening activity costs ₹6,00,000 a year and 3,000 accounts are opened. Retail accounts take 2,000 openings and corporate accounts 1,000 openings. Cost driver is the number of openings. Find the cost per account type and state why ABC suits a service firm.

Show the solution
  1. Cost driver rate = ₹6,00,000 ÷ 3,000 openings = ₹200 per opening.
  2. Retail accounts: 2,000 × ₹200 = ₹4,00,000.
  3. Corporate accounts: 1,000 × ₹200 = ₹2,00,000.
  4. Check: ₹4,00,000 + ₹2,00,000 = ₹6,00,000.
  5. Why ABC suits service firms: they have high overheads and little direct material. Activities such as account opening and loan processing can be costed per customer or service.

Answer: Cost driver rate is ₹200 per opening. Retail accounts are assigned ₹4,00,000 and corporate accounts ₹2,00,000. ABC suits services because most costs are overheads linked to activities.

Exam tips

  • Write benefits and limitations in a balanced way. Examiners expect both sides for 'discuss'.
  • Give a reason with each point. This earns marks beyond a bare list.
  • Prepare one line on ABM and one on service-sector use. These are common additions.
  • In MCQs, reject options with absolute claims such as 'ABC is suitable for all organisations'.
  • Where numbers appear, show the cost driver rate separately so you get step marks.

Practice questions from Activity Based Costing

Benefits, Limitations and Applications of ABC in other exams

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

Benefits, Limitations and Applications of ABC: frequently asked questions

What are the main advantages of ABC?

It gives more accurate product costs, helps pricing and product mix decisions, and reveals non-value-adding activities. It also improves overhead control by showing what causes costs.

What is the difference between ABC and ABM?

ABC is a costing system that assigns overheads through activities and cost drivers. ABM uses the information from ABC to improve processes, reduce cost drivers and remove non-value-adding activities.

Can ABC be used in service organisations?

Yes. Banks, hospitals, hotels and logistics firms have high overheads and few direct material costs. Their activities, such as admissions or claims processing, can be costed using suitable drivers.

When is ABC not suitable?

It may not be worthwhile when overheads are low, products are few and similar, or the cost of running the system exceeds its benefits. A cost-benefit check should come first.