Cost Accounting · Operating Costing - Transport, Hotel and Healthcare

Operating Costing: Meaning and Features for CMA Inter

Updated 10 October 2026 · Fact-checked

Operating costing, also called service costing, is a method of ascertaining the cost of providing a service rather than making a product. You pick a suitable cost unit, such as a passenger-km or a room-day, collect period costs, and divide total cost by total units of service for the period.

Understand Operating Costing: Meaning and Features

Some businesses sell no goods. A bus company, a hotel, a hospital, a school and a power supplier sell services. You cannot store a service, and there is usually no material that turns into a finished article. Still, management needs to know what each unit of service costs. Operating costing, also called service costing, does this.

The method suits any business where the output is a service, the activity is continuous, and costs are mostly incurred over a period. Typical examples are transport (bus, goods truck, railway), hotels, hospitals, canteens, power and water supply, and educational institutions. Internal service departments of a factory, such as a boiler house or a canteen, can also be costed this way.

Main features

The output is intangible and cannot be stored. Production and consumption happen together.
Costs are collected for a period (month, quarter, year), not for a job or batch.
Fixed or standing costs are usually a large share of total cost. Examples are depreciation, insurance, licence fees and salaries.
Direct materials are small or absent. The cost is mostly expenses and labour.
The cost unit is chosen to suit the service. It may be a simple unit (per km, per room-day, per bed-day, per kWh) or a composite unit (passenger-km, tonne-km, patient-day) that combines two measures.
Costs are normally classified into fixed (standing), semi-variable (maintenance) and variable (running) charges. This grouping helps cost control.

Composite units. A composite unit multiplies two measures. A bus carrying 40 passengers for 10 km gives 400 passenger-km. A truck carrying 5 tonnes for 100 km gives 500 tonne-km. Composite units are used when the service varies in two ways, such as load and distance.

Difference from unit and job costing. Unit (output) costing applies to a standard product made continuously; cost per unit is total cost divided by units produced. Job costing applies to products made to a customer's order, with a separate cost sheet for each job. Operating costing applies to services, with no physical product, costs collected for a period and a service-based unit.

Key rules to remember

Cost per unit of service: Cost per unit = Total cost for the period ÷ Total units of service for the period; Use the same period for cost and units. Units may be simple or composite.
Passenger-km (absolute): Passenger-km = Number of passengers × Distance travelled; Use passengers actually carried when the question gives them; otherwise use the stated capacity × proportion.
Tonne-km (absolute): Absolute tonne-km = Σ(Load in tonnes × Distance in km); Sum trip by trip when load differs on each leg, e.g. outward and return.
Commercial (average) unit: Commercial tonne-km = Average load × Total distance travelled; Average load is the simple arithmetic mean of the loads carried, e.g. (load outward + load return) ÷ 2, not a distance-weighted mean. Do not confuse it with absolute tonne-km, which is Σ(tonnes × km).
Charge per unit with profit: Rate charged = Cost per unit + Profit per unit; If profit is a percentage on takings, rate = Cost per unit ÷ (1 − profit % of takings).

How to solve Operating Costing: Meaning and Features questions

Use this order for any operating costing question, whether it is transport, hotel or hospital.

1Identify the service and choose the cost unit the question asks for (passenger-km, room-day, bed-day, tonne-km).
2List all costs for the period and convert annual figures to the period asked, such as one month.
3Classify costs into standing (fixed), maintenance (semi-variable) and running (variable) charges.
4Compute total units of service. Apply capacity, occupancy or load factors carefully, and use the right days or km.
5Prepare the cost sheet with a column for total cost and a column for cost per unit.
6Divide total cost by total units. Add profit if the question asks for a rate to charge.
7Write the answer with the unit and state any assumption, for example days in the month.

Quickest way: Total cost over total service units

When to use it: Use when the question gives clean cost data and asks only for cost per unit of one service measure.

Add all costs for the period into one total, converting any annual item first.
Compute one number for total service units, for example 30 days × 20 rooms × 60% occupancy.
Divide. Check that the unit in your answer matches the question.
If asked for charge rate, add the profit per unit last.

Common mistakes in Operating Costing: Meaning and Features

Treating operating costing as job costing because each trip or patient looks like a job
Students see separate customers and assume separate cost sheets.
Fix: Remember that operating costing collects costs for a period and divides by units of service. No job-wise cost sheet is made.
Using the wrong cost unit, such as per km instead of per passenger-km
The question names the vehicle or hotel, and students skip the unit asked.
Fix: Underline the unit in the question first and write it beside the final answer.
Using annual costs against monthly units
Insurance, tax and depreciation are given yearly, while running data is monthly.
Fix: Convert every cost to the same period before totalling.
Ignoring occupancy or load factor when computing units
Students use full capacity as actual service delivered.
Fix: Multiply capacity by the occupancy percentage, for example 20 rooms × 60% = 12 rooms occupied.
Listing features without linking them to services
Students recall general costing points rather than service-specific ones.
Fix: In theory answers, stress intangible output, period-wise costs, high fixed costs and composite units, each with an example.

Worked examples

Example 1

A bus company runs one bus on a route of 40 km one way. The bus makes 3 round trips a day for 25 days in a month and carries on average 30 passengers on every one-way journey. Total cost for the month is ₹2,70,000. Find the cost per passenger-km.

Show the solution

Km per round trip = 40 × 2 = 80 km.
Daily km = 80 × 3 = 240 km. Monthly km = 240 × 25 = 6,000 km.
Passenger-km = 30 passengers × 6,000 km = 1,80,000 passenger-km.
Cost per passenger-km = ₹2,70,000 ÷ 1,80,000 = ₹1.50.

Answer: Cost per passenger-km = ₹1.50

Example 2

A hotel has 20 rooms and is open for 30 days in a month. Occupancy is 60%. Total cost for the month is ₹1,80,000. The hotel wants a profit of ₹50 per room-day occupied. Find the cost per occupied room-day and the rent to charge.

Show the solution

Room-days available = 20 × 30 = 600.
Room-days occupied = 600 × 60% = 360.
Cost per occupied room-day = ₹1,80,000 ÷ 360 = ₹500.
Rent to charge = ₹500 + ₹50 = ₹550.

Answer: Cost per occupied room-day = ₹500; rent to charge = ₹550 per room-day

Exam tips

Theory questions often ask for features and applicability. Give four or five points, each with a one-line service example.
For the difference between operating and job costing, write a short two-column comparison on basis, output, period and cost unit.
In MCQs, check whether the question asks for absolute or commercial units before multiplying.
In numericals, show the cost sheet layout and the unit calculation separately so you earn step marks even if one figure is wrong.
Write the unit with every final answer, such as ₹ per passenger-km.

Practice questions from Operating Costing - Transport, Hotel and Healthcare

Operating Costing: Meaning and Features: frequently asked questions

What is operating costing in simple words?

It is a costing method for businesses that provide services. You collect the costs of a period and divide them by the units of service delivered, such as passenger-km or room-days.

What is the difference between operating costing and job costing?

Job costing tracks cost for each customer order, with its own cost sheet. Operating costing collects cost for a period for a continuous service and divides by a service unit. Job costing deals with products made to order, operating costing with services.

What is a composite cost unit?

It combines two measures into one unit. Examples are passenger-km, tonne-km and patient-day. It is used when the service depends on both quantity and distance or time.

Which industries use operating costing?

Transport, hotels, hospitals, power and water supply, canteens, schools and similar service businesses use it. Service departments inside factories can also be costed this way.