Cost and Management Audit · Audit of Different Service Organisations

Audit of IT, Telecom and Other Service Sectors

Updated 11 October 2026 · Fact-checked

Auditing an IT, telecom or utility company means understanding how it earns revenue and incurs cost, then testing cost records, project costing, capacity use and service quality against set benchmarks. You identify cost drivers, check allocation, evaluate controls, and report findings with recommendations for improvement.

Understand Audit of IT, Telecom and Other Service Sectors

A service organisation has no stock of finished goods. Its output is performed and consumed at the same time. So cost is mostly people, technology, network and energy, and the audit cannot rely on stock checks. You audit processes, time records, capacity and outcomes.

In an IT and software firm, the main cost is people. Each project has its own cost: developer and tester time, software licences, cloud hosting, travel and subcontractors. The audit asks whether timesheets are accurate, whether bench (unbilled) staff cost is treated properly, and whether project overruns are tracked against estimates. Fixed-price projects need extra care, because cost to complete decides profit.

In a telecom company, the cost base is heavy in network assets: towers, fibre, spectrum, switching equipment and power. Costs are largely fixed, so the audit looks at cost per subscriber, cost per minute or per GB, network utilisation, revenue leakage, and service quality such as call drop rate, uptime and complaint resolution time. Spectrum and licence fees need correct amortisation over their period.

In power and other utilities, the audit looks at generation or distribution cost, fuel cost, line losses, plant availability and tariff-linked cost. Regulated tariffs mean costs must be properly identified and segregated. Since service quality is a regulatory concern, it is checked along with cost.

A management audit view goes beyond cost accuracy. It asks whether resources are used economically, efficiently and effectively. In every sector, you compare actual with budget, standard or benchmark, find the reason for the gap, and recommend action.

Key rules to remember

Cost per unit of service: Cost per unit = Total cost of service ÷ Units of service delivered; Units differ by sector: billable hour, subscriber, minute, GB, kWh sold.
Capacity utilisation: Capacity utilisation % = (Actual output ÷ Available capacity) × 100; Used for network, plant and billable staff. Low utilisation means fixed cost per unit rises.
Staff utilisation: Utilisation % = (Billable hours ÷ Available hours) × 100; Key for IT firms. Bench time is not billable.
Project profit (fixed price): Profit = Contract price − (Cost incurred + Estimated cost to complete); Expected loss must be recognised in full once it is foreseen.
Percentage of completion: Completion % = (Cost incurred to date ÷ Total estimated cost) × 100; One common measure of progress. Check that the method is applied consistently.
Distribution loss: Loss % = [(Units input − Units billed) ÷ Units input] × 100; Used for power distribution. Compare with the regulator's allowed level.

How to solve Audit of IT, Telecom and Other Service Sectors questions

Use the same frame for any question on auditing a service sector, whether it is IT, telecom or a utility.

1Identify the business model: how the entity earns revenue and what the main cost driver is.
2List the cost elements and classify them as direct, indirect, fixed and variable. Name the cost unit for the sector.
3Check how costs are collected and assigned: timesheets, project codes, network cost pools, plant-wise records.
4Test the cost records against source documents, and test the allocation and apportionment basis for consistency.
5Compare actual with budget, estimate or benchmark. Compute utilisation, cost per unit and variances.
6Evaluate service quality measures and regulatory or contractual compliance.
7Identify weaknesses in control and wastage, and state the effect on cost or service.
8Conclude with specific recommendations and the reporting position.

Quickest way: Driver–Record–Benchmark–Fix

When to use it: Use for short descriptive questions where you have around ten minutes and need a structured answer.

Driver: name the main cost driver and cost unit of the sector.
Record: say which records you will examine, such as timesheets, project files, network logs or meter data.
Benchmark: state what you will compare with, such as budget, estimate, regulator norm or past period.
Fix: write two or three recommendations linked to the findings.
If figures are given, compute the utilisation or cost per unit first, then comment on it.

Common mistakes in Audit of IT, Telecom and Other Service Sectors

Treating a service company like a manufacturer and discussing stock verification and material usage.
Most audit practice questions use factory examples.
Fix: Start with the service output, time and capacity. Mention inventory only where relevant, such as spares or fuel.
Ignoring bench or idle capacity cost in an IT firm and loading it to projects.
Students want every cost to be charged to a project.
Fix: Show idle time as a separate cost and report it. Charge projects only for productive time.
Covering only cost and leaving out service quality in telecom and utilities.
The word 'cost audit' suggests figures alone.
Fix: Always add quality measures such as uptime, call drop, complaint resolution and supply interruptions.
Recognising profit on a fixed-price project without checking the estimate to complete.
Billing and profit are mixed up.
Fix: Re-estimate remaining cost, test the completion measure, and provide in full for any expected loss.
Giving general comments with no recommendation.
Students stop at findings.
Fix: End each finding with a concrete action and the likely effect on cost or service.

Worked examples

Example 1

A software firm has 50 developers, each available for 160 hours a month. In a month, 6,400 hours were billed to clients. Total monthly cost of the development team is ₹60,00,000. Compute staff utilisation and cost per billable hour, and comment.

Show the solution

Available hours = 50 × 160 = 8,000 hours.
Utilisation = 6,400 ÷ 8,000 × 100 = 80%.
Cost per billable hour = ₹60,00,000 ÷ 6,400 = ₹937.50.
Cost per available hour = ₹60,00,000 ÷ 8,000 = ₹750.
Unbilled hours = 1,600. Cost of idle time at ₹750 = ₹12,00,000.

Answer: Utilisation is 80% and cost per billable hour is ₹937.50. The 1,600 unbilled hours cost ₹12,00,000, which should be reported separately. The audit should check the reasons for bench time, such as training, lack of projects or poor allocation, and recommend better resource planning.

Example 2

A telecom operator has a network capacity of 20,00,000 GB a month and carried 15,00,000 GB. Monthly network cost is ₹3,00,00,000, treated as fixed. Compute capacity utilisation and cost per GB carried. What would the cost per GB be at 90% utilisation, and what should the auditor comment on?

Show the solution

Utilisation = 15,00,000 ÷ 20,00,000 × 100 = 75%.
Cost per GB = ₹3,00,00,000 ÷ 15,00,000 = ₹20.
At 90% utilisation, traffic = 18,00,000 GB.
Cost per GB = ₹3,00,00,000 ÷ 18,00,000 = ₹16.67 (approximately).
Saving per GB = ₹20 − ₹16.67 = ₹3.33 (approximately).

Answer: Utilisation is 75% and cost per GB is ₹20. At 90% it would fall to about ₹16.67. The auditor should comment that the cost is largely fixed, so unused capacity raises unit cost. The auditor should also review demand forecasting, capacity planning and service quality such as congestion and uptime, and recommend steps to raise utilisation without lowering quality.

Exam tips

Write the cost unit for the sector first. Examiners look for it.
In case-based MCQs, read for the cost driver and the benchmark. The answer usually depends on one of them.
In descriptive answers, always pair a cost point with a service quality point.
Show utilisation and cost per unit workings in steps, even if short, to earn method marks.
Close each answer with a recommendation, as the paper tests application rather than recall.

Practice questions from Audit of Different Service Organisations

Audit of IT, Telecom and Other Service Sectors: frequently asked questions

What is the main cost driver in an IT services company?

It is people, mainly developer and tester time. So the audit focuses on timesheets, billable utilisation, bench cost and project-wise cost against estimate.

How is the audit of a telecom company different from a manufacturing audit?

There is no finished stock, and cost is mostly fixed network cost. The audit looks at capacity utilisation, cost per subscriber or per unit of data, revenue leakage and service quality measures.

Why is service quality part of a management audit in utilities?

Utilities are judged by regulators and customers on reliability as well as cost. A low cost with poor supply or frequent outages is not effective performance, so both must be reported.

How do you audit the cost of a software development project?

Compare actual cost with the project estimate. Check timesheets, licence and hosting charges, subcontractor costs and the estimate to complete. For fixed-price projects, test the completion measure and provide for expected losses.