Cost Audit Applicability Under Companies Act: Rule 3 vs Rule 4, Turnover Tests and CRA Timeline

Cost audit applicability under the Companies Act is often misunderstood because maintaining cost records and undergoing cost audit are not the same test. A company can be required to maintain cost records under Rule 3 of the Companies (Cost Records and Audit) Rules, 2014 without necessarily crossing the separate Rule 4 thresholds for cost audit. The safest approach is therefore sequential: first establish whether Rule 3 applies, then test Rule 4, then check exclusions and complete the appointment/reporting cycle.

The official reference point is the Companies (Cost Records and Audit) Rules, 2014 and subsequent amendments. ICMAI maintains a current Cost Accounting Records Rules and Cost Audit Rules resource page, while the Ministry of Corporate Affairs' 2016 amendment rules contain the revised sector tables and compliance provisions that practitioners commonly use while analysing applicability.

Step 1: Test whether Rule 3 requires cost records

Rule 3 is the entry gate. Broadly, the company must be engaged in production of goods or provision of services covered by the prescribed tables, and its overall turnover from all products and services in the immediately preceding financial year must meet the rule's general threshold of ₹35 crore or more. The rules also contain an exclusion for companies classified as micro or small enterprises; practitioners should verify the company's current classification rather than assuming that an older MSME status still applies.

This first step is important because the turnover threshold is not tested only against the turnover of a single covered product. Start with the company's total turnover, identify whether any product/service falls within the prescribed Rule 3 sectors, and document the basis for the classification.

Practical Rule 3 checklist

• List every material product and service of the company.
• Map each to the relevant Rule 3 regulated or non-regulated table entry.
• Confirm total turnover from all products and services for the immediately preceding financial year.
• Check whether the company qualifies for the micro/small enterprise exclusion under the current framework.
• Retain the mapping, turnover workings and supporting financial records in the compliance file.

Step 2: If Rule 3 applies, separately test Rule 4 for cost audit

Rule 4 creates a second filter. The applicable numbers differ for regulated and non-regulated sectors, so practitioners should not use one universal cost-audit threshold.

Regulated sectors

For companies falling within the regulated-sector table, cost audit generally applies when both of these conditions are met in the immediately preceding financial year:

• overall turnover from all products and services is ₹50 crore or more; and
• aggregate turnover of the covered product(s) or service(s) is ₹25 crore or more.

Non-regulated sectors

For companies falling within the non-regulated-sector table, the corresponding tests are:

• overall turnover from all products and services is ₹100 crore or more; and
• aggregate turnover of the covered product(s) or service(s) is ₹35 crore or more.

A useful technical point is that the covered-turnover test is applied on the aggregate turnover of the products/services covered by the relevant table, rather than necessarily requiring every individual covered product to cross the threshold on its own. ICMAI's Technical Cell compilation of queries on the Rules explains this interpretation with applicability examples.

Worked illustration: why Rule 3 and Rule 4 must be separated

Assume a manufacturing company has total preceding-year turnover of ₹120 crore. Of this, ₹28 crore comes from products falling within a non-regulated Rule 3 category and the balance comes from other products.

The company can cross the Rule 3 gateway because its overall turnover exceeds ₹35 crore and it has a prescribed covered product, subject to the other conditions and exclusions. But for non-regulated cost audit, Rule 4 requires aggregate turnover of the covered products/services of at least ₹35 crore in addition to overall turnover of at least ₹100 crore. Here the covered turnover is only ₹28 crore. On those assumed facts, cost records may be applicable while cost audit is not. This is exactly why treating Rule 3 and Rule 4 as a single threshold test can produce the wrong conclusion.

Step 3: Check Rule 4 exclusions before concluding that cost audit applies

Even where the turnover tests are met, Rule 4 contains exclusions. The rules provide relief, subject to the precise conditions, for a company whose revenue from exports in foreign exchange exceeds 75% of its total revenue, a company operating from a Special Economic Zone, and a company engaged in generation of electricity for captive consumption through a captive generating plant.

Do not apply an exclusion merely from a business description. Keep evidence supporting the condition—for example the revenue computation for the export test, documents establishing the SEZ position, or records supporting captive-generation status.

Step 4: Complete the cost-auditor appointment and CRA filing cycle

Once cost audit applies, compliance does not end with the applicability memo. Under Rule 6, the cost auditor is to be appointed within 180 days from the commencement of the financial year. The company gives notice of appointment to the Central Government in Form CRA-2 within 30 days of the Board meeting in which the appointment is made or within 180 days of commencement of the financial year, whichever is earlier.

The cost auditor submits the cost audit report to the Board in Form CRA-3. The company then furnishes the report to the Central Government in Form CRA-4 within 30 days from the date it receives the report, along with the prescribed information and explanations.

Forms and filing mechanics can change even when the conceptual test remains familiar. ICMAI's current official CARR & CAR resource page notes that the MCA revised CRA-2 and CRA-4 with effect from 14 July 2025, so teams should use the current form/version rather than an old internal template.

A practical decision framework for finance and compliance teams

1. Map the activity: identify whether the company's products/services fall in the prescribed regulated or non-regulated tables.
2. Run Rule 3 first: test overall preceding-year turnover and the applicable enterprise-status exclusion.
3. Run Rule 4 second: apply the correct overall-turnover and aggregate-covered-turnover thresholds for the relevant table.
4. Test exclusions: separately document export, SEZ or captive-power exclusions where relevant.
5. Document the conclusion: retain table mapping, audited turnover numbers, covered-turnover reconciliation and exclusion evidence.
6. Calendar the compliance: if cost audit applies, track Board appointment, CRA-2, CRA-3 receipt and CRA-4 filing rather than relying on one year-end reminder.

Common mistakes to avoid

• Assuming that Rule 3 cost-record applicability automatically means cost audit is mandatory.
• Using the ₹35 crore Rule 3 gateway as if it were the cost-audit threshold.
• Applying the regulated-sector threshold to a non-regulated activity, or vice versa.
• Testing covered turnover product-by-product when the relevant test requires aggregate covered turnover.
• Ignoring the specific Rule 4 exclusions after the turnover tests are met.
• Using an old CRA-2 or CRA-4 process without checking the current MCA/ICMAI resources.

Practical takeaway

For a defensible cost-audit conclusion, use a two-stage memo: Rule 3 determines whether prescribed cost records are required; Rule 4 determines whether those covered activities also trigger cost audit. Then apply the correct sector threshold, test exclusions, preserve the workings and calendar the CRA-2 to CRA-4 cycle. Because the sector tables and filing mechanics are change-sensitive, confirm the latest consolidated official rules and forms before finalising each year's applicability assessment.