Audit · Income Tax Act

Audit — Income Tax Act that keeps you penalty-free.

Tax audit under Section 44AB of the Income Tax Act — Form 3CA/3CB, detailed Form 3CD certification, and timely filing — keeping businesses and professionals penalty-free and fully compliant.

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Tax audit under Section 44AB of the Income Tax Act is one of the most widely applicable audit requirements for Indian businesses. It applies to any business whose turnover exceeds ₹1 crore in a financial year — or ₹10 crore where cash receipts and payments are below 5% of total turnover — and to any professional whose gross receipts exceed ₹50 lakh. It also applies where income is declared below presumptive rates.

The tax audit report — primarily Form 3CD — is one of the most detailed compliance documents in Indian taxation. It covers 44 clauses spanning revenue recognition, deductions claimed, compliance with TDS and TCS provisions, related party transactions, payments in excess of prescribed limits, and more. Every clause requires the auditor to verify facts from the books and certify their accuracy.

At NDS Advisors, our tax audit team combines deep technical knowledge of the Income Tax Act with efficient fieldwork practices — delivering accurate, timely tax audit reports that meet the requirements of the Income Tax portal and hold up to scrutiny in assessments and appeals.

Our Audit — Income Tax Act Services

Tax Audit — Section 44AB

Audit of accounts and certification in Form 3CA or 3CB and detailed Form 3CD for businesses and professionals crossing prescribed turnover or gross receipts thresholds.

Presumptive Taxation Audit (44AD/44ADA/44AE)

Tax audit where income is declared at less than the prescribed presumptive rate — with Form 3CB and Form 3CD certification and income tax return filing support.

Form 3CD Clause-by-Clause Review

Detailed clause-by-clause preparation and review of Form 3CD — covering all 44 clauses with supporting documentation and reconciliations.

TDS & TCS Compliance Verification

Verification of TDS deduction, deposit, and return filing compliance as required by multiple clauses of Form 3CD.

Related Party Transaction Reporting

Identification and reporting of transactions with related parties as required under Section 40A and the applicable Form 3CD clauses.

Disallowances & Additions Review

Review of expenditure that may be disallowed under Sections 40, 40A, and 43B — ensuring correct disclosure in the tax audit report.

Tax Audit for Professionals

Tax audit for doctors, lawyers, architects, consultants, and other professionals crossing the ₹50 lakh gross receipts threshold — with Form 3CB and 3CD.

Tax Audit Filing Support

End-to-end support for uploading the signed tax audit report on the Income Tax portal within the due date — with confirmation of successful submission.

Our Process

1

Threshold Assessment

Confirming whether tax audit applies based on turnover, gross receipts, and the cash transaction ratio for the financial year.

2

Books & Records Review

Collection and review of books of accounts, ledgers, bank statements, GST returns, TDS returns, and other supporting records.

3

Form 3CD Preparation

Clause-by-clause preparation of Form 3CD — with supporting workpapers, reconciliations, and documentation for each disclosure.

4

Audit Report Finalisation

Review of draft Form 3CA/3CB and 3CD with the client, incorporation of feedback, and finalisation of the audit report.

5

Portal Filing

Digital signing and upload of the tax audit report on the Income Tax portal — with confirmation of filing and report acknowledgement.

Why It Matters

Avoids penalty of 0.5% of turnover under Section 271B
Accurate Form 3CD reduces scrutiny in tax assessments
Covers all 44 Form 3CD clauses with supporting documentation
Identifies TDS and TCS compliance gaps before assessment
Timely filing well ahead of the 30 September deadline
Reduces disallowances through proactive pre-audit review
Supports smooth response to income tax notices
Covers businesses and professionals across all sectors

Frequently Asked Questions

Tax audit under Section 44AB is mandatory for any business with turnover exceeding ₹1 crore (₹10 crore where cash transactions are below 5% of total transactions) and for any professional with gross receipts exceeding ₹50 lakh in a financial year. It is also required where income is declared below the applicable presumptive rate.
The tax audit report must be filed on the Income Tax portal by 30 September of the assessment year — that is, 30 September 2025 for FY 2024-25. The due date may be extended by the CBDT in certain years. Filing after the due date attracts a penalty under Section 271B.
Form 3CD is the detailed statement accompanying the tax audit report — covering 44 clauses that require the auditor to verify and certify specific aspects of the taxpayer's accounts. It covers revenue, deductions, TDS compliance, related party transactions, payments above prescribed limits, and more. An inaccurate Form 3CD can attract assessments, penalties, and disallowances.
Section 271B provides for a penalty of 0.5% of total turnover or gross receipts — subject to a maximum of ₹1,50,000 — for failure to get the tax audit done or to furnish the report by the due date. This penalty can be waived if there is a reasonable cause, but the burden of proof lies with the taxpayer.
Yes. The same Chartered Accountant or firm that conducts the statutory audit can also conduct the tax audit — in fact, this is common practice as it allows the auditor to leverage knowledge gained during the statutory audit for the more detailed Form 3CD preparation. There is no prohibition on this.
You should maintain complete books of accounts including a cash book, journal, ledger, and supporting vouchers. Bank statements with reconciliations, GST return copies, TDS certificates and return copies, fixed asset register, stock records, and contracts with related parties are also required. The better organised your records, the faster and smoother the audit.

File your tax audit report on time, every time.

Talk to our tax audit team about Form 3CD preparation, timely filing, and income tax compliance support for your business.