Section 44AB Income Tax Audit: Due Date, Criteria, Audit Report, Penalty

An Income Tax Audit under Section 44AB is an examination of a taxpayer’s books of accounts by a Chartered Accountant to verify compliance with the Income Tax Act. Tax audit is applicable to businesses with turnover exceeding ₹1 crore and professionals with gross receipts above ₹50 lakh.

The turnover limit for businesses increases to ₹10 crore if cash receipts and cash payments do not exceed 5% of total transactions. The due date for filing the tax audit report for FY 2025-26 (AY 2026-27) is 30 September 2026, while taxpayers covered under transfer pricing provisions must file the audit report by 31 October 2026.

Failure to comply with Section 44AB may attract a fee under Section 271B of 0.5% of turnover or ₹1.5 lakh, whichever is lower.

Quick Summary of Tax Audit Under Section 44AB

Key Takeawys

• Tax audit under Section 44AB is mandatory for businesses with turnover above ₹1 crore.
• The turnover limit increases to ₹10 crore if cash transactions do not exceed 5%.
• Professionals must undergo tax audit if gross receipts exceed ₹50 lakh.
• The due date for tax audit filing for FY 2025-26 is 30 September 2026.
• Transfer pricing cases must file the audit report by 31 October 2026.
• Form 3CA/3CB and Form 3CD are mandatory for tax audit filing.
• Failure to file tax audit may attract a fee under Section 271B.
• No fee is levied if reasonable cause for delay is proven.

What is Tax Audit Under Section 44AB?

A tax audit is the examination and verification of books of accounts by a Chartered Accountant from an income tax compliance perspective. Under Section 44AB of the Income Tax Act, taxpayers crossing the prescribed turnover or gross receipt limits are required to get their accounts audited and submit the audit report electronically.

The objective of tax audit is to:

• Ensure proper maintenance of books of accounts
• Verify accuracy of income reported
• Check compliance with tax provisions
• Report deductions, depreciation, and other disclosures correctly

Tax audit helps the Income Tax Department verify whether taxpayers have correctly reported income and complied with applicable tax laws. It also simplifies the computation of taxable income, deductions, depreciation, and other claims.

What is the Due Date for Tax Audit for FY 2025-26?

For Financial Year (FY) 2025-26 corresponding to Assessment Year (AY) 2026-27, the due date for completing and furnishing the tax audit report is:

• 30 September 2026 – For regular tax audit cases
• 31 October 2026 – For taxpayers covered under transfer pricing provisions under Section 92E

The tax audit report must be submitted electronically before filing the Income Tax Return (ITR).

Objectives of Tax Audit

The primary objectives of tax audit under Section 44AB are:

• To verify the accuracy and correctness of books of accounts
• To ensure compliance with provisions of the Income Tax Act
• To report discrepancies identified during audit
• To simplify computation of taxable income and deductions
• To verify claims related to depreciation, expenses, and exemptions
• To help the Income Tax Department assess correct tax liability

A tax audit also improves financial transparency and ensures that taxpayers maintain proper accounting records as prescribed under the law.

What is the Turnover Limit for Income Tax Audit?

A taxpayer is required to get a tax audit conducted if the turnover or gross receipts exceed prescribed limits during a financial year.

The applicability limits are:

• ₹1 crore turnover for businesses
• ₹10 crore turnover for businesses where cash receipts and cash payments do not exceed 5% of total transactions
• ₹50 lakh gross receipts for professionals

Apart from the above, tax audit may also apply in certain cases under presumptive taxation schemes.

Example of Tax Audit Applicability

Suppose a business has:

• Annual turnover of ₹7 crore
• Cash receipts of 3%
• Cash payments of 2%

In this case, tax audit may not apply because cash transactions are within the 5% limit and the enhanced turnover threshold of ₹10 crore becomes applicable.

However, if cash receipts or cash payments exceed 5%, the normal turnover threshold of ₹1 crore will apply.

Tax Audit Applicability Under Section 44AB

The following categories of taxpayers are required to get their books of accounts audited under Section 44AB of the Income Tax Act:

Tax Audit Under Presumptive Taxation

Tax audit may also become applicable under presumptive taxation schemes in the following situations:

Section 44AD

Tax audit becomes mandatory if:

• The taxpayer declares profit lower than the prescribed presumptive rate, and
• Total income exceeds the basic exemption limit

Section 44ADA

Professionals opting for presumptive taxation under Section 44ADA must get tax audit done if:

• Profit declared is less than 50% of gross receipts, and
• Total income exceeds the exemption limit

Sections 44AE, 44BB & 44BBB

Tax audit is applicable where taxpayers declare lower profits than prescribed under these presumptive taxation provisions.

Situations Where Accounts are Already Audited Under Another Law

If a taxpayer has already got the books of accounts audited under another law, a separate audit under the Income Tax Act is not required.

For example:

• Companies audited under the Companies Act
• Cooperative societies audited under state laws
• Trusts audited under applicable statutes

In such cases, the taxpayer only needs to furnish the prescribed tax audit report under Section 44AB before the due date of filing the return.

What Constitutes a Tax Audit Report?

The tax auditor must furnish the audit report in prescribed forms depending on the applicability.

Form 3CA

Form 3CA is applicable where the taxpayer is already required to get accounts audited under another law.

Form 3CB

Form 3CB is applicable where the taxpayer is not required to undergo audit under any other law.

Form 3CD

Form 3CD is a detailed statement containing particulars related to:

• Turnover and receipts
• Expenses and deductions
• Depreciation
• TDS compliance
• GST details
• Related party transactions
• Loans and advances
• Other disclosures under the Income Tax Act

Form 3CD must be filed along with either Form 3CA or Form 3CB.

Form 3CE

Form 3CE applies to non-residents and foreign companies receiving royalties or technical service fees from the Government or Indian concerns.

How to File Tax Audit Report Online?

The tax audit report must be filed electronically through the Income Tax Department’s e-filing portal by a Chartered Accountant.

The process generally involves:

1. Taxpayer adds the Chartered Accountant on the e-filing portal
2. Chartered Accountant prepares and uploads the audit report
3. Taxpayer reviews the uploaded report
4. Taxpayer accepts or rejects the report online
5. Once accepted, the audit filing process is completed

If the taxpayer rejects the audit report, the process must be repeated until acceptance.

Penalty for Non-Filing or Delay in Filing Tax Audit Report

If a taxpayer fails to get accounts audited as required under Section 44AB, a fee under Section 271B may be levied. The fee shall be lower of:

• 0.5% of total sales, turnover, or gross receipts, or
• ₹1,50,000

As proposed in Budget 2026, this amount will now be treated as a fee instead of a penalty to reduce litigation.

Non-compliance with tax audit provisions may also result in:

• Notices from the Income Tax Department
• Delay in processing returns
• Increased scrutiny
• Additional compliance burden

Reasonable Causes for Delay in Filing Tax Audit Report

No fee under Section 271B may be imposed if the taxpayer can prove a reasonable cause for failure to comply.

Some commonly accepted reasonable causes include:

• Natural calamities
• Resignation of accountant or key employees
• Resignation of tax auditor leading to delay
• Labour strikes or lockouts
• Loss of accounts due to circumstances beyond control
• Serious illness or death of the person handling accounts

Courts and tribunals have accepted such genuine hardships in various cases.

Benefits of Tax Audit

Tax audit offers several advantages to businesses and professionals, including:

• Improved accuracy of financial reporting
• Better compliance with tax laws
• Easier calculation of taxable income
• Proper maintenance of accounting records
• Reduced chances of tax notices and penalties
• Better financial transparency and credibility

It also helps taxpayers identify accounting discrepancies and rectify them before filing returns.

Bottom Line

Tax audit under Section 44AB is an important compliance requirement for businesses and professionals exceeding prescribed turnover or gross receipt limits. Understanding tax audit applicability, due dates, turnover thresholds, and filing requirements can help taxpayers avoid notices, fees, and legal complications.

Timely compliance with tax audit provisions also improves financial transparency and ensures accurate reporting of income, deductions, and tax liability. Businesses and professionals should maintain proper books of accounts and seek professional guidance wherever necessary to ensure smooth and compliant tax filing.