Income Tax Audit Services Under Section 44AB — FY 2025-26

Complete Guide to Income Tax Audit Under Section 44AB (FY 2025-26)

An income tax audit under Section 44AB of the Income Tax Act, 1961 is a mandatory examination of a taxpayer's books of accounts by a practicing Chartered Accountant when prescribed turnover or receipt thresholds are crossed. Unlike a statutory audit under the Companies Act (which is primarily for stakeholder protection), a tax audit is specifically designed to verify the correctness of income and expenditure reported in the income tax return, ensure compliance with various provisions of the Income Tax Act, and enable the Income Tax Department to assess the taxpayer's returns accurately.

The tax audit culminates in two key documents: Form 3CA or Form 3CB (the auditor's main report) and Form 3CD (a comprehensive statement of particulars with 44 detailed clauses covering every aspect of the taxpayer's financial and tax compliance). These documents are uploaded on the Income Tax e-filing portal by the Chartered Accountant and must be filed before 30th September of the assessment year — failing which a penalty of up to ₹1.5 lakh is levied under Section 271B.

Taxvio, based in Khatauli (Muzaffarnagar, UP), provides end-to-end income tax audit services for proprietors, partnership firms, LLPs, and companies across Uttar Pradesh and pan-India. Our CA-led team handles books of accounts review, preparation of Form 3CA/3CB and Form 3CD, coordination with management for clause-wise data, and timely upload on the Income Tax portal — ensuring full compliance before the September deadline.

Who Is Liable for Tax Audit Under Section 44AB — FY 2025-26

Tax audit liability arises in the following situations. It is important to note that crossing a single qualifying criterion makes audit mandatory — there is no discretion:

• Business Turnover Exceeds ₹1 Crore — Any person carrying on business whose total turnover, gross receipts, or total sales exceeds ₹1 crore in the financial year is liable to audit under Section 44AB(a). This threshold applies to proprietors, firms, LLPs, and companies alike.
• Enhanced Limit — ₹10 Crore (Digital Business) — The threshold is raised to ₹10 crore if aggregate cash receipts during the year do not exceed 5% of total receipts AND aggregate cash payments do not exceed 5% of total payments (i.e., 95%+ of transactions are digital/banking). This relief is available to all business taxpayers meeting the digital condition.
• Professional Receipts Exceed ₹50 Lakh — Any person carrying on a profession (doctor, lawyer, CA, architect, engineer, interior designer, technical consultant, film artist, authorised representative, or other specified profession) whose gross receipts exceed ₹50 lakh in the financial year is liable under Section 44AB(b).
• Opting Out of Presumptive Taxation (44AD) — A person eligible for presumptive taxation under Section 44AD who declares profit lower than 8%/6% of turnover is required to maintain books of accounts and get them audited, regardless of turnover level.
• Opting Out of Presumptive Taxation (44ADA) — A professional opting for 44ADA who declares income lower than 50% of gross receipts must maintain books and get them audited.
• Opting Out of Presumptive Taxation (44AE) — A goods carriage operator who declares income lower than the prescribed per-vehicle amount must get accounts audited.
• All Companies — Companies are always required to get their accounts audited — both under the Companies Act (statutory audit) and under Section 44AB (tax audit). There is no turnover threshold for companies.
• Cooperative Societies — Cooperative societies whose income exceeds the basic exemption limit and are not subject to audit under any cooperative society law are required to get tax audit done.

Form 3CA vs Form 3CB — Which Applies to You?

Two separate audit report forms are prescribed under Section 44AB, and using the wrong one is a common compliance error:

• Form 3CA — Used when the taxpayer is already required to have their accounts audited under any law other than the Income Tax Act — for example, a company audited under the Companies Act 2013, or a cooperative society audited under a state cooperative societies act. In this case, the tax auditor relies on the statutory auditor's report and supplements it with the Form 3CD statement.
• Form 3CB — Used when the taxpayer is required to have accounts audited only under Section 44AB — that is, proprietors, partnership firms, LLPs, and HUFs whose audit obligation arises solely from crossing the Section 44AB thresholds and who are not subject to audit under any other statute. The tax auditor independently examines and certifies the accounts.

Both Form 3CA and Form 3CB are accompanied by Form 3CD — the detailed statement of particulars that contains 44 clauses of information about the taxpayer's financial and tax compliance. Form 3CD is the most scrutinised document in a tax audit and must be completed with absolute precision.

Books of Accounts — What Must Be Maintained for Tax Audit

Section 44AA prescribes the books of accounts that must be maintained by persons liable to tax audit. Inadequate or missing books of accounts is a common reason for audit delays and scrutiny:

• Cash Book — Day-to-day record of all cash receipts and payments. Every cash transaction must be entered on the date it occurs.
• Journal — Record of all non-cash transactions including credit sales, credit purchases, expenses accrued, and adjusting entries.
• Ledger — Consolidated account-wise summary of all transactions — individual party accounts, expense heads, income heads, asset accounts, and liability accounts.
• Carbon copies of bills — Copies of all bills issued to customers exceeding ₹25, and bills received from suppliers, duly preserved.
• Original bills/vouchers for expenses — Supporting bills and vouchers for all expenditure claimed as deductions.
• Stock register — Detailed record of opening stock, purchases, sales, and closing stock (item-wise, with rates) for businesses dealing in goods.
• Fixed Asset Register — Record of all capital assets with purchase date, cost, depreciation rate, WDV (Written Down Value), and disposal details.
• Bank Passbook / Bank Statements — All bank accounts must be reconciled with books. Bank reconciliation statements are examined during audit.

Books of accounts must be preserved for 6 years from the end of the relevant assessment year (or 8 years for cases where assessments are pending or reassessment notices are received). Taxvio helps clients set up and maintain accounting systems that are audit-ready throughout the year — not just at year end.

Penalties for Non-Compliance with Section 44AB

Non-compliance with tax audit requirements has serious financial consequences:

• Section 271B — Penalty for Failure to Audit — 0.5% of total turnover/gross receipts, subject to a maximum of ₹1,50,000. Levied when audit is not conducted or audit report is not filed by 30th September.
• Section 271A — Failure to Maintain Books — If books of accounts are not maintained as required under Section 44AA, a penalty of ₹25,000 can be levied.
• ITR filing delayed — Since ITR (for audit cases) cannot be filed until the audit report is uploaded, delay in audit directly delays ITR, triggering Section 234F penalty (₹5,000) and Section 234A interest on outstanding tax.
• Disallowances during assessment — Inaccurate reporting in Form 3CD clauses (especially 40(a), 40A(2)(b), MSME payments, TDS compliance) is a primary trigger for additions and disallowances during scrutiny assessment — often resulting in tax demands far exceeding the original liability.
• Prosecution under Section 276CC — Persistent non-filing, combined with false reporting in Form 3CD, can escalate to prosecution proceedings.

Documents Required for Income Tax Audit

Preparing these documents before the audit engagement saves significant time and ensures a smooth, accurate Form 3CD completion:

• Complete books of accounts — cash book, journal, ledger, stock register, fixed asset register
• Bank statements for all accounts (current, savings, OD, CC) for the full FY
• Bank reconciliation statements for all accounts
• All purchase invoices, sales invoices, and expense vouchers with supporting bills
• GST returns — GSTR-1, GSTR-3B, GSTR-9 reconciled with books of accounts
• TDS / TCS challans and Form 26AS / AIS of the taxpayer's PAN
• Loan account statements — term loans, CC limits, OD facilities
• Fixed asset purchase invoices and disposal documents
• Partnership deed / LLP agreement / Memorandum of Association (for firms, LLPs, companies)
• Statutory audit report (for companies) — Form 3CA requires the statutory auditor's report
• Previous year's Form 3CD — for comparison of opening figures and prior year disclosures
• MSME / Udyam registration certificates of suppliers (for Section 43B(h) compliance)
• Related party transaction details — list of specified persons under Section 40A(2)(b)
• Depreciation schedule (IT Act rates) for all asset blocks