What Is Income Tax Audit Under Section 44AB?
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 for stakeholder protection), a tax audit is specifically designed to verify the correctness of income and expenditure reported in the ITR, ensure compliance with Income Tax Act provisions, and enable accurate assessment by the Income Tax Department.
The audit culminates in two key documents: Form 3CA or Form 3CB(the auditor's main report) and Form 3CD — a comprehensive 44-clause statement covering every aspect of financial and tax compliance. These are uploaded by the CA on the Income Tax e-filing portal and must be filed before 30th September 2026 for FY 2025-26.
Failure to file the audit report by 30th September attracts a penalty of 0.5% of turnover — up to ₹1,50,000 — under Section 271B. Since audit-liable taxpayers cannot file their ITR until the audit report is uploaded, audit delays also trigger Section 234F late filing fees and Section 234A interest on outstanding tax.
Taxvio, based in Khatauli (Muzaffarnagar, UP), provides end-to-end tax audit services for proprietors, firms, LLPs, and companies. Our CA-led team handles books of accounts review, Form 3CA/3CB and all 44 clauses of Form 3CD, GST-books reconciliation, TDS Clause 34 verification, and timely portal upload — across Uttar Pradesh and pan-India — starting ₹4,999.
Who Is Liable for Tax Audit Under Section 44AB — FY 2025-26?
Business Turnover > ₹1 Crore
Section 44AB(a)
Any person carrying on business with total sales, turnover, or gross receipts exceeding ₹1 crore in the FY — proprietors, firms, LLPs, companies.
Digital Business > ₹10 Crore
Section 44AB(a) proviso
Enhanced limit of ₹10 crore if aggregate cash receipts ≤ 5% of total receipts AND cash payments ≤ 5% of total payments (95%+ digital transactions).
Professional Receipts > ₹50 Lakh
Section 44AB(b)
Doctors, lawyers, CAs, architects, engineers, film artists, and other specified professionals with gross receipts exceeding ₹50 lakh.
Presumptive 44AD Opt-Out
Section 44AB(e)
Person eligible for 44AD who declares profit lower than 6%/8% of turnover. Audit required regardless of turnover level.
Presumptive 44ADA Opt-Out
Section 44AB(e)
Professional opting for 44ADA who declares income lower than 50% of gross receipts. Books must be maintained and audited.
Presumptive 44AE Opt-Out
Section 44AB(e)
Goods carriage operators under 44AE who declare income lower than the prescribed per-vehicle amount.
All Companies
Section 44AB(a)/(d)
All private limited, public limited, and OPC companies are subject to tax audit — there is no turnover threshold for companies.
Cooperative Societies
Section 44AB(d)
Cooperative societies whose income exceeds the basic exemption limit and are not subject to audit under any cooperative society legislation.
LLPs (IT Act Threshold)
Section 44AB(a)
LLPs with turnover > ₹1 crore (or > ₹10 crore if 95%+ digital) face tax audit under Section 44AB, separate from LLP Act audit requirements.
Tax Audit Threshold Limits — Complete Reference (FY 2025-26)
Audit liability can arise even at low turnover if presumptive taxation is opted out. Review every applicable row for your entity type.
| Category | Section | Threshold / Condition | Audit Form | Deadline |
|---|---|---|---|---|
| Business (general) | 44AB(a) | Turnover > ₹1 crore | 3CB + 3CD | 30 Sept 2026 |
| Business (digital — 95% non-cash) | 44AB(a) proviso | Turnover > ₹10 crore | 3CB + 3CD | 30 Sept 2026 |
| Profession | 44AB(b) | Gross receipts > ₹50 lakh | 3CB + 3CD | 30 Sept 2026 |
| Presumptive 44AD opt-out | 44AB(e) | Profit < 6%/8%; any turnover | 3CB + 3CD | 30 Sept 2026 |
| Presumptive 44ADA opt-out | 44AB(e) | Profit < 50% of receipts; any amount | 3CB + 3CD | 30 Sept 2026 |
| Presumptive 44AE opt-out | 44AB(e) | Income < prescribed per-vehicle amount | 3CB + 3CD | 30 Sept 2026 |
| Companies (all) | 44AB(a)/(d) | No threshold — all companies | 3CA + 3CD | 30 Sept 2026 |
| Cooperative Societies | 44AB(d) | Income > basic exemption, no other audit | 3CB + 3CD | 30 Sept 2026 |
| LLPs — IT Act audit | 44AB(a) | Turnover > ₹1 Cr (or > ₹10 Cr digital) | 3CB + 3CD | 30 Sept 2026 |
Form 3CA vs Form 3CB — Which Applies to You?
Companies & Statutory Audit Cases
Form 3CA
Used when the taxpayer is already required to have accounts audited under any other law — primarily companies audited under the Companies Act 2013, or cooperative societies audited under a state cooperative act. The tax auditor relies on the statutory auditor's report and supplements it with Form 3CD.
Applicable to: Private Ltd, Public Ltd, OPC, Section 8 Companies, Cooperative Societies already audited under co-op laws.
Proprietors, Firms & LLPs
Form 3CB
Used when the taxpayer's audit obligation arises only under Section 44AB— not under any other statute. The tax auditor independently examines and certifies the accounts from scratch, without relying on any prior statutory audit.
Applicable to: Proprietors, HUFs, Partnership Firms, LLPs (if not audited under LLP Act separately), individuals in profession.
📋 Both Form 3CA and 3CB are always accompanied by Form 3CD — the 44-clause detailed statement that is the most scrutinised document in any tax audit. Using the wrong form (3CA instead of 3CB or vice versa) is a common compliance error that Taxvio's team catches during the initial review.
Form 3CD — Key Clauses Every Taxpayer Must Understand
Form 3CD contains 44 clauses covering every aspect of tax compliance. Errors in these clauses are the primary trigger for scrutiny additions. Here are the most critical groups.
Business & Accounting Information (Clauses 1–12)
- →Basic information — name, address, PAN, nature of business, method of accounting (Clauses 1–8)
- →Method of accounting — mercantile vs cash basis and effect of any change in method (Clause 11)
- →Valuation of closing stock — method adopted and deviation from standard/consistent practice (Clause 12)
Disallowances & Inadmissible Expenses (Clauses 17–26)
- →Section 40(a) — TDS not deducted or not deposited on payments; payments to non-residents without TDS deduction (Clause 21)
- →Section 40A(2)(b) — payments to related parties (directors, relatives, associated enterprises) at above-market rates (Clause 23)
- →Section 40A(3) — cash payments exceeding ₹10,000 per day in a single transaction — disallowance of such expenses (Clause 22)
- →Section 43B(h) — amounts owed to MSME/Udyam-registered suppliers outstanding beyond 45 days — disallowable (Clause 26)
TDS & TCS Compliance (Clause 34) — High Scrutiny Risk
- →Section-wise summary of TDS deducted, deposited, and any shortfall or delayed deposit (Clause 34a)
- →TCS collected and deposited — section-wise complete summary (Clause 34b)
- →Interest paid under Sections 201(1A) and 206C(7) for delayed TDS/TCS deposit (Clause 34c)
- →This is the most commonly scrutinised clause — errors here directly trigger 40(a)(ia) disallowances running into lakhs.
Depreciation & Fixed Assets (Clause 18)
- →Block-wise depreciation under IT Act rates (different from Companies Act depreciation)
- →New asset additions, disposals, and WDV opening/closing reconciliation
- →Difference between book depreciation and IT Act depreciation — adjustments in Form 3CD and ITR
Other Critical Disclosures (Clauses 28–44)
- →Deductions claimed under Chapter VI-A (80C, 80D, 80G, 80JJAA etc.) — verified against actual eligible amounts (Clause 19A)
- →Brought-forward losses being set off — section and assessment year wise (Clause 42)
- →Deemed dividend under Section 2(22)(e) — loans and advances to shareholders of private companies (Clause 36)
- →Employee contributions — PF, ESI — whether deducted and deposited within due dates (Clause 20)
- →Speculative transactions in shares, commodities, and derivatives (Clause 15)
Books of Accounts — What Must Be Maintained Under Section 44AA
Inadequate or missing books of accounts is the most common reason for audit delays. These must be maintained throughout the year — not assembled at audit time.
Cash Book
Day-to-day record of all cash receipts and payments, entered on the date of transaction.
Journal
Record of all non-cash transactions — credit sales, credit purchases, accruals, and adjusting entries.
Ledger
Consolidated account-wise summary — party accounts, expense heads, income heads, assets, and liabilities.
Stock Register
Item-wise record of opening stock, purchases, sales, and closing stock with rates (for goods businesses).
Fixed Asset Register
Record of all capital assets — purchase date, cost, depreciation rate, WDV, and disposal details.
Bank Statements
All bank accounts reconciled with books. Bank reconciliation statements examined during audit.
Bills & Vouchers
Copies of all sales bills, purchase invoices, and supporting vouchers for every expense claim.
GST Returns
GSTR-1, GSTR-3B, and GSTR-9 reconciled with books of accounts — a key scrutiny area.
📌 Retention period: Books must be preserved for 6 years from the end of the relevant assessment year(8 years if assessments are pending or reassessment notices are received).
Penalties for Non-Compliance with Section 44AB
Non-compliance triggers a cascade of penalties and interest charges that far exceed the audit fee itself. Act before the 30th September deadline.
Section 271B
⚠️ No Audit / Late Report
0.5% of turnover, max ₹1,50,000
Levied when audit not conducted or report not filed by 30th September.
Section 271A
⚠️ Books Not Maintained
₹25,000 penalty
Failure to maintain books of accounts as required under Section 44AA.
Section 234F
⚠️ Late ITR (Audit Case)
₹5,000 late filing fee
Audit delay directly delays ITR filing — triggering automatic 234F penalty.
Section 234A
⚠️ Tax Outstanding Interest
1% per month interest
Interest on outstanding tax for every month of delay after due date.
40(a) Disallowance
⚠️ TDS Not Deducted
Full amount disallowed
Payments where TDS not deducted/deposited — disallowed during scrutiny.
Section 276CC
⚠️ Persistent Non-Filing
Criminal prosecution
Persistent non-filing combined with false reporting can escalate to prosecution.
Taxvio's 6-Step Tax Audit Process — Books to Portal
A tax audit is not just a formality — every Form 3CD clause directly affects ITR accuracy and scrutiny risk. Our structured process ensures complete accuracy.
Audit Applicability Assessment & Digital Ratio Check
We assess Section 44AB applicability — by turnover, professional receipts, or presumptive taxation opt-out. We calculate the cash/digital transaction ratio to determine if the ₹10 crore enhanced limit applies, potentially avoiding audit obligation for qualifying businesses.
Books of Accounts Review & Gap Analysis
Complete review of all books — cash book, journal, ledger, stock register, bank reconciliation, and fixed asset register. Missing records, reconciliation gaps, and accounting errors are identified and corrected before audit procedures begin.
GST-to-Books Reconciliation
Turnover as per books is reconciled with GSTR-1, GSTR-3B, and GSTR-9. Discrepancies between GST returns and income tax books are identified, explained, and documented — this is a primary risk area in current scrutiny assessments.
TDS / TCS Compliance Verification (Clause 34)
Complete TDS deducted vs deposited reconciliation across all sections. All payments subject to TDS are verified for correct deduction and timely deposit. Shortfalls are flagged for rectification before Form 3CD Clause 34 reporting — preventing 40(a)(ia) disallowances.
Form 3CD Clause-by-Clause Completion
All 44 clauses of Form 3CD are completed — disallowances under 40(a) and 40A, cash payment violations under 40A(3), MSME payment compliance under 43B(h), IT Act depreciation schedules, related party transactions, Chapter VI-A deductions, and brought-forward loss set-offs.
Form 3CA / 3CB Preparation, Signing & Portal Upload
Form 3CA (for company/statutory audit cases) or Form 3CB (for other cases) is prepared, reviewed, and signed by the practicing CA. The complete audit package — 3CA/3CB + 3CD — is uploaded on the Income Tax portal before 30th September with acknowledgement preserved for records.
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Documents Required for Income Tax Audit
Preparing these before the audit engagement saves significant time and ensures smooth Form 3CD completion. Share these with our team when engaging Taxvio for audit.
📚 Books & Financial Records
- ✓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
- ✓Loan account statements — term loans, CC limits, OD facilities
- ✓Fixed asset purchase invoices and disposal documents for the year
- ✓Previous year's Form 3CD — for opening figures and prior year disclosure comparison
📋 Compliance & Tax Records
- ✓GST returns — GSTR-1, GSTR-3B, GSTR-9 reconciled with books
- ✓TDS / TCS challans and Form 26AS / AIS of the taxpayer's PAN
- ✓Partnership deed / LLP agreement / MOA (for firms, LLPs, companies)
- ✓Statutory audit report (for companies — required for Form 3CA)
- ✓MSME / Udyam registration certificates of suppliers (for Section 43B(h))
- ✓Related party transaction details — Section 40A(2)(b) specified persons list
- ✓Depreciation schedule (IT Act rates) for all asset blocks for the year
Trusted for Tax Audit Compliance Across India
"Our turnover crossed ₹1 crore for the first time. Taxvio guided us through the full tax audit — books preparation, Form 3CD, and portal upload — all done before September end."
Ramesh Traders
Khatauli
"Complex audit with multiple partner remuneration and TDS issues. Taxvio identified and corrected Clause 34 gaps before reporting — no disallowances in our assessment."
Sharma & Associates LLP
Muzaffarnagar
"Company audit including GST reconciliation with books. Taxvio completed the full audit — statutory and tax — before the September deadline. Highly professional team."
Tech Solutions Pvt. Ltd.
Meerut
Income Tax Audit Services Across India
Taxvio is based in Khatauli, Muzaffarnagar, UP and provides Section 44AB tax audit services for businesses, professionals, firms, LLPs, and companies across Noida, Delhi NCR, Meerut, Ghaziabad, and Mumbai — as well as pan-India online. Our CA team has extensive experience auditing trading businesses, manufacturers, professionals, and service companies across Western UP's sugar, textile, and trading sectors.
Frequently Asked Questions — Income Tax Audit Under Section 44AB
What is income tax audit under Section 44AB?+
Who is required to get a tax audit for FY 2025-26?+
What is the due date for the tax audit report?+
What is the difference between Form 3CA and Form 3CB?+
What is Form 3CD and why is it critical?+
What is the penalty for not getting tax audit done?+
What is the ₹10 crore digital business limit under Section 44AB?+
Deadline: 30th September 2026
Complete Your Tax Audit
Before the September Deadline
Avoid ₹1.5 lakh Section 271B penalty, prevent scrutiny additions from Form 3CD errors, and stay 100% compliant. Taxvio's CA-led tax audit starts at ₹4,999. Serving Khatauli, Muzaffarnagar, Meerut and all of India online.