Tax Audit Applicability for AY 2026-27: Section 44AB Limits, ₹10 Crore Rule & Presumptive Tax

For AY 2026-27, the first tax-audit question is not which form to file. It is whether Section 44AB applies at all. For FY 2025-26, the Income-tax Act, 1961 continues to govern the audit obligation, even though the Income Tax Act, 2025 took effect from 1 April 2026 for later tax years. The Income Tax Department has specifically confirmed that AY 2026-27 tax audits continue under the old Act and use Forms 3CA/3CB with Form 3CD.

For businesses, the headline threshold is ₹1 crore, but it can rise to ₹10 crore where both cash receipts and cash payments stay within the statutory 5% limits. For professionals, the general gross-receipts threshold is ₹50 lakh. Presumptive-taxation cases under Sections 44AD and 44ADA require a separate analysis because turnover alone does not always answer the audit question.

Quick answer: Who needs tax audit for AY 2026-27?

Situation	AY 2026-27 tax-audit position
Business turnover up to ₹1 crore	Generally no audit solely because of turnover; presumptive-taxation and other special cases still need separate review.
Business turnover above ₹1 crore	Tax audit generally applies unless the enhanced ₹10 crore threshold is available.
Business turnover up to ₹10 crore with low cash usage	The ₹10 crore threshold can apply only where BOTH cash receipts and cash payments are each not more than 5% of the respective totals.
Profession gross receipts above ₹50 lakh	Tax audit generally applies under Section 44AB(b).
Eligible professional using Section 44ADA	Presumptive taxation can apply up to ₹50 lakh, or up to ₹75 lakh where cash receipts do not exceed 5%; declaring lower profit can create an audit requirement in specified cases.
Eligible business using Section 44AD	Presumptive taxation can apply within the statutory turnover limit; audit consequences depend on whether the presumptive conditions and Section 44AD(4)/(5) restrictions are satisfied.

Why AY 2026-27 is a transition-year trap

The new Income Tax Act, 2025 applies from 1 April 2026, but the Department's transition FAQs make an important distinction: AY 2026-27 relates to income of FY 2025-26, so the old Income-tax Act, 1961 continues to govern that year's return, audit and related proceedings. The Department also confirms that the tax-audit report for AY 2026-27 is due on 30 September 2026 and continues to use Form 3CA or Form 3CB together with Form 3CD.

This matters because professionals may now be handling two compliance frameworks at the same time. AY 2026-27 is still an 'assessment year' under the 1961 Act, while income earned from 1 April 2026 onward moves into the new 'tax year' framework.

Business threshold: ₹1 crore or ₹10 crore?

Section 44AB(a) requires a person carrying on business to get accounts audited where total sales, turnover or gross receipts exceed ₹1 crore in the previous year. However, the same provision substitutes a ₹10 crore threshold where both of the following tests are met:

• Cash receipts do not exceed 5% of aggregate receipts, including sales, turnover and gross receipts.

• Cash payments do not exceed 5% of aggregate payments, including expenditure.

Both conditions must be satisfied. A business with digital collections but substantial cash payments cannot rely on the ₹10 crore threshold merely because customer receipts are mostly non-cash. Section 44AB also treats a non-account-payee cheque or bank draft as cash for this purpose.

Example: When the ₹10 crore threshold actually helps

Assume a trading company has turnover of ₹6.5 crore in FY 2025-26. If cash receipts are only 2% of total receipts and cash payments are 3% of total payments, the enhanced threshold can be relevant and tax audit may not arise solely because turnover exceeds ₹1 crore. If cash payments are 8%, however, the enhanced threshold fails even though receipts are almost entirely digital, and the ordinary ₹1 crore threshold becomes relevant.

The practical lesson is to compute the cash-receipt ratio and cash-payment ratio separately from the final ledger—not from assumptions about the business model.

Professionals: the ₹50 lakh rule and Section 44ADA

For a person carrying on profession, Section 44AB(b) generally triggers tax audit where gross receipts exceed ₹50 lakh. Separately, Section 44ADA allows eligible resident individuals and partnership firms (other than LLPs) carrying on specified professions to use presumptive taxation within its statutory receipt limit.

For AY 2026-27, the Income Tax Department's filing guidance states that Section 44ADA can apply up to ₹50 lakh of gross receipts, with the limit increased to ₹75 lakh where cash receipts do not exceed 5% of total gross receipts. That higher ₹75 lakh figure is a presumptive-taxation eligibility limit; it should not be confused with the general Section 44AB profession threshold of ₹50 lakh.

Where an eligible professional claims profits below the presumptive amount and the statutory conditions are met, Section 44AB can still require an audit. This is why a professional with receipts below ₹50 lakh should not automatically conclude that tax audit is impossible.

How Section 44AD changes the audit analysis for businesses

Section 44AD is a presumptive scheme for eligible businesses. The Department's AY 2026-27 guidance confirms that its turnover ceiling is ₹2 crore in the ordinary case and ₹3 crore where cash receipts do not exceed 5% of turnover or gross receipts.

But the Section 44AD analysis is not merely 'turnover below ₹3 crore = no audit'. Section 44AB contains a specific audit trigger where Section 44AD(4) applies and the taxpayer's income exceeds the maximum amount not chargeable to tax. Accordingly, businesses moving into or out of presumptive taxation should review their prior-year Section 44AD history rather than looking only at the current-year turnover figure.

A practical AY 2026-27 tax-audit decision sequence

• Step 1: Identify whether the activity is business or profession for Section 44AB purposes.

• Step 2: Compute turnover or gross receipts using reconciled books, GST data, bank data and financial statements.

• Step 3: For business turnover above ₹1 crore, separately compute the 5% cash-receipt and 5% cash-payment ratios to test the ₹10 crore threshold.

• Step 4: Review whether Sections 44AD, 44ADA, 44AE, 44BB or 44BBB apply and whether lower-than-presumptive income has been declared.

• Step 5: Check whether accounts are already audited under another law, because that determines whether Form 3CA or Form 3CB is used.

• Step 6: Build the Form 3CD data pack early rather than waiting for the 30 September 2026 audit-report deadline.

Which tax audit form applies after you establish applicability?

Once applicability is established, the next question is form selection. PGT & Associates has a separate guide on Form 3CA vs Form 3CB vs Form 3CD for AY 2026-27, including the distinction between entities audited under another law and those audited only because of Section 44AB.

For the broader compliance picture—including the audit-report deadline and the overall Form 3CD framework—see our Tax Audit for AY 2026-27: thresholds, Forms 3CA/3CB-3CD and 30 September deadline.

Common mistakes that create avoidable tax-audit risk

• Using only sales invoices to compute turnover without reconciling books, GST returns, credit notes and other relevant receipts.

• Testing the 5% condition only on cash receipts and ignoring cash payments.

• Treating the ₹75 lakh Section 44ADA presumptive limit as if it replaces the ₹50 lakh Section 44AB professional-audit threshold.

• Ignoring the Section 44AD(4)/(5) history when an eligible business exits presumptive taxation.

• Assuming the Income Tax Act, 2025 forms apply to AY 2026-27 merely because the new Act is already in force.

• Waiting until late September to decide applicability, leaving too little time for Form 3CD reconciliations and audit evidence.

What documents should be ready before the tax-audit decision is finalised?

• Final or near-final trial balance and ledgers for FY 2025-26.

• Sales and purchase registers reconciled with GST returns where applicable.

• Bank statements and a computation of cash receipts and cash payments.

• Prior-year returns and presumptive-taxation history where Sections 44AD/44ADA may be relevant.

• Details of statutory audits under the Companies Act, LLP Act or other applicable law.

• Schedules needed for Form 3CD reporting, including tax deductions, statutory dues, related-party items and other clause-specific disclosures.

FAQs

Is tax audit compulsory above ₹1 crore turnover for AY 2026-27?

Not always. For business, the threshold can increase to ₹10 crore if both cash receipts and cash payments are each not more than 5% of their respective totals. Presumptive and special-business provisions also need separate review.

Does the ₹10 crore limit apply if only cash receipts are below 5%?

No. Section 44AB requires both the cash-receipt test and the cash-payment test to be satisfied.

Is the professional tax-audit limit ₹50 lakh or ₹75 lakh?

The general Section 44AB professional-audit threshold is ₹50 lakh. The ₹75 lakh figure relates to Section 44ADA presumptive-taxation eligibility where cash receipts do not exceed 5%. The two limits answer different questions.

Which law applies to tax audit for AY 2026-27?

AY 2026-27 continues under the Income-tax Act, 1961. The Income Tax Department has confirmed that Forms 3CA/3CB and 3CD remain applicable for FY 2025-26 / AY 2026-27.

What is the tax-audit report due date for AY 2026-27?

The Income Tax Department's current guidance states 30 September 2026 for the AY 2026-27 tax-audit report.

Primary sources

Income Tax Department — Section 44AB: statutory business/profession thresholds, 5% cash tests and presumptive-taxation audit triggers.

Income Tax Department — Income Tax Forms FAQs: confirms AY 2026-27 forms, thresholds and 30 September 2026 audit-report date.

Income Tax Department — Objective and scope of the New Act FAQs: confirms the old Act continues to govern AY 2026-27 and earlier years.

Professional assistance

Tax-audit applicability often turns on facts that are easy to misclassify—especially turnover computation, cash-ratio testing and presumptive-taxation history. Businesses and professionals that are close to a threshold should complete the applicability review before the audit season becomes deadline-driven. PGT & Associates can assist with Section 44AB applicability, Forms 3CA/3CB-3CD, reconciliations and audit-readiness for AY 2026-27.

Disclaimer

This article is for general professional information and is based on the law and official departmental guidance available as of 18 August 2026. Tax-audit applicability depends on the taxpayer's facts, business or profession, accounting records and other statutory provisions. It is not a substitute for advice on a specific case.