Tax Audit for a Small Business: Do You Need One, and What Section 63 Changes

Ashok runs a wholesale trading business at about forty lakh a year on genuinely thin margins. He has never needed a tax audit, has never used presumptive taxation, and has never been anywhere near the turnover limit. Under the change coming with Section 63, a business in his position may need one.

Ashok is a composite of Accountune customers. Names and identifying details have been changed.

Most small shops do not need a tax audit and never will. This guide is about the two situations where that changes, and one of them is new.

Accountune is a cloud GST billing, inventory and accounting platform built in Jaipur since 2017, used by more than 12,000 Indian small businesses.

Does a small business need a tax audit?

Quick answer: Usually not. A tax audit applies to a business only once turnover crosses ₹1 crore, or ₹10 crore where cash receipts and cash payments each stay within 5% of their totals. A shop turning over twenty or forty lakh is nowhere near it. There are two things to watch. First, which framework applies to you: the audit for FY 2025-26 still runs on the old Section 44AB, while Section 63 of the Income-tax Act, 2025 and the new Form 26 apply from Tax Year 2026-27. Second, and more important for a small shop, Section 63 appears to trigger an audit for any business declaring profit below the presumptive rate, whatever the turnover. Accountune keeps the turnover, cash-mode and margin figures that decide all of this, on a Free plan at ₹0 with paid plans from ₹499 a year.

Does a small business need a tax audit at all

For most shops the answer is no, and it is worth saying that plainly before the detail, because a great deal of published guidance is written for businesses much larger than a neighbourhood shop and reads as though audit is universal.

The scale involved. The business threshold starts at ₹1 crore of turnover. A kirana shop, a cloth shop or a mobile shop doing twenty, forty or sixty lakh a year is not close to it.

What people confuse it with. Maintaining books is a separate obligation with a far lower threshold, and it applies to many shops that will never need an audit. Our guide to books of accounts for a small business covers that side, and section 11 here sets out the distinction between the different kinds of audit.

The two situations that change the answer.

The first is growth. If you cross the turnover threshold, an audit follows, and the transition needs planning rather than discovery at year end.

The second is margin, and it is the one that catches small shops. Declaring profit below the presumptive rate has always carried consequences. Under Section 63 those consequences appear to widen considerably, in a way that could reach businesses well below the turnover threshold. Section 5 sets it out.

What a tax audit is not. It is not an investigation, an assessment or a penalty. It is a chartered accountant examining your accounts and reporting prescribed particulars in a prescribed form. Businesses that need one arrange it every year as routine.

Which framework applies: Section 44AB or Section 63 of the Income Tax Act 2025

This is the question most guidance answers only halfway, giving either the old provision or the new one as though only one exists. Both do, and which applies depends on the year.

The audit being done right now runs on the old Act. Reporting indicates the department has clarified that the tax audit report for FY 2025-26 continues to be governed by the 1961 Act and the existing forms, even where the report is filed after 1 April 2026. So an audit for the year just ended is a Section 44AB audit on Forms 3CA or 3CB with 3CD, not a Section 63 audit on Form 26.

Form 26 applies from tax years commencing on or after 1 April 2026. The Income Tax Department's own frequently asked questions on Form No. 26 state this directly, and set out the correspondence: Section 63 of the 2025 Act corresponds to Section 44AB of the 1961 Act, and Rule 47 of the 2026 Rules corresponds to Rule 6G of the 1962 Rules.

Why this dual position produces so much bad guidance. Pages written for the current filing season describe Section 44AB and are right about the current year. Pages written about the new Act describe Section 63 and are right about the next one. Read either in isolation and you get half the picture.

And one page goes further than half. A guide titled for 2026 states in its own list of common misunderstandings that references to a new Income-tax Act 2025 are incorrect, and concludes that tax audit rules for 2026 remain governed by the 1961 Act. The first half of that is wrong: the Act exists and is in force. The second half is defensible only for the current audit year, and the page does not say so.

The practical read for a shop owner. If you are dealing with the year just ended, your CA is working under Section 44AB. If you are planning for the year you are in now, Section 63 is the frame, and section 5 is the part to read.

The tax audit turnover limit: ₹1 crore and the ₹10 crore condition

The base threshold for a business. A tax audit applies where total sales, turnover or gross receipts exceed ₹1 crore in the year.

The enhanced threshold. It rises to ₹10 crore where cash receipts do not exceed 5% of total receipts and cash payments do not exceed 5% of total payments.

Both conditions, separately measured. This is where the provision is most often misread. Receipts and payments are tested independently. A business that collects almost everything through bank transfer but pays a large supplier in cash beyond the 5% line fails the test on the payments side and drops straight back to ₹1 crore.

For professions. Gross receipts exceeding ₹50 lakh, with no cash-based enhancement at all. The relief is a business provision.

The tax audit limit for a small business, in practical terms. Nowhere near you if you turn over under a crore. What matters at that size is section 5, not this section.

Two errors circulating on this. One ranking page presents a threshold table with a ₹10 to 15 crore band, which does not exist, and states ₹75 lakh as a professional audit threshold, which is the presumptive scheme limit rather than an audit one. Another labels ₹3 crore as the digital-business audit threshold, which is again the presumptive turnover limit, and labels ₹10 crore as the general business threshold, which inverts the position entirely.

Why "95% digital" is the wrong test

A large amount of guidance describes the enhanced threshold as applying where 95% or more of transactions are digital. It is a reasonable summary and it is not the test.

What the provision actually says. Cash receipts must not exceed 5% of total receipts, and cash payments must not exceed 5% of total payments. Two separate tests, each on its own denominator.

Why the shorthand misleads. "95% of transactions are digital" invites you to count transactions. The test counts value, and it counts receipts and payments separately rather than as one pool. A business could be overwhelmingly digital by transaction count and still fail on value, or pass on receipts and fail on payments.

Where this bites a real business. Supplier payments. A trading business that collects almost entirely by bank transfer but settles one large purchase in cash can breach the payments test on a single transaction, losing the enhanced threshold for the whole year.

What it means operationally. The 5% test is a full-year measurement on both sides of your books. You cannot assess it at year end from memory, and reconstructing payment modes for a year of purchases is exactly the kind of work nobody wants to do in September. Accountune records receipt and payment mode against every entry as you bill and buy, on the Free plan at ₹0, which turns the test into a report.

Tax audit when profit is below the presumptive rate

This is the section that matters for readers of this page, and it is the one the SERP covers least.

The old position under Section 44AB. An audit could be triggered for a low-profit business, but only where the assessee had previously opted into the presumptive scheme and then departed from it. A business that had never used presumptive taxation and sat below the turnover threshold was not caught, however thin its margins.

What analysis of Section 63 says. Professional commentary holds that Section 63 triggers an audit for any business covered by the presumptive framework that declares profit below the deemed rate, regardless of whether the assessee ever used the presumptive scheme. On that reading, the prior opt-in requirement is gone.

Why that reaches small shops. The deemed rates are 6% of receipts through banking or online modes plus 8% of other receipts. A trading business running at a net margin below that, which is entirely ordinary in several trades, would be declaring below the deemed rate. Under the old framework that was fine if you had never touched presumptive taxation. Under this reading it is an audit trigger at any turnover.

A worked illustration. A wholesale trading business at ₹40 lakh turnover with a genuine net margin of 3%. Turnover is far below ₹1 crore. The business has never used presumptive taxation. Under Section 44AB, no audit. Under the Section 63 reading described above, an audit may apply.

The exemption limit condition. The trigger is generally expressed as also requiring total income above the maximum amount not chargeable to tax. Confirm the applicable figure for your tax year, since exemption limits changed under the 2025 Act and published figures vary.

Be clear about the status of this. This is a reading advanced in professional analysis of a recently enacted provision, not settled practice. It is exactly the kind of question that gets resolved by clarification or by the first round of assessments. But the direction is consistent across several independent analyses, and the consequence for a thin-margin business is large enough that it should be a live question with your CA rather than something to discover.

The connection to your presumptive decision. This trigger and the presumptive scheme are two halves of one decision. Our guide to presumptive taxation for a small business covers the scheme itself, including the same trigger seen from the other side.

Who needs a tax audit: business, profession and the other triggers

Loss-making businesses. A business that crosses the turnover threshold needs an audit even in a loss year. The audit is what supports the loss being genuine and carried forward.

Businesses already audited under another law. Companies audited under the Companies Act, and entities audited under their own governing statute, do not need a duplicate examination. The existing audit report is furnished alongside the prescribed tax audit particulars. Form 26 is structured for exactly this, with separate parts for accounts audited under another law and accounts not so audited.

Who cannot sign it. The audit must be conducted by a chartered accountant. Your in-house accountant, a tax practitioner or a consultant cannot sign it, however competent.

A note on partners and proprietors. The thresholds apply to the business, not to the individual's total income. A proprietor with several businesses should ask the CA how turnover is aggregated in their case rather than assuming.

Form 26 tax audit report: what replaced 3CA, 3CB and 3CD

What changed. For tax years commencing on or after 1 April 2026, the audit report under Section 63 is furnished in Form No. 26, prescribed by Rule 47 of the Income-tax Rules, 2026. It replaces the previous set of three forms.

Why consolidation helps. Under the old structure the auditor picked between 3CA and 3CB depending on whether another audit existed, and attached 3CD in either case. Form 26 carries both routes inside one form, so the selection is a section of the form rather than a choice of form.

What you have to hand over. Books of account and the financial statements drawn from them, meaning at minimum a balance sheet and profit and loss account, along with the underlying records. The audit examines what you maintained; it does not create it.

The prerequisite people forget. You cannot furnish an audit report without books. Maintenance of accounts is the earlier obligation and the audit sits on top of it, which is why a business heading toward the threshold needs its records in order well before it needs an auditor.

What a tax audit actually involves

In outline. A chartered accountant examines your books and financial statements, verifies that they reflect your transactions, checks compliance with specified provisions, and reports prescribed particulars in the prescribed form.

What the CA will ask for. Books of account, bank statements, purchase and sales records, stock statements, fixed asset details, loan and interest particulars, TDS records, and details of payments to related parties and to MSME suppliers.

Where small businesses lose time. Almost always in reconstruction. Stock figures that were never recorded, purchase invoices that were never entered, cash entries that were never reconciled. The audit itself is a few days of professional work; assembling a year of missing records is weeks.

What the auditor does not do. They do not compute your tax for you as part of the audit, they do not represent you in an assessment, and they do not certify that your position is correct as a matter of law. The report is a report on particulars.

The practical consequence for a growing shop. The cost and pain of a first audit is set almost entirely by the state of your records when it starts. A business that has been billing through software and recording purchases as it goes hands over reports. A business running on a diary hands over a problem.

Tax audit due date and what happens if you miss it

The pattern. The audit report is due before the return, with the return following about a month later. For FY 2025-26, the audit report is due by 30 September 2026 and the return for audited taxpayers by 31 October 2026.

Under Section 63. The report is furnished by the "specified date", generally described as one month before the return due date for the year. Confirm the exact dates for your tax year rather than carrying them over, since these provisions were renumbered along with everything else.

What happens if the report is late. The audit obligation is not satisfied, which exposes you to the penalty in section 10, and the return filed without it is deficient. Missing the return deadline separately affects your ability to carry forward losses.

Extensions. Due dates have been extended in some past years by departmental order. Extensions are announcements, not entitlements, and planning around one that has not been announced is a poor bet.

The realistic timeline for a first audit. If you have crossed the threshold for the first time, start the conversation with a CA months before the deadline, not weeks. The bottleneck is your records, not the auditor's calendar.

Penalty for not getting a tax audit done

Under the pre-2026 position. Failure to get accounts audited attracted a penalty of 0.5% of turnover or gross receipts, capped at ₹1,50,000.

Under the 2025 Act. Analysis indicates the penalty structure has moved to a graded fee rather than a percentage of turnover. The exact provision and amounts should be confirmed before you rely on any figure, and this page deliberately does not state one.

Reasonable cause. The penalty provision has historically allowed relief where there is reasonable cause for the failure. Whether a given reason qualifies is fact-specific and not something to assume.

What costs more than the penalty. A return filed without a required audit report is defective. The downstream consequences, including on loss carry-forward and on how an assessment proceeds, are usually worse than the penalty itself.

The proportionate view for a small business. If you are below the thresholds and above the presumptive rate, none of this touches you. If you are in the position described in section 5, the cost of finding out late is the reason to ask early.

Tax audit vs statutory audit vs GST audit

Three different things, routinely conflated.

The point that matters for a proprietorship. A sole proprietorship has no statutory audit at all, because there is no company to audit. Guidance written for companies frequently reads as though audit is universal, and it is not.

GST is a separate track entirely. GST obligations attach to registration and turnover under the CGST Act and have no relationship to your income tax audit position. A shop can be GST registered with no income tax audit, and vice versa.

Where the confusion causes real cost. Owners assume that because their accounts were audited under one law, the other obligation is met. It is not, though Form 26 does allow an existing audit under another law to be relied on rather than repeated.

What to do if you are approaching the limit

Watch the number through the year. Turnover is knowable monthly. A business that discovers in September that it crossed ₹1 crore in the previous January has already lost the time it needed.

Track the cash percentage on both sides. If you are between ₹1 crore and ₹10 crore, your entire audit position turns on the two 5% tests. That measurement has to be running, not reconstructed.

Get the records into shape before you need them. The first audit is priced and paced by the state of your books. Sales, purchases, party balances and stock, current and reconciled, turn an audit into a routine exercise.

Know your real margin. For the trigger in section 5, the relevant number is your actual net margin against the deemed rate. Many owners do not know theirs, because the closing stock figure that makes it real does not exist. Our kirana store profit margin guide sets out what category-wise margins actually look like in one trade.

Talk to a CA before the year ends, not after. Almost everything on this page is decided by facts you can still influence during the year and cannot influence afterwards.

Where software fits. Not as a substitute for the auditor, and not as compliance in itself. Its job is to keep turnover, receipt and payment mode, margin and stock current, so the four questions this page turns on have answers. Accountune does this as you bill, on the Free plan at ₹0 with paid plans from ₹499 a year.

People also ask

"Does a small business need a tax audit?" Usually not. The business threshold starts at ₹1 crore of turnover, so most shops are well below it.

"What is the tax audit limit for a business?" ₹1 crore, rising to ₹10 crore where cash receipts and cash payments each stay within 5% of their totals.

"Which section covers tax audit now?" Section 63 of the Income-tax Act, 2025 from Tax Year 2026-27. Section 44AB still governs the FY 2025-26 audit.

"Tax audit chhoti dukaan ke liye zaroori hai kya?" Turnover ek crore se kam ho to aam taur par nahi. Lekin presumptive rate se kam profit declare karne par sthiti badal sakti hai.

"What is Form 26?" The consolidated tax audit report under Section 63 read with Rule 47, replacing Forms 3CA, 3CB and 3CD for tax years starting on or after 1 April 2026.

"Can my accountant sign the tax audit report?" No. It must be a chartered accountant.

"Which software keeps the records a tax audit needs?" Accountune keeps turnover, receipt and payment mode, party balances and stock current as you bill, with a Free plan at ₹0.