What is the tax audit turnover limit for FY 2025-26?

For business: ₹1 crore of turnover — raised to ₹10 crore where both cash receipts and cash payments stay within 5% of the respective totals, which covers most digitally-run businesses. For professionals: ₹50 lakh of gross receipts. The audit requirement sat in section 44AB of the old Act; the same rule continues under the Income-tax Act 2025 (section 63).

My turnover is ₹1.4 crore, almost fully digital. Do I need an audit?

If your cash receipts and cash payments are each within 5% of totals, the audit threshold for you is ₹10 crore, so at ₹1.4 crore no audit is required on the turnover test. Watch two things: non-account-payee cheques count as cash for this test, and the presumptive provisions have their own trap — if you declared presumptive profits earlier and opt out, audit can apply regardless of this limit.

What is the presumptive taxation trap that forces an audit?

If you declared profits under the presumptive scheme (old 44AD) and then in a later year declare lower-than-presumptive profits while your income exceeds the basic exemption, you must maintain books and get audited — and you are barred from presumptive for five years. Professionals under old 44ADA face a similar rule when declaring below 50%. This catches people who used presumptive in good years and want actual (lower) profits in a bad one.

Does F&O trading require a tax audit?

Often not, but check properly: F&O is business income, and its turnover is computed as the sum of absolute profits and losses on trades — not contract values. A trader with modest net profit can still have meaningful turnover, and the presumptive interplay (declaring losses after presumptive years, income above exemption) is what usually triggers the audit, not the ₹10 crore line.

What are Forms 3CA, 3CB and 3CD?

Form 3CD is the detailed statement of particulars — 40-plus clauses covering loans, related-party payments, TDS defaults, cash transactions and more. It is annexed to Form 3CA when your accounts are already audited under another law (like the Companies Act), or Form 3CB when the tax audit is the only audit. The report is filed electronically by the auditor with a UDIN, and you accept it on the portal.

What if the audit report is filed late?

The penalty for failure to get audited or furnish the report is 0.5% of turnover or gross receipts, capped at ₹1.5 lakh — though it can be dropped for reasonable cause. The bigger practical cost: the audit ITR due date (31 October 2026 for FY 2025-26) does not move, and a late audit cascades into a late return with interest and lost carry-forwards.

Tax Audit for FY 2025-26: Limits, Forms & the 30 Sept Date

September is when the phrase “tax audit” starts circulating in WhatsApp groups, usually attached to wrong numbers. The rule itself is mechanical: cross a threshold, or trip a presumptive condition, and your accounts must be audited and reported before your return. Everything difficult about it is in the details — so here are the details, written to the year actually in front of us: FY 2025-26, reported under the new Income-tax Act 2025 regime, where old section 44AB continues its life as section 63.

The applicability table

You are	Audit applies when	Note
Business (normal case)	Turnover exceeds ₹1 crore	Limit rises to ₹10 crore if cash is ≤5% both ways
Business (≤5% cash receipts and payments)	Turnover exceeds ₹10 crore	Non-account-payee cheques count as cash
Professional	Gross receipts exceed ₹50 lakh	Presumptive eligibility (old 44ADA) is a separate ₹75 lakh test
Presumptive opt-out (business)	Declared presumptive earlier, now declaring lower profits with income above the basic exemption	Plus a five-year presumptive lockout
Professional declaring below 50%	Income above the basic exemption	Books plus audit required

The presumptive rows are where good businesses get surprised — our presumptive taxation guide covers the scheme itself. The one-line summary: presumptive is a door that is easy to walk in through and expensive to walk out of.

The FY 2025-26 calendar

30 September 2026 — audit report (3CA/3CB with 3CD) to be furnished.
31 October 2026 — ITR due date for audit cases.
Before both — books closed, reconciliations done, and the auditor appointed early enough to actually audit. A September appointment produces a September-quality audit.

The full deadline picture for the season sits in our September–December 2026 compliance calendar.

What the auditor will actually ask for

Form 3CD is a disclosure engine — it is where TDS defaults, cash dealings, loans taken in cash, related-party payments and delayed MSME supplier payments become visible to the department in structured form. Expect to produce: complete books with bank reconciliations, GST returns tied to the books, loan statements and confirmations, stock records, fixed-asset registers, TDS returns and challans, and details of any cash transactions near the section limits. The clause most owners meet for the first time in an audit: interest to MSME suppliers under the 45-day rule, now a named disclosure.

F&O and share traders: the quiet audit cases

Derivatives income is business income, and its turnover is the sum of absolute profits and losses — a computation most brokers' tax reports now produce. Two patterns to check before filing: a loss year after presumptive years (the opt-out trap above), and AIS data showing trading activity your return treats as capital gains. Both are machine-detectable now, as we covered in how the department's analytics pick returns.

Penalty, and the real cost

The stated penalty is 0.5% of turnover or receipts, capped at ₹1.5 lakh, with a reasonable-cause escape. The real cost is the cascade: a late audit pushes the return late, which brings late-filing fees, interest on unpaid tax, and the loss of loss carry-forwards — a particularly expensive outcome for a trader trying to bank a bad year's losses against a good one.

How we can help

Our tax audit service runs the whole path: applicability check, books cleanup where the year needs it (our backlog accounting team exists for exactly this), coordination of the audit and 3CD, and the audit ITR itself. If you are unsure whether you cross the line this year, that check takes us minutes — ask before September does its thing.

Two-minute check: does tax audit apply to you, and which ITR form? Use the free tool →

Ask if audit applies to you Explore the tax audit service

This article is general information, not tax advice. Thresholds and dates can change by notification; confirm specifics for your year before acting.

Tax audit for FY 2025-26: who needs it, the forms and the 30 September date