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Tax Audit Limit and Due Date for AY 2026-27: Applicability Guide

Understand the tax audit limit and due date for AY 2026-27 with this comprehensive guide to Section 44AB of the Income Tax Act. Learn about turnover thresholds, tax audit applicability for businesses and professionals, audit report filing deadlines, and key compliance requirements. This guide helps business owners, professionals, and CA students understand tax audit rules and avoid compliance issues.

16 October, 2026

Vikas runs a mobile accessories shop in Nagpur. His turnover last year was ₹1.4 crore, and almost every customer pays by UPI. His friend Imran, who runs a hardware shop with a smaller turnover of ₹1.1 crore, got a tax audit done. Vikas did not.

Both of them were right. The turnover figure alone does not decide a tax audit. How much of the money came in cash matters just as much. Here is the full picture for AY 2026-27.

What is tax audit under Section 44ABA

tax audit is an audit of your books by a Chartered Accountant, done specifically to check whether you have followed income tax rules. It is required under Section 44AB of the Income Tax Act, 1961.

It is different from a statutory audit. A statutory audit is done under the Companies Act and asks whether the accounts are true and fair. A tax audit asks a narrower question: is your taxable income computed correctly?

The CA submits the report in Form 3CA or 3CB, along with Form 3CD, which is a long list of disclosures. One point students forget: you must accept the report on the income tax portal after the CA uploads it. Until you accept it, the filing is not complete.

Tax audit limit for AY 2026-27

AY 2026-27 means the financial year ended 31 March 2026.

These are the limits:

Who you are	Basic limit	Higher limit
Business	₹1 crore	₹10 crore, if the cash test below is passed
Profession (doctor, CA, lawyer, architect, engineer and others specified)	₹50 lakh	No relaxation at all

The cash test, explained simply

A business gets the ₹10 crore limit only if both of these are true for the year:

Cash received is not more than 5% of total receipts
Cash paid is not more than 5% of total payments

Both conditions must be met. Fail even one, and your limit stays at ₹1 crore.

So back to Vikas. His turnover is ₹1.4 crore, and his cash receipts and cash payments are both under 5% because customers pay by UPI and he pays suppliers by bank transfer. His limit is ₹10 crore, so no audit. Imran's turnover is lower at ₹1.1 crore, but about 30% of his sales are in cash. His limit stays ₹1 crore, which he has crossed, so his audit is compulsory.

One more thing students miss: a company crossing these limits needs a tax audit too, even though it already has a statutory audit.

If you are under presumptive taxation

Many small businesses and freelancers use the presumptive schemes, where you declare a fixed percentage of turnover as income and skip detailed books.

Section	Who it is for	Limit	Income you must declare
44AD	Small businesses	₹2 crore, or ₹3 crore if cash is within 5%	8% of turnover, or 6% on digital receipts
44ADA	Professionals	₹50 lakh, or ₹75 lakh if cash is within 5%	50% of gross receipts

If you declare at or above these percentages, no tax audit is needed. But if you declare less than the prescribed percentage and your total income crosses the basic exemption limit, a tax audit becomes compulsory. This catches a lot of freelancers who show a loss.

Tax audit due date for AY 2026-27

CBDT extended both dates this year through Circular 07/2026 dated 28 September 2026:

What	Original date	Extended date
Tax audit report	30 September 2026	21 October 2026
Income tax return for audit cases	31 October 2026	21 November 2026

Transfer pricing cases under Section 92E follow a later timeline.

Remember the order. The report is uploaded and accepted first, then the return is filed. Leaving it till the last two days is risky, because the portal slows down badly near deadlines.

Penalty for missing the tax audit

Under Section 271B, the penalty is 0.5% of turnover or gross receipts, or ₹1,50,000, whichever is lower. So the penalty tops out at ₹1.5 lakh once turnover crosses ₹3 crore.

It is not automatic. Under Section 273B, the officer can drop the penalty if you show a reasonable cause, such as serious illness of the person handling your accounts, or records seized in a raid. A simple "I forgot" will not work.

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Section 44AB or Section 63: which applies now

This confuses many people right now, because a new Income Tax Act has come in.

AY 2026-27, the year ended 31 March 2026: the old Income Tax Act, 1961 applies, under Section 44AB with Forms 3CA, 3CB and 3CD. This holds even though you file the report in late 2026.
From the next year onward: the Income Tax Act, 2025 applies, and Section 63 takes the place of Section 44AB.

The good news is that the limits themselves have not changed much. The section numbers and forms have.

FAQs

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

21 October 2026, after the CBDT extension. The return for audit cases is due by 21 November 2026.

Is tax audit applicable if my business made a loss?

Yes, if your turnover crosses the limit. A loss does not exempt you. Also, if you are under Section 44AD and declare less than 8% or 6%, an audit applies once your income crosses the basic exemption limit.

Is tax audit applicable to salaried people?

No. Section 44AB applies only to business or professional income. Salary and capital gains are outside it.

Who can conduct a tax audit?

Only a Chartered Accountant holding a Certificate of Practice. Under ICAI rules, a CA can sign a limited number of tax audits in a year, which is why firms plan the season in advance.

Is a tax audit the same as a scrutiny or notice from the department?

No, and this is a common fear. A tax audit is a routine compliance step done by your own CA. It is not an investigation by the income tax department.