Tax audit thresholds explained: Section 44AB, the 5% cash test, and when 44AD makes more sense

Section 44AB of the Income-tax Act, 1961 mandates that certain assessees get their accounts audited by a Chartered Accountant before filing their return. The audit report is filed in Form 3CA / 3CB and 3CD on the e-filing portal. The framework is well-established, but the threshold tests get re-cut every few years and the interaction with presumptive taxation is the part most often misread. Here is the working framework.

The headline rule for business taxpayers

A person carrying on business is required to get their accounts audited if total sales / turnover / gross receipts in business exceed Rs 1 crore in any previous year. This is the baseline of Section 44AB(a). For purely cash-economy businesses, this is the operative threshold.

The 5% cash test — lifting the threshold to Rs 10 crore

The Finance Act 2020 introduced the exception that has reshaped tax-audit applicability for most digital-first businesses. Under the proviso to Section 44AB(a), the threshold is increased to Rs 10 crore if:

• The aggregate of all amounts received in cash during the year does not exceed 5% of total receipts, AND
• The aggregate of all amounts paid in cash during the year does not exceed 5% of total payments.

Both tests must be satisfied. A business with 4% cash receipts and 7% cash payments fails the test and is back at the Rs 1 crore threshold. A business with 4% cash receipts and 4% cash payments passes — and gets the Rs 10 crore band.

For this purpose, “cash” means actual currency. Bank transfers, NEFT, IMPS, UPI, RTGS, card swipes, cheques and demand drafts are all non-cash. The clarification matters because in practice few digitally-mature SMEs cross the 5% cash threshold — meaning the Rs 10 crore band is the operative threshold for most modern businesses, not Rs 1 crore.

Professionals — Section 44AB(b)

A person carrying on a profession is required to get accounts audited if gross receipts in profession exceed Rs 50 lakh in any previous year. This applies to specified professions under Section 44AA(1) — legal, medical, engineering, architectural, accountancy, technical consultancy, interior decoration, and others notified.

The Finance Act 2023 inserted a parallel proviso for professionals: where cash receipts do not exceed 5% of total receipts, the threshold is lifted to Rs 75 lakh. The same 5% test, applied only to receipts (there is no equivalent payments test for professionals).

The presumptive interaction — Section 44AD and 44ADA

Sections 44AD and 44ADA offer a presumptive taxation route. The idea: declare 8% (or 6% for digital receipts) of turnover under 44AD, or 50% of gross receipts under 44ADA, as your taxable business / professional income. No books to maintain, no audit required — provided turnover stays within the cap.

The caps:

• Section 44AD (eligible business): turnover up to Rs 2 crore — raised to Rs 3 crore by the Finance Act 2023 where cash receipts don’t exceed 5% of total receipts
• Section 44ADA (specified professions): gross receipts up to Rs 50 lakh — raised to Rs 75 lakh by the Finance Act 2023 where cash receipts don’t exceed 5%

The presumptive scheme is optional. If the taxpayer declares income at or above the presumptive rate, no tax audit. If the taxpayer declares income lower than the presumptive rate and the actual income exceeds the basic exemption limit, Section 44AB(e) kicks in and a tax audit becomes mandatory.

The five-year lock-in

Section 44AD has a five-year lock: once you opt out of the presumptive scheme, you cannot opt back in for five assessment years. The intent is to prevent year-by-year cherry-picking between presumptive (when income is low) and regular (when income is high). The lock applies to 44AD; 44ADA does not have an equivalent five-year lock under the current framework.

When 44AD makes more sense than tax audit

For many small businesses, 44AD is the cheaper, simpler choice. A trader with Rs 1.5 crore turnover and Rs 18 lakh of actual profit:

• Tax audit route: maintain full books, get audited, pay tax on Rs 18 lakh.
• 44AD route: declare 8% of Rs 1.5 crore = Rs 12 lakh; no books, no audit, pay tax on Rs 12 lakh.

In this case, 44AD saves both tax (lower declared income) and compliance cost (no audit fee, lighter book-keeping). The trade-off: the trader loses the ability to claim deductions / depreciation that exceeded the presumptive rate, and the five-year lock prevents flipping back.

The pattern flips for high-margin businesses. A consultant with Rs 40 lakh gross receipts and only Rs 8 lakh of profit:

• 44ADA route: declare 50% of Rs 40 lakh = Rs 20 lakh.
• Regular books route: declare actual Rs 8 lakh after deductible expenses.

Here the regular route saves tax materially, even after the cost of maintaining books and (if income exceeds the basic exemption limit while declaring lower than presumptive) a tax audit under 44AB(e).

Other Section 44AB triggers

Beyond turnover, three other clauses trigger tax audit:

• 44AB(c): a person whose income is taxable under Section 44AE (transport business), 44BB (oil exploration), 44BBB (turnkey power projects) but claims profits lower than the presumptive rate.
• 44AB(d): a person eligible for 44ADA but declaring income lower than 50%, with total income above the basic exemption.
• 44AB(e): a person who opted out of 44AD within the five-year window and has total income above the basic exemption.

The penalty for not getting audited

Section 271B levies a penalty equal to 0.5% of turnover or Rs 1,50,000, whichever is lower, for failure to get accounts audited when required. The penalty is leviable by the Assessing Officer — not automatic — and the taxpayer can show “reasonable cause” under Section 273B to avoid it. In practice, the AO is willing to accept genuine inadvertent error in the first instance but rarely in subsequent years.

The due date

Tax audit report under 44AB must be filed by 30 September of the assessment year — one month before the ITR due date of 31 October for audit cases. Missing the audit report due date but filing the ITR before 31 October keeps the audit penalty exposure live; missing both attracts the audit penalty plus the Section 234A interest on late filing.

The decision flow we use

1. Compute turnover / gross receipts for the year.
2. Determine the cash receipts and cash payments ratio. If both are below 5%, use the higher (Rs 10 crore / Rs 75 lakh) threshold.
3. If turnover is below the presumptive cap (44AD: Rs 2 / 3 crore; 44ADA: Rs 50 / 75 lakh), evaluate whether presumptive is cheaper than regular.
4. If presumptive is chosen, model the five-year lock impact for businesses.
5. If presumptive is not chosen and turnover is above the 44AB threshold, plan the tax audit schedule with the September 30 due date as the anchor.

Sources

• Income-tax Act 1961 — Section 44AB (audit of accounts)
• Income-tax Act 1961 — Section 44AD / 44ADA (presumptive taxation)
• Income-tax Act 1961 — Section 271B (penalty for failure to get accounts audited)
• Income-tax e-filing portal — Form 3CA / 3CB / 3CD