Chapter XXI - Penalties
Section 439
Section 439: penalty for under-reporting and misreporting of income
Section 439 is the opening section of Chapter XXI (Penalties) of the Income-tax Act, 2025, and it is the successor to the old Act's under-reporting/misreporting penalty. It lets the Competent Authority impose a penalty - 50% of the tax payable on under-reported income in the ordinary case, and a much steeper 200% where the under-reporting amounts to misreporting - and it defines, in detail, what counts as under-reported income, how the amount of under-reported income is computed, what is excluded, and what counts as misreporting.
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This article is for general information. Refer to the Income-tax Act, 2025 as amended by the Finance Act, 2026 and the Taxation and Other Laws (Amendment) Act, 2026 for the official provisions. If you need professional advice for your situation, contact Bizeneed.
Statutory text
Bare law
(1) The Competent Authority may, during the course of any proceedings under this Act, impose penalty on any person who has under-reported his income and such penalty shall be payable in addition to tax, if any.
(2) A person shall be deemed to have under-reported his income, if— (a) the income assessed is greater than the income determined in the return processed under section 270(1)(a); (b) the income assessed is greater than the maximum amount not chargeable to tax, where no return of income has been furnished or where return has been furnished for the first time under section 280; (c) the income reassessed is greater than the income assessed or reassessed immediately before such reassessment; (d) the amount of deemed total income assessed or reassessed as per section 206(1) and (2), is greater than the deemed total income determined in the return processed under section 270(1)(a); (e) the amount of deemed total income assessed as per section 206(1) and (2), is greater than the maximum amount not chargeable to tax, where no return of income has been furnished or where return has been furnished for the first time under section 280; (f) the amount of deemed total income reassessed as per section 206(1)and (2), is greater than the deemed total income assessed or reassessed under the said sections immediately before such reassessment; (g) the income assessed or reassessed has the effect of reducing the loss or converting such loss into income.
(3) The amount of under-reported income shall be,— (a) if income has been assessed for the first time,— (i) where return has been furnished, the difference between the amount of income assessed and the amount of income determined under section 270(1)(a); (ii) where no return of income has been furnished or where return has been furnished for the first time under section 280,— (A) the amount of income assessed, in the case of a company, firm or local authority; and (B) the difference between the amount of income assessed and the maximum amount not chargeable to tax, in a case not covered in item (A); (b) in any other case, the difference between the amount of income reassessed or recomputed and the amount of income assessed, reassessed or recomputed in a preceding order.
(4) If under-reported income arises out of determination of deemed total income as per section 206(1) and (2), the amount of total under-reported income shall be determined as under— (A – B) + (C – D) where,— A = the total income assessed as per the provisions other than the provisions contained in section 206 (herein referred to as “general provisions”); B = the total income that would have been chargeable had the total income assessed as per the general provisions been reduced by the amount of under-reported income; C = the total income assessed as per section 206; D = the total income that would have been chargeable had the total income assessed as per section 206 been reduced by the amount of under-reported income.
(5)(a) If the amount of under-reported income on any issue is considered both under section 206(1) and (2) and under general provisions, such amount shall not be reduced from total income assessed while determining the amount under D referred to in sub-section (4); (b) in a case where an assessment or reassessment has the effect of reducing the loss declared in the return or converting that loss into income, the amount of under-reported income shall be the difference between the loss claimed and the income or loss, assessed or reassessed.
(6) Subject to sub-section (8), where the source of any receipt, deposit or investment in any tax year is claimed to be an amount added to income or deducted while computing loss, in the assessment of such person in any year prior to the tax year in which such receipt, deposit or investment appears (herein referred to as the preceding year) and no penalty was levied for such preceding year, then, the under-reported income shall include such amount as is sufficient to cover such receipt, deposit or investment.
(7) The amount referred to in sub-section (6) shall be deemed to be income under-reported for the preceding year in the following order:— (a) the preceding year immediately before the year in which the receipt, deposit or investment appears, being the first preceding year; and (b) where the amount added or deducted in the first preceding year is not sufficient to cover the receipt, deposit or investment, the year immediately preceding the first preceding year and so on.
(8) The under-reported income, for the purposes of this section, shall not include the following:— (a) the amount of income in respect of which the assessee offers an explanation and the Competent Authority, is satisfied that the explanation is bona fide and the assessee has disclosed all the material facts to substantiate the explanation offered; (b) the amount of under-reported income determined on the basis of an estimate, if the accounts are correct and complete to the satisfaction of the Competent Authority, but the method employed is such that the income cannot properly be deduced therefrom; (c) the amount of under-reported income determined on the basis of an estimate, if the assessee has, on his own, estimated a lower amount of addition or disallowance on the same issue, has included such amount in the computation of his income and has disclosed all the facts material to the addition or disallowance; and (d) the amount of under-reported income represented by any addition made in conformity with the arm’s length price determined by the Transfer Pricing Officer, where the assessee had maintained such information and documents as may be prescribed under section 171, declared the international transaction under Chapter X, and, disclosed all the material facts relating to the transaction.
(9) The penalty referred to in sub-section (1) shall be 50% of the tax payable on under-reported income.
(10) Irrespective of anything contained in sub-section (8) or (9), where under-reported income is in consequence of any misreporting thereof by any person, the penalty referred to in sub-section (1) shall be 200% of the tax payable on under-reported income.
(11) The cases of misreporting of income referred to in sub-section (10) shall be the following:— (a) misrepresentation or suppression of facts; (b) failure to record investments in the books of account; (c) claim of expenditure not substantiated by any evidence; (d) recording of any false entry in the books of account; (e) failure to record any receipt in books of account having a bearing on total income; (f) failure to report any international transaction or any transaction deemed to be an international transaction or any specified domestic transaction, to which the provisions of Chapter X apply; and (g) income referred to in section 195(1)(b).
(12) The tax payable in respect of the under-reported income shall be— (a) where no return of income has been furnished or where return has been furnished for the first time under section 280 and the income has been assessed for the first time, the amount of tax calculated on the under-reported income as increased by the maximum amount not chargeable to tax as if it were the total income; (b) where the total income determined under section 270(1)(a) or assessed, reassessed or recomputed in a preceding order is a loss, the amount of tax calculated on the under-reported income as if it were the total income; (c) in any other case, determined as follows— (X – Y) where,— X = the amount of tax calculated on the under-reported income as increased by the total income determined under section 270(1)(a) or total income assessed, reassessed or recomputed in a preceding order as if it were the total income; and Y = the amount of tax calculated on the total income determined under section 270(1)(a) or total income assessed, reassessed or recomputed in a preceding order.
(13) No addition or disallowance of an amount shall form the basis for imposition of penalty, if such addition or disallowance has already formed the basis for penalty in the case of the person for the same or any other tax year.
(13A) Where additional income-tax is paid in accordance with section 267(5)(ii), the income on which such additional income-tax is paid shall not form the basis of imposition of penalty under this section.
(14) The penalty referred to in sub-section (1) shall be imposed, by an order in writing by the Competent Authority.
(15) For the purposes of this section,— (a) “Competent Authority” means the Assessing Officer or the Joint Commissioner (Appeals) or the Commissioner (Appeals) or the Commissioner or the Principal Commissioner; and (b) “preceding order” means an order immediately preceding the order during the course of which the penalty under sub-section (1) has been initiated.
Introduction
Section 439 distinguishes an assessed increase or reduced loss that counts as under-reported income from the narrower cases of misreporting. The classification matters because the penalty is measured by tax on the defined under-reported amount, with a higher rate for misreporting.
Key takeaways
Two penalty bases
The section distinguishes under-reported income from misreporting and sets different penalty measures.
Defined computation
The amount of under-reported income and tax payable on it are determined through the subsections rather than by a flat percentage of gross receipts.
Exclusions and safeguards
The section excludes specified amounts and prevents the same addition or disallowance from forming a repeated penalty basis.
The basic power to penalise
Sub-section (1): the Competent Authority may, during any proceeding under the Act, impose a penalty on a person who has under-reported income, and this penalty is in addition to any tax payable.
When income is deemed under-reported
Sub-section (2) deems a person to have under-reported income in any of the following situations:
- The income assessed is greater than the income determined in the return processed under section 270(1)(a)
- The income assessed is greater than the maximum amount not chargeable to tax, where no return was furnished, or a return was furnished for the first time only under section 280
- The income reassessed is greater than the income assessed or reassessed immediately before the reassessment
- The deemed total income assessed or reassessed under section 206(1) and (2) is greater than the deemed total income determined in the return processed under section 270(1)(a)
- The deemed total income assessed under section 206(1) and (2) is greater than the maximum amount not chargeable to tax, where no return was furnished or a return was furnished for the first time under section 280
- The deemed total income reassessed under section 206(1) and (2) is greater than the deemed total income assessed or reassessed immediately before the reassessment
- The income assessed or reassessed has the effect of reducing a declared loss or converting that loss into income
How the amount of under-reported income is computed
Sub-section (3): where income is assessed for the first time, the under-reported amount is (i) the difference between the income assessed and the income determined under section 270(1)(a), where a return was furnished; or (ii) where no return was furnished, or a return was furnished for the first time only under section 280 - the entire income assessed (for a company, firm or local authority), or the difference between the income assessed and the maximum amount not chargeable to tax (for anyone else). In any other case, it is the difference between the income reassessed/recomputed and the income assessed/reassessed/recomputed in the preceding order.
Sub-sections (4) and (5) give a formula for cases where the under-reported income arises out of deemed total income determined under section 206(1) and (2), and clarify that the same amount is not double-counted between the general provisions and section 206, and that where an order reduces a declared loss or converts it into income, the under-reported income is the difference between the loss claimed and the income or loss finally assessed or reassessed.
Sub-sections (6) and (7): where the source of a receipt, deposit or investment in a tax year is claimed to be an amount added to income (or deducted while computing loss) in an earlier year's assessment for which no penalty was levied, that earlier amount is treated as under-reported income of the earlier year(s), attributed first to the year immediately preceding the year the receipt/deposit/investment appears, and then to progressively earlier years if the first year's addition isn't enough to cover it.
What is excluded from under-reported income
Subsection (8) excludes the listed amounts from under-reported income, subject to the overriding misreporting rule in subsection (10). It is important to identify whether the authority alleges a specific subsection (11) misreporting category before relying on these exclusions.
- Income for which the assessee offers a bona fide explanation that the Competent Authority is satisfied with, and for which all material facts were disclosed
- Income determined on an estimate basis, where the accounts are correct and complete to the Competent Authority's satisfaction but the method of accounting used makes correct income deduction difficult
- Income determined on an estimate basis, where the assessee has already estimated a lower addition/disallowance on the same issue, included it in the computed income, and disclosed all material facts
- Income represented by an addition made in conformity with the arm's length price determined by the Transfer Pricing Officer, where the assessee maintained the prescribed section 171 information/documents, declared the international transaction under Chapter X, and disclosed all material facts
The penalty rates: 50% and 200%
| Situation | Penalty (sub-section) |
|---|---|
| Ordinary under-reporting of income | 50% of the tax payable on the under-reported income - sub-section (9) |
| Under-reporting that amounts to misreporting | 200% of the tax payable on the under-reported income - sub-section (10) |
What counts as misreporting
Sub-section (11) lists the cases of misreporting of income that trigger the steeper 200% penalty:
- Misrepresentation or suppression of facts
- Failure to record investments in the books of account
- Claim of expenditure not substantiated by any evidence
- Recording of any false entry in the books of account
- Failure to record any receipt in the books of account having a bearing on total income
- Failure to report any international transaction, deemed international transaction, or specified domestic transaction to which Chapter X applies
- Income referred to in section 195(1)(b)
How the tax payable on under-reported income is worked out
Sub-section (12) sets out how to compute the tax payable on under-reported income for penalty purposes: (a) where no return was furnished (or a return was furnished for the first time under section 280) and income is assessed for the first time, tax is calculated on the under-reported income increased by the maximum amount not chargeable to tax, as if that total were the total income; (b) where the earlier determined/assessed total income was a loss, tax is calculated on the under-reported income as if it were the total income; (c) in any other case, it is the difference between (X) tax on the under-reported income added to the earlier determined/assessed total income, and (Y) tax on the earlier determined/assessed total income alone.
No double penalty; other procedural points
Sub-section (13): an addition or disallowance cannot form the basis of a penalty if it has already been the basis of a penalty on the same person for the same or any other tax year.
Sub-section (13A): where additional income-tax is paid under section 267(5)(ii), the income on which that additional tax is paid does not form the basis for a penalty under this section.
Sub-section (14): the penalty is imposed by an order in writing of the Competent Authority.
Sub-section (15) defines "Competent Authority" as the Assessing Officer, Joint Commissioner (Appeals), Commissioner (Appeals), Commissioner or Principal Commissioner, and "preceding order" as the order immediately preceding the one during which the section 439 penalty proceedings were initiated.
Step-by-step flow for applying Section 439
- 1
Is income assessed or reassessed higher than the returned, processed or earlier assessed income (or a loss reduced)?
- No: No under-reporting under Section 439(2).
- Yes: Go to the next step.
- 2
Compute the amount of under-reported income
Use the rules in Sections 439(3) to (7), including the special formula where deemed total income under Section 206 is involved.
- 3
Does an exclusion in Section 439(8) apply?
For example, an explanation found bona fide with all material facts disclosed, or estimates where accounts are correct and complete.
- Yes: That amount is excluded.
- No: Go to the next step.
- 4
Is it misreporting (such as suppressed facts, false entries or unrecorded receipts as defined in the section)?
- Yes: Penalty at 200% of the tax payable on the misreported income.
- No: Penalty at 50% of the tax payable on the under-reported income.
Practical checklist
Do
- Compare the returned, earlier assessed and current assessed figures under the applicable sub-section (2) and (3) route before estimating under-reported income.
- Check each claimed exclusion in sub-section (8) against the supporting explanation, complete factual disclosure and records.
- If the notice alleges misreporting, identify the exact sub-section (11) category and the evidence for it before applying the 200% rate.
- Check whether the same addition already supported a penalty or additional income-tax under the safeguards in sub-sections (13) and (13A).
Avoid
- Do not calculate the penalty as a flat percentage of turnover or of every assessment addition; first determine the statutory tax on under-reported income.
- Do not treat every disagreement or estimate as misreporting without matching a listed sub-section (11) ground.
Illustrative example
Worked example: an addition with a bona fide explanation
Hypothetical facts (illustration only, not a real taxpayer): A firm's return is processed at ₹40 lakh. On assessment, the AO adds ₹5 lakh for an expense claimed in the wrong year. The firm had disclosed all the facts in its return and gives a bona fide explanation.
Under-reporting
Assessed income (₹45 lakh) exceeds the income determined on processing (₹40 lakh), so Section 439(2)(a) is triggered.
Amount
Under Section 439(3)(a)(i), under-reported income is the ₹5 lakh difference.
Exclusion
If the Competent Authority is satisfied that the explanation is bona fide and all material facts were disclosed, Section 439(8)(a) excludes the ₹5 lakh.
Outcome
- If the exclusion is accepted, no penalty under Section 439 for this addition.
- Without the exclusion, penalty would be 50% of the tax on ₹5 lakh, or 200% if the facts amounted to misreporting.
Glossary
- Under-reported income
- The amount determined under section 439 by comparing the applicable return, assessment, reassessment or loss figures, subject to stated exclusions.
- Misreporting
- The listed conduct in section 439(11), including specified false entries, fact suppression and unsubstantiated expenditure claims.
Frequently asked questions
What is the penalty for simply under-reporting income under Section 439?
50% of the tax payable on the under-reported income, under section 439(9).
When does the penalty jump to 200%?
Where the under-reported income arises from misreporting - for example misrepresentation of facts, false entries in the books, unsubstantiated expenditure claims, or failure to report an international transaction - section 439(10) sets the penalty at 200% of the tax payable on the under-reported income.
Can I avoid the penalty by giving an explanation for the difference in income?
Subsection (8)(a) excludes an amount where the explanation is bona fide, the Competent Authority is satisfied and all material facts are disclosed to substantiate it. However, subsection (10) operates notwithstanding subsection (8) where under-reporting results from misreporting. A general explanation does not automatically displace that rule.
Can I be penalised twice for the same addition to income?
No - section 439(13) bars using the same addition or disallowance as the basis for a penalty more than once, whether in the same tax year or a different one.
Need help applying this provision to your situation?
Get help responding to an under-reporting or misreporting penalty noticeLast updated 10 October 2026