Introduction
Assessment under Section 147 of the Income-tax Act, 1961 deals with cases where
income chargeable to tax has escaped assessment for a particular assessment
year. The provision empowers the Assessing Officer (AO), subject to the
statutory conditions and procedural safeguards, to assess or reassess such
income or recompute the loss, depreciation, allowance or deduction for the
relevant assessment year.
However, the law relating to reassessment has undergone substantial changes. In
particular, the Finance (No. 2) Act, 2024, effective from 1 September 2024,
substantially modified the time limits and procedure for reopening assessments.
Further, the Income-tax Act, 2025 came into force from 1 April 2026, but the
Income-tax Department has clarified that reassessment proceedings relating to
tax years beginning before 1 April 2026 continue to be governed by the
Income-tax Act, 1961 under the transition provisions.
Accordingly, for earlier assessment years, Sections 147, 148, 148A, 149, 151 and 153 of the Income-tax Act, 1961 remain particularly important.
Section 147 provides that where any income chargeable to tax has escaped
assessment for any assessment year, the Assessing Officer may, subject to
Sections 148 to 153, assess or reassess such income or recompute the loss,
depreciation allowance or other allowance or deduction for that assessment year.
Thus, Section 147 is commonly described as the provision relating to income
escaping assessment or reassessment.
The object of reassessment is to bring into the tax net income which, for
whatever legally relevant reason, was not properly subjected to tax in the
original proceedings.
Important distinction
A proceeding under Section 147 is not merely a continuation of the original
assessment. It is a statutory reassessment proceeding which can be initiated
only in accordance with the conditions and procedural requirements prescribed by
the Act.
The present law also differs substantially from the older reassessment regime.
Therefore, explanations based on the former expression "reason to believe", the
old four-year/six-year/sixteen-year framework, or the pre-2024 provisions should
not be mechanically applied to notices governed by the amended law.
Income is regarded as having escaped assessment where taxable income has not
been properly brought to tax in accordance with law.
Examples may include situations where:
taxable income was not disclosed;
a return was not furnished where one was required;
income was understated;
an excessive loss or deduction was claimed;
an incorrect allowance or relief resulted in under-assessment;
information subsequently available to the Assessing Officer indicates escapement
of taxable income; or
other information or material satisfying the statutory requirements indicates
that income chargeable to tax has escaped assessment.
The precise statutory conditions depend upon the assessment year and the version
of Section 147/149 applicable to the proceedings.
Is every mistake in the original assessment sufficient for reopening?
No.
Reassessment proceedings are governed by statutory conditions. The Assessing
Officer must have information/material satisfying the requirements of the
applicable provisions, and the procedure prescribed under Section 148A, where
applicable, must be followed.
Moreover, the Supreme Court and various High Courts have repeatedly emphasised
that reassessment powers cannot be exercised merely as a means of making a
fishing or roving inquiry or for reviewing an assessment without statutory
jurisdiction.
Therefore, when a taxpayer receives a notice under Section 148, it is important
to examine not merely the alleged escaped income but also:
1. the assessment year involved;
2. the date of the notice;
3. the date and manner of service;
4. the information suggesting escapement;
5. compliance with Section 148A;
6. limitation under Section 149;
7. approval under Section 151;
8. whether the alleged income falls within the statutory scope of reassessment;
and
9. whether the proceedings are barred by any applicable legal principle.
Procedure for Reassessment under Sections 147, 148 and 148A
The current procedure is broadly as follows.
Step 1 - Information suggesting escapement of income
Where the Assessing Officer has information which suggests that income
chargeable to tax has escaped assessment, the statutory reassessment process may
be initiated.
Section 148A generally requires the Assessing Officer, before issuing a notice
under Section 148, to provide the assessee an opportunity of being heard.
The notice under Section 148A(1) must be accompanied by the information
suggesting that income chargeable to tax has escaped assessment.
Step 2 - Reply to notice under Section 148A
The taxpayer should carefully examine the information supplied with the notice
and submit a reasoned response.
The reply should ordinarily address:
whether there was any escapement of income;
the factual basis of the allegation;
documents supporting the taxpayer's position;
whether the alleged income was already disclosed;
whether tax was already paid;
whether the issue was examined in the original assessment;
limitation under Section 149;
jurisdictional defects;
applicability of any exclusion or exception; and
any other legal objection relevant to the reopening.
A taxpayer should not treat the Section 148A notice as a mere formality. A
detailed response at this stage can be important because the Assessing Officer
is required to consider the taxpayer's reply before deciding whether the case is
fit for issuance of a notice under Section 148.
Step 3 - Order under Section 148A(3)
After considering the material on record and the taxpayer's response, the
Assessing Officer passes an order determining whether it is a fit case for
issuance of notice under Section 148.
The order requires prior approval of the specified authority.
There is an important exception: Section 148A does not apply in the cases
covered by the statutory exception relating to information received under a
scheme notified under Section 135A.
Step 4 - Notice under Section 148
If the case is considered fit for reassessment, the Assessing Officer issues a
notice under Section 148.
Under the amended Section 148, the notice requires the assessee to furnish a
return of income for the relevant assessment year. The return is to be furnished
within the period specified in the notice, subject to the statutory maximum.
The current provision states that the period specified in the notice cannot
exceed three months from the end of the month in which the notice is issued.
Further, pursuant to the Finance Act, 2026, the period specified in a Section
148 notice cannot be less than 30 days from the date of the notice. This
amendment has retrospective effect from 30 March 2026.
How to Prepare and File Return under Section 148?
A return filed pursuant to a notice under Section 148 is not simply an optional
revised return. It is a return furnished in response to a statutory reassessment
notice.
Section 148 specifically requires the assessee to furnish the return in the
prescribed form and verified in the prescribed manner. The provisions of the
Income-tax Act apply, so far as may be, as if the return were a return required
to be furnished under Section 139.
Practical steps for filing the Section 148 return
1. Verify the assessment year
First verify the assessment year mentioned in the notice.
A wrong assessment year can materially affect:
the applicable law;
limitation;
the prescribed ITR form;
tax computation; and
validity of the reassessment proceedings.
2. Examine the Section 148 notice
Check:
notice number;
date of issue;
date of service;
assessment year;
DIN;
issuing authority;
information forming the basis of reopening;
Section 148A order, where applicable; and
time allowed for filing the return.
3. Reconstruct the income for the relevant year
The taxpayer should prepare the return on the basis of the actual income,
deductions, exemptions, losses and other relevant particulars for the relevant
assessment year.
Where necessary, the taxpayer should reconcile:
bank accounts;
books of account;
TDS/TCS records;
Form 26AS/AIS;
capital gains;
business income;
property transactions;
investments;
foreign assets/income;
deductions claimed; and
taxes already paid.
4. Claim legitimate deductions and losses
The fact that the return is being filed pursuant to Section 148 does not mean
that the taxpayer must surrender legitimate deductions or allowances.
All legally permissible claims should be properly examined and supported by
appropriate documents.
5. Pay applicable tax and interest
Where additional tax is payable, the taxpayer should compute the applicable tax,
interest and other statutory liabilities and make payment as required.
6. File the return electronically
The return should be furnished through the prescribed income-tax filing
mechanism using the applicable ITR form and the relevant Section 148 notice
details.
7. Preserve acknowledgement and documents
The taxpayer should preserve:
copy of Section 148 notice;
Section 148A notice and order, where applicable;
acknowledgement of the return;
computation of income;
tax payment challans;
supporting documents;
submissions made to the Assessing Officer; and
subsequent notices and replies.
After the return is filed, the Assessing Officer may proceed with reassessment
under Section 147.
The AO may examine the issues relating to the alleged escaped income and other
income chargeable to tax which comes to notice during the reassessment
proceedings, subject to the statutory framework.
Section 147 expressly permits assessment or reassessment of escaped income and
also provides for recomputation of loss, depreciation, allowance or deduction
where applicable.
The reassessment may therefore result in:
no additional tax;
acceptance of the returned income;
enhancement of taxable income;
disallowance of deductions;
recomputation of losses; or
creation of additional tax demand.
This is one of the most important changes in the reassessment law.
The old law should not be confused with the present Section 149.
Under the law applicable after the Finance (No. 2) Act, 2024, Section 149
provides substantially different limitation periods.
Present limitation under Section 149
Under Section 149(1), a notice under Section 148 generally cannot be issued
after three years and three months from the end of the relevant assessment year,
unless the case falls within the extended period under clause (b).
Where three years and three months have elapsed but not more than five years and
three months have elapsed from the end of the relevant assessment year, a notice
can be issued only where the statutory condition is satisfied-namely, that the
Assessing Officer possesses books of account or other documents or evidence
relating to an asset, expenditure, transaction or entries which show that income
chargeable to tax escaping assessment amounts to or is likely to amount to ₹50 lakh or more.
Therefore, the earlier four-year/six-year rule is no longer the general rule for
notices governed by the amended Section 149.
The old provision permitted reopening generally within four years, extending to
six years where escaped income was ₹1 lakh or more, and up to sixteen
years in specified cases involving assets outside India.
Those figures should not be used for reassessment notices governed by the
amended provisions effective from 1 September 2024.
Is There a 16-Year Limitation for Foreign Assets?
The earlier Section 149 contained a special 16-year period for income
relating to assets, including financial interests in entities, located outside
India.
The post-1 September 2024 reassessment regime has substantially changed the
limitation structure. The principal extended period under the amended Section
149 is now linked to the three years and three months / five years and three
months framework and the ₹50 lakh statutory threshold.
Accordingly, the applicability of the old 16-year rule must be examined with
reference to the date of initiation, transitional provisions and the assessment
year concerned, rather than being stated as a universally applicable current
rule.
Section 153 governs the time limit for completion of reassessment.
For reassessment under Section 147, an order cannot ordinarily be made after the
expiry of twelve months from the end of the financial year in which the notice
under Section 148 was served. Section 153 technically states nine months, but
its proviso makes the period twelve months where the notice under Section 148 is
served on or after 1 April 2019.
Example
Suppose a Section 148 notice is served on 15 September 2026.
The financial year in which the notice is served ends on 31 March 2027.
Ordinarily, the reassessment order under Section 147 would have to be completed
within 12 months from the end of that financial year, i.e. by 31 March 2028,
subject to statutory exclusions, extensions and special provisions that may
apply to the particular case.
Therefore, the statement that reassessment under Section 147 must always be
completed "within one year from the end of the financial year in which notice
under Section 148 is served" should be updated. For notices governed by the
current Section 153 framework, the effective period is generally 12 months, not
one year as an older formulation might suggest.
A major development from 1 April 2026 is the coming into force of the Income-tax
Act, 2025.
However, this does not mean that Sections 147 and 148 of the 1961 Act suddenly
cease to be relevant for all pending or earlier-year reassessment proceedings.
The Income Tax Department has clarified that the new reassessment provisions
under the Income-tax Act, 2025 apply to Tax Year 2026-27 and subsequent tax
years, while tax years beginning before 1 April 2026 continue to be governed by
the old Act.
The Department has further clarified that reassessment proceedings already
initiated under Sections 147/148 of the Income-tax Act, 1961 and pending on 1
April 2026 continue under the old Act by virtue of the savings/transition
provisions.
This transitional issue is extremely important while dealing with notices issued
during or after 2026.
Approval under Section 151
Section 151 specifies the authority competent to approve proceedings under
Sections 148 and 148A.
Following the Finance (No. 2) Act, 2024, the specified authority under Section
151 is the Additional Commissioner, Additional Director, Joint Commissioner or
Joint Director, as the case may be.
Therefore, while examining the validity of a reassessment proceeding, the
taxpayer should also verify whether the statutory approval has been obtained
from the competent specified authority.
Important Points to Check on Receiving a Section 148 Notice
A taxpayer receiving a notice under Section 148 should not immediately accept
the alleged escaped income.
The following questions should be examined:
1. Which assessment year is involved?
2. Which version of the Income-tax Act applies?
3. When was the notice issued and served?
4. Was Section 148A applicable?
5. Was a Section 148A show-cause notice issued?
6. Was adequate opportunity of hearing provided?
7. Was the information suggesting escapement supplied?
8. Was a proper order passed under Section 148A(3)?
9. Was the statutory approval obtained under Section 151?
10. Is the notice within the limitation prescribed by Section 149?
11. Does the alleged escaped income satisfy the statutory threshold for the
extended period?
12. Was the income already disclosed in the original return or assessment?
13. Was the issue already examined in the original assessment?
14. Is the reopening based merely on a change of opinion where the law does not
permit such reopening?
15. Does the alleged escaped income actually exist?
16. Are the computation and tax consequences correct?
17. Has the return under Section 148 been filed within the time allowed?
18. Are there any jurisdictional or procedural defects in the reassessment
proceedings?
Old Law vs Present Law - Important Changes
| Particular | Earlier position | Present position under amended 1961 Act |
| Basic provision | Section 147 | Section 147 |
| Notice | Section 148 | Section 148 |
| Pre-notice procedure | Earlier framework differed | Section 148A generally provides opportunity before Section 148 |
| Ordinary limitation | Generally 4 years under old Section 149 | 3 years and 3 months |
| Extended limitation | Up to 6 years in specified cases | Up to 5 years and 3 months in specified cases |
| Monetary threshold | ₹1 lakh under old extended period | ₹50 lakh under present extended period |
| Foreign asset special period | Up to 16 years under old law | Present limitation must be examined under amended Section 149 and transitional provisions |
| Return pursuant to notice | Section 148 | Section 148; generally up to 3 months from end of month of notice |
| Minimum time for return | Not in current form | At least 30 days from notice under 2026 amendment |
| Completion of reassessment | 12 months for post-1 April 2019 notices | Generally 12 months under Section 153, subject to statutory exclusions/extensions |
The old limitation provisions should therefore be used only for cases to
which the old law actually applies.
Conclusion
Assessment under Section 147 of the Income-tax Act, 1961 is a reassessment
mechanism for bringing income that has escaped assessment to tax. However, the
Assessing Officer cannot simply reopen an assessment without following the
statutory procedure.
For proceedings governed by the post-2024 provisions, particular importance
should be given to Sections 147, 148, 148A, 149, 151 and 153.
The most important practical points are:
Section 147 provides the substantive power to assess or reassess escaped income.
Section 148 provides for the notice requiring the taxpayer to furnish a return.
Section 148A generally provides a pre-notice opportunity of hearing.
Section 149 prescribes the limitation for issuing the notice.
The amended Section 149 substantially changed the earlier
four-year/six-year/sixteen-year framework.
The extended reassessment period is linked to the statutory ₹50 lakh threshold
and specified information/documents.
A Section 148 return should be prepared carefully and filed within the period
specified in the notice.
Under the 2026 amendment, the period specified in a
Section 148 notice cannot ordinarily be less than 30 days from the date of
notice.
Section 153 generally allows 12 months from the end of the financial year in
which the Section 148 notice was served for completion of reassessment, subject
to statutory exclusions and extensions.
Since the Income-tax Act, 2025 came into force on 1 April 2026, it is essential
to determine whether the particular matter falls under the old Act or the new
Act. Earlier tax years and pending proceedings can continue under the Income-tax
Act, 1961 because of the transition and savings provisions.
Therefore, a Section 148 notice should always be examined from both
perspectives-whether income has actually escaped assessment and whether the
Assessing Officer has complied with every statutory requirement for assuming
reassessment jurisdiction.
This article is intended for general legal and tax information. The validity of
a particular reassessment notice depends on the assessment year, date of
initiation, applicable transitional provisions, facts of the case and the
documents/information relied upon by the Assessing Officer.
Reference
[1]: https://incometaxindia.gov.in/documents/income-tax-act-1961-amended-by-finance-no.-2-act-2024.pdf
[2]: https://www.incometaxindia.gov.in/hi/w/section-147-63
[3]: https://www.incometaxindia.gov.in/w/section-148a-4
[4]: https://www.incometaxindia.gov.in/w/section-148-63
[5]: https://www.incometaxindia.gov.in/w/section-10-243
[6]: https://wmstatic-prd.incometaxindia.gov.in/web/guest/w/section-149-63
[7]: https://www.incometaxindia.gov.in/w/section-149-56
[8]: https://www.incometaxindia.gov.in/hi/w/section-153-63
[9]: https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/reassessment%20proceedings-faq?mobile-app=1
[10]: https://www.incometaxindia.gov.in/hi/w/section-151-63