Section 129 of the Income-tax Act, 1961: Change of Incumbent of an Office
When an Assessing Officer or another income-tax authority is replaced during a proceeding, the successor can ordinarily continue the case from the stage already reached. However, the taxpayer has a statutory right to request reopening of earlier proceedings or a rehearing before an assessment order is passed.
What is Section 129 of the Income-tax Act, 1961?
Section 129 - Change of incumbent of an office addresses the situation where an income-tax authority stops exercising jurisdiction over a proceeding and is succeeded by another authority who lawfully has and exercises that jurisdiction.
Its principal rule permits the successor authority to continue the proceeding from the stage at which the predecessor left it. A change of officer, by itself, does not require all earlier steps, notices or evidence to be repeated.
The proviso gives the concerned assessee the right to demand, before the proceeding is continued, that the earlier proceeding or a part of it be reopened, or that the assessee be reheard before an assessment order is passed.
Important definitions
- Incumbent: the person currently holding a particular office; a change of incumbent means a different officer takes charge.
- Predecessor: the income-tax authority that previously exercised jurisdiction in the matter.
- Successor: the income-tax authority that lawfully assumes and exercises jurisdiction after the predecessor.
- Assessee: a person liable to pay tax or another sum under the Act, or otherwise covered by the statutory definition, including a person against whom proceedings are taken.
- Proceeding: a statutory process, such as assessment or reassessment, conducted by an income-tax authority.
Taxpayer's right to rehearing or reopening
The statutory proviso is a safeguard against a taxpayer being prejudiced merely because the official handling a proceeding changes. The assessee may demand:
- Reopening of previous proceedings: the earlier proceeding, or a relevant part of it, may be reopened before the successor continues it.
- Rehearing before assessment: the assessee may seek to be heard again before an adverse assessment order is passed.
The right should be invoked clearly and promptly, preferably in writing, identifying the pending proceeding, the change in officer and the part of the case for which a fresh opportunity is sought. Section 129 does not automatically invalidate earlier proceedings or provide an unconditional right to restart the entire assessment.
How a change of Assessing Officer works
| Stage | Legal effect |
|---|---|
| Officer ceases to exercise jurisdiction | The earlier authority stops handling the matter, for example because of a transfer or reassignment. |
| Successor assumes lawful jurisdiction | The new authority can ordinarily proceed from the existing stage. |
| Assessee requests rehearing or reopening | The statutory safeguard under Section 129 must be considered before proceeding as applicable. |
| Assessment or other proceeding continues | Existing procedural steps need not be repeated solely because of the officer's replacement. |
Illustration
An Assessing Officer issues a notice, receives documents and conducts a hearing. Before the assessment is completed, another officer lawfully takes over. The successor may ordinarily continue from the same stage. If the taxpayer demands a rehearing before the assessment order, that demand engages the safeguard provided in Section 129.
Change of officer versus transfer of a case
Section 127 deals with the power and procedure to transfer cases between Assessing Officers. Section 129 addresses continuity of a proceeding after a lawful change of incumbent. The two provisions can operate together, but they answer different legal questions. Jurisdiction is also governed by Section 120 and Section 124.
Corresponding Section 244 of the Income-tax Act, 2025
The Income-tax Act, 2025, effective from 1 April 2026, carries forward the same basic principle in Section 244 - Change of incumbent of an office.
- Section 244(1): permits the successor income-tax authority to continue a proceeding from the stage at which the predecessor left it, provided the successor has and exercises jurisdiction.
- Section 244(2): permits the assessee, before continuation, to demand reopening of the earlier proceeding or a part of it, or a rehearing before an assessment order is passed.
The 2025 provision sets out the continuity rule and the assessee's safeguard in two separate subsections. For matters involving older tax years, the applicable law and savings provisions must be checked rather than assuming every pending matter automatically shifts to the 2025 Act.
Section 245 of the 2025 Act also concerns faceless jurisdiction, including schemes dealing with changes of incumbency under Section 244. Its operation depends on the relevant notified scheme and applicable provisions.
Frequently asked questions
Does an assessment become invalid when the Assessing Officer changes?
No. A change of officer alone does not invalidate a proceeding. Section 129 allows lawful continuation from the stage already reached, subject to the taxpayer's statutory safeguards.
Can the new Assessing Officer use evidence collected by the previous officer?
Generally, yes. The successor may continue the proceeding on the existing record, but the assessee may exercise the right to request reopening of earlier proceedings or a rehearing where the provision applies.
Is the right to a rehearing automatic?
The provision gives the assessee a right to demand a rehearing or reopening. A taxpayer should make that request expressly and in time, rather than assume the successor will repeat earlier hearings without being asked.
What is the corresponding provision under the Income-tax Act, 2025?
Section 244 is the corresponding provision, with subsection (1) dealing with continuation and subsection (2) dealing with the assessee's right to reopening or rehearing.
Official legal references
- Income Tax Department - official portal (legislation, notifications and departmental guidance).
- Income-tax Act, 2025 as amended by Finance Act, 2026 - see Section 244 and related Section 245.
- Income-tax Act, 2025 - official statutory PDF.
- Income Tax Department section correspondence navigator - Section 129 (1961) to Section 244 (2025).
Updated 26 October 2026. This is a general legal explanation. The relevant statutory text, notifications and procedural facts should be checked for a particular proceeding.