Income‑tax Act, 2025, What Indian Companies Must Do Now: Compliance, Disputes & Litigation Risk

The Income‑tax Act 2025 India impact is already being felt across boardrooms, tax departments and legal teams: the new statute replaced the six‑decade‑old Income‑tax Act, 1961 on 1 April 2026, accompanied by the freshly notified Income‑tax Rules, 2026 and a suite of amendments introduced through Finance Bill 2026. For CFOs, tax heads and in‑house counsel, the transition creates an immediate compliance burden, new section numbering, revised return forms, restructured TDS codes, layered on top of a far more consequential litigation risk: thousands of pending assessments, appeals and reassessment proceedings must now be mapped from the old law to the new.

This guide sets out exactly what Indian companies and multinational enterprises (MNEs) operating in India should do in the next 30, 90 and 180 days to stay compliant and minimise dispute exposure under the 2026 changes.

Your 30 / 90 / 180‑Day Action Checklist

• Within 30 days. Audit every open TDS demand and notice for code mismatches against the Income‑tax Rules, 2026. Confirm that payroll and accounts‑payable systems have been updated with revised TDS section references. Identify any notices issued under the old Act that remain unanswered.
• Within 90 days. Map every pending assessment, appeal and stay application from the corresponding 1961 Act provision to its 2025 Act equivalent using the CBDT’s official transition FAQs. Brief external counsel on any matter where the transitional mapping is ambiguous.
• Within 180 days. Complete updated transfer pricing master files and local files referencing the renumbered documentation provisions. Prepare a litigation triage register that scores each open dispute by materiality, forum and transitional risk. Review Advance Pricing Agreement (APA) timelines under the new procedural framework.

Key Changes Under the Income‑tax Act 2025 That Companies Must Know

The Income‑tax Act, 2025 is not merely a cosmetic renumbering exercise. According to the official text published by the Income Tax Department, the legislation consolidates, rationalises and, in several areas, substantively alters the rules that govern corporate taxation, assessment and dispute resolution in India. The accompanying Income‑tax Rules, 2026 overhaul return forms, TDS procedures and e‑filing protocols. Companies need to understand both the structural and the substantive shifts.

Procedural and Filing Changes Under the Income‑tax Rules, 2026

• Renumbered sections and schedules. Every internal cross‑reference in contracts, board resolutions, tax opinions and compliance manuals that cites the 1961 Act is now outdated. The CBDT has published a concordance table, but corporate tax compliance 2026 demands that each entity verify its own document library.
• Revised ITR forms. New return forms aligned with the 2025 Act have been notified on the e‑filing portal. Entities must reconcile their ERP tax‑module outputs with the revised form fields before the first filing deadline.
• TDS code restructuring. Section numbers governing TDS (formerly sections 192–206 of the 1961 Act) have been remapped. Payroll vendors and treasury teams must update withholding codes to avoid short‑deduction notices.
• E‑filing and faceless assessment integration. The e‑filing portal scope page confirms that the faceless assessment and appeal framework under section 144C has been carried forward, with procedural refinements, into the new Act. Companies must ensure their digital signature certificates and authorised signatories are current on the portal.

New Substantive Provisions Affecting Corporates

Three provisions merit particular attention for their immediate corporate tax compliance 2026 implications:

• Section 147A (reassessment powers). This new provision recasts the conditions under which an Assessing Officer may reopen a completed assessment. Industry observers expect it to be the single most litigated transitional provision in tax litigation India 2026 matters.
• Transfer pricing amendments (mapping from old section 92CA). The reference provisions for transfer pricing officer referrals and documentation thresholds have been reorganised. The practical effect is that pending TP audits must now cite the correct 2025 Act provision, and any future APA applications must conform to the new numbering.
• Section 139 / 140B equivalents (returns and belated/updated returns). The conditions for filing belated, revised and updated returns have been recalibrated. Late‑filing interest and penalty structures differ from the 1961 regime, and Finance Bill 2026 introduced further tweaks to these provisions before the Act commenced.

Effective Date and Transitional Provisions for Pending Assessments and Appeals

The Income‑tax Act, 2025 came into force on 1 April 2026, applying to the tax year 2026–27 and onwards. However, the transitional provisions, and the CBDT’s FAQs on Interplay and Transition, make clear that the relationship between old and new law is not a clean break. Pending proceedings initiated under the 1961 Act continue under their original procedural rules in most cases, but all references to 1961 Act sections are to be read as references to the corresponding 2025 Act sections from the date of commencement. Understanding these transitional provisions Income Tax 2025 is essential for every company with an open assessment or appeal.

Pending Assessments: What Stays, What Changes, and How to Respond to Fresh Notices

The CBDT transition FAQs confirm several critical points that directly affect corporate litigation strategy:

• Continuity of proceedings. An assessment, reassessment or appeal that was pending on 31 March 2026 does not lapse. The proceeding continues, but all statutory references migrate to the 2025 Act equivalents.
• Notices issued after 1 April 2026. Any new notice, whether for scrutiny selection, information request or reassessment, must cite the 2025 Act. A notice that incorrectly cites a repealed 1961 Act section may be challenged on jurisdictional grounds, though early indications suggest tribunals will take a pragmatic approach to clerical errors.
• Stay applications and demand recovery. Existing stay orders granted by ITAT or High Courts remain valid. However, fresh stay applications filed after 1 April 2026 must reference the new statutory provisions and any revised monetary thresholds introduced by Finance Bill 2026.
• Limitation periods. The transitional text preserves limitation periods that had already begun to run under the 1961 Act. Companies should independently verify that no deadline has been inadvertently shortened by the changeover.

Mapping Old to New Sections: Practical Examples

The CBDT’s concordance table and transition FAQs are the primary reference for mapping old provisions to new ones. In practice, tax teams should build an internal cross‑reference spreadsheet covering every section cited in their open litigation files, TDS certificates and compliance checklists. Where the mapping is one‑to‑one, the exercise is straightforward. Where the 2025 Act has split, merged or substantively altered a provision, as is the case with reassessment powers and certain penalty clauses, the mapping requires legal analysis, not just clerical substitution. KPMG’s March 2026 transition FAQs provide useful worked examples for practitioners navigating this exercise.

Immediate Corporate Compliance Checklist Under the Income‑tax Act 2025 India Impact

Compliance failures in the first months of a new tax regime tend to generate disproportionate notice volumes. The following checklist addresses the most common exposure points under the Income‑tax Rules, 2026.

TDS and Withholding, Quick Checklist

• Update TDS section codes. Every withholding entry from April 2026 onward must use the 2025 Act section number. Failure to do so can trigger short‑deduction demands and interest under the revised penalty provisions.
• Reconcile Form 26AS / AIS. The Annual Information Statement (AIS) and Form 26AS will now reflect 2025 Act section codes. Cross‑check employer TDS credits against the revised statement format.
• Vendor and contractor communications. Issue updated TDS certificates (Form 16 / 16A equivalents under the new Rules) citing the correct provisions. Notify non‑resident payees of any changes to withholding rates or certificate formats.
• Review lower / nil withholding certificates. Existing certificates issued under the 1961 Act may need renewal or re‑application under the 2025 Act framework. Check validity dates and portal status.

Return Filing Changes and Reconciliation

• New ITR form mapping. The e‑filing portal’s scope page for the new Act confirms revised ITR forms. Tax teams should run a dummy filing using test data to identify field‑mapping issues before the live deadline.
• Belated and updated returns. The conditions, timelines and additional tax payable for belated and updated returns differ under the 2025 Act. Companies that intended to file updated returns for earlier years under the old section 139(8A) should verify whether the transitional rules preserve that right or require action under the new equivalents.
• Audit report thresholds. Verify whether the turnover thresholds for mandatory tax audit have changed and confirm the correct form number for audit reports under the new Rules.

Transfer Pricing, Cross‑Border and Permanent Establishment Issues

The Income‑tax Act 2025 India impact on cross‑border transactions is significant, not because the arm’s‑length standard has changed, but because the procedural architecture around it has been reorganised. Companies with international related‑party dealings must recalibrate their documentation and audit‑response strategies for transfer pricing India 2026 requirements.

Transfer Pricing Audits, What to Expect in 2026

• Renumbered TP provisions. The provisions previously housed in Chapter X of the 1961 Act (sections 92 to 92F, 92CA, 92D, 92E) have been remapped into the new Act. Every TP study, benchmarking report and APA application must now cite the 2025 Act equivalents.
• Documentation thresholds. The monetary thresholds for maintaining contemporaneous TP documentation and for filing the master file / Country‑by‑Country Report (CbCR) should be verified against the new Rules. Industry observers expect CBDT to issue clarificatory circulars on thresholds within the first two quarters of the new regime.
• Pending TP adjustments. For audits already in progress under the 1961 Act, the transitional provisions preserve the procedural status quo, but the final assessment order must reference the 2025 Act. Companies should ensure their TP counsel updates all written submissions to reflect the new section numbers.

Permanent Establishment Considerations for MNEs

The PE definition under the 2025 Act broadly mirrors the 1961 Act formulation and India’s tax treaties. However, the restructured domestic law provisions interact with treaty PE articles in ways that require fresh analysis, particularly where Finance Bill 2026 introduced any modifications to the Significant Economic Presence (SEP) rules or the deemed PE thresholds for service PEs. MNEs should review their India operations through the lens of the new statutory text and obtain updated PE risk assessments from Indian tax counsel.

Dispute and Litigation Risk: Assessments, Reassessments and Section 147A

The most consequential dimension of tax litigation India 2026 is the reassessment landscape. The new Act’s section 147A reshapes the conditions under which an Assessing Officer may reopen a completed assessment, and the first wave of notices under this provision is expected within months of commencement.

Section 147A, Practical Implications and Defence Lines

Section 147A of the Income‑tax Act, 2025 consolidates and reformulates the reassessment powers that were previously scattered across sections 147, 148, 148A and 151 of the 1961 Act. The practical implications for corporates include:

• Revised trigger conditions. The threshold for initiating a reassessment, the “information” or “material” that justifies reopening, has been redefined. Companies must understand precisely what qualifies as actionable information under the new provision and prepare evidence to rebut reopening where the threshold is not met.
• Mandatory prior approval. The Act specifies the level of approval required before a reassessment notice can be issued. Defence strategies should include scrutinising whether the requisite approval was obtained and documented.
• Time limits for reopening. The outer time limit for reassessment has been recalibrated. Companies should verify the applicable limitation period for each assessment year, paying particular attention to how the transitional rules interact with years that were already beyond the old limitation window.
• Show‑cause and response procedure. The new provision codifies a pre‑notice inquiry stage. Companies receiving a preliminary inquiry should treat it as a litigation event: respond formally, preserve evidence and engage counsel immediately.

Statute of Limitations and Time Bars Under the New Act

A core defensive tool in any reassessment dispute is the statute of limitations. Under the 2025 Act, the limitation framework has been restructured. Tax teams should build a limitations calendar for every open assessment year, cross‑referencing the transitional provisions to confirm that no year has been inadvertently reopened by the changeover. Where the transitional mapping is ambiguous, particularly for years that were on the cusp of becoming time‑barred on 31 March 2026, the likely practical effect will be a spike in precautionary reassessment notices issued by revenue authorities seeking to preserve their jurisdiction.

Evidence and Document Production Expectations

The faceless assessment and appeal framework under the new Act places a premium on contemporaneous documentation. Companies should assemble and index the following files for each open or at‑risk assessment year:

• TP contemporaneous documentation (master file, local file, benchmarking study) updated with 2025 Act section references.
• Board resolutions and internal approvals for any transaction that may be scrutinised (related‑party pricing, capital structuring, cross‑border payments).
• Correspondence with the Income Tax Department, every notice, response and submission, indexed by 1961 Act and 2025 Act section numbers.
• Third‑party evidence (bank statements, contracts, invoices) supporting the positions taken in the return.
• Comparable company data and economic analysis used in TP benchmarking, preserved in the form available at the time of the original filing.

Practical Playbook: Notices, Settlement, Stay Applications and Litigation Triage

When a company receives an assessment or reassessment notice after 1 April 2026, the response must follow a disciplined sequence. The following playbook synthesises best practice for in‑house counsel and tax heads navigating the early months of the Income‑tax Act 2025 India impact.

• Step 1, Verify jurisdiction and section citations. Confirm that the notice cites the correct 2025 Act provision. A notice that cites a repealed 1961 Act section may be challengeable. Record the discrepancy formally.
• Step 2, Check limitation. Cross‑reference the assessment year against your limitations calendar. If the reassessment appears time‑barred under the transitional rules, prepare a preliminary objection.
• Step 3, Assemble the evidence pack. Pull the documentation checklist above and brief external counsel. Ensure all documents are digitised and portal‑ready for faceless proceedings.
• Step 4, File a timely response. Adhere strictly to the response deadline specified in the notice. Requests for extension should be made in writing on the portal and should cite specific operational reasons.
• Step 5, Evaluate stay and interim relief. If the notice results in a demand, assess whether to apply for a stay of demand before ITAT or the High Court. Stay applications under the new Act must reference the revised provisions and any updated monetary thresholds introduced by Finance Bill 2026.
• Step 6, Consider settlement alternatives. The Vivad se Vishwas (direct tax dispute resolution) scheme, if extended or re‑introduced for the 2025 Act transition, may offer a cost‑effective resolution for lower‑value disputes. Monitor CBDT circulars for any new settlement windows.
• Step 7, Litigation triage. Score each open dispute by quantum, likelihood of success, forum and strategic importance. Allocate external counsel resources to the highest‑risk matters first. For matters below a defined materiality threshold, consider compounding or settlement to free up bandwidth for significant disputes.

Early indications suggest that the Income Tax Department will adopt a pragmatic approach to transitional procedural defects in the first year of the new Act. Nonetheless, companies should not rely on administrative leniency. Formal, documented compliance with every procedural requirement is the safest posture during any transition period.

Conclusion: Six Priority Actions for Indian Companies

The Income‑tax Act 2025 India impact is structural and immediate. Companies that act now, rather than waiting for the first wave of notices, will be materially better positioned to defend their tax positions and avoid unnecessary disputes. The six priority actions are:

1. Update all TDS codes and return forms within 30 days to comply with the Income‑tax Rules, 2026.
2. Map every pending assessment and appeal from the 1961 Act to the 2025 Act using the CBDT transition FAQs, within 90 days.
3. Rebuild your TP documentation with updated section references and verify APA timelines, within 180 days.
4. Build a limitations calendar for every open assessment year, cross‑referencing the transitional provisions.
5. Prepare a litigation triage register scoring open disputes by quantum, forum and transitional risk.
6. Engage specialist tax litigation counsel for any matter involving section 147A reassessment exposure or ambiguous transitional mapping.

The transition from the 1961 Act to the 2025 Act is the most significant structural change to Indian direct tax law in over sixty years. The companies that treat it as a compliance event alone will be caught off guard; the companies that treat it as a litigation‑readiness exercise will be protected. For tailored guidance, Indian companies and MNEs should consult experienced tax controversy practitioners through the Global Law Experts lawyer directory.

Sources

1. Income‑tax Act, 2025 (official PDF), Income Tax Department
2. Income‑tax Rules, 2026, Income Tax Department e‑filing portal
3. CBDT FAQs on Interplay and Transition
4. ClearTax, Income‑tax Act, 2025 Summary
5. KPMG, FAQs on Transition to Income‑tax Act 2025
6. PIB Press Note, Introduction of the Income‑tax Act, 2025