Key Takeaways
- Continuity of Disallowance: The Direct Tax Code (DTC) 2025, effective April 1, 2026, retains the penalty for Tax Deducted at Source (TDS) defaults. The 30% disallowance of expenditure for non-deduction or non-payment of TDS on payments to residents continues under the new law.
- New Section Reference: The provision corresponding to Section 40(a)(ia) of the Income Tax Act, 1961, is now located in Section 35(b) of the Income Tax Act, 2025. Corporate accounting and ERP systems must be updated to reflect this change.
- Structural Consolidation: All TDS provisions for non-salary payments are consolidated under a single section (Section 393) in the new Act. This structural change may impact judicial interpretations, particularly concerning deductions made under a wrong, but bona fide, TDS category.
- Binding Nature of Circulars: A significant change under the DTC 2025 is Section 400(2), which makes CBDT circulars on TDS matters mandatorily binding on both taxpayers and tax authorities. This elevates the importance of official clarifications and may reduce the scope for interpretational leniency previously accepted by courts.
PART 1: EXECUTIVE SUMMARY
This compliance guide provides a detailed analysis of the transition concerning the disallowance of business expenditure due to non-compliance with TDS norms, as India migrates from the Income Tax Act, 1961, to the new Income Tax Act, 2025 (referred to as the Direct Tax Code or DTC).
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The Old Law (1961): Section 40(a)(ia) of the 1961 Act mandated a disallowance of 30% on specified payments to residents—such as interest, commission, rent, and professional fees—if tax was not deducted at source (TDS) or was not deposited with the government by the income tax return filing due date. This provision was a critical tool for ensuring TDS compliance, directly impacting a company's taxable income by restricting otherwise legitimate expense claims. Initially, the disallowance was 100%, which was later amended to 30% to reduce the hardship on taxpayers.
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The New Law (2025): The Direct Tax Code, effective from Tax Year 2026-27 (Financial Year 2026-27), continues this compliance mechanism. The core principle of a 30% disallowance for TDS defaults on payments to residents is retained. The relevant provision is now housed under Section 35(b) of the Income Tax Act, 2025. While the disallowance percentage and the fundamental trigger remain the same, the DTC introduces structural simplifications, such as consolidating all non-salary TDS provisions into a single section (Section 393) and making CBDT circulars statutorily binding.
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Who is Impacted: This change impacts all corporate entities, firms, and individuals subject to tax audit who make payments to residents that are covered under TDS provisions. Financial controllers, tax heads, and compliance officers are the primary stakeholders who must ensure their systems, processes, and internal controls are updated to align with the new section numbers and the stricter compliance environment heralded by the DTC 2025.
PART 2: DETAILED TAX ANALYSIS
1. Background & Corporate Impact
The disallowance of expenditure under Section 40(a)(ia) of the 1961 Act was introduced by the Finance Act, 2004, to enforce the timely deduction and remittance of TDS. Non-compliance directly inflates a company's taxable profit, leading to a higher tax outgo. For example, on a professional fee payment of ₹10,00,000 where TDS was not deducted, a disallowance of ₹3,00,000 (30% of the expense) would be added back to the company's income, resulting in an increased tax liability.
Under the Direct Tax Code 2025, the financial impact remains identical. The continuity of this provision under Section 35(b) underscores the government's sustained focus on TDS as a cornerstone of tax collection. The corporate impact is threefold:
- Financial: Direct increase in tax liability for any lapse in TDS compliance.
- Operational: Mandates robust internal processes for tracking, deducting, and depositing TDS for all vendor payments.
- Compliance Risk: Heightened risk due to the new binding nature of CBDT circulars under Section 400(2), which may limit the success of legal challenges based on "bona fide" or "possible" interpretations of the law.
2. 1961 Act vs 2025 Direct Tax Code
This table outlines the key comparative aspects of the TDS disallowance provision between the two acts.
| Feature | Income Tax Act, 1961 | Direct Tax Code (Income Tax Act, 2025) | Analysis of Change & Corporate Action Point |
|---|---|---|---|
| Governing Section | Section 40(a)(ia) | Section 35(b) | Change: The legal reference has been updated. Action: All internal documentation, accounting software, and legal templates must be updated with the new section number to ensure accuracy in records and correspondence. |
| Disallowance Rate | 30% of the expenditure payable to a resident. | 30% of the expenditure. | Change: No change in the disallowance rate. The financial penalty for non-compliance remains consistent. Action: Reinforce internal training on the significant financial impact of TDS errors. |
| TDS Section Structure | Multiple distinct sections for different payments (e.g., 194C, 194J, 194I). | Consolidated under one primary section, Section 393, for all non-salary payments. | Change: Major structural simplification. Action: This may create new compliance challenges. An error in selecting the correct TDS code/rate within the consolidated section could be viewed less leniently than quoting an entirely different section number under the old act. ERP systems need to be reconfigured to map to the new consolidated structure. |
| Status of CBDT Circulars | Binding on tax authorities, but taxpayers could take a contrary "possible view" in litigation. | Mandatorily binding on both the taxpayer and the tax authorities under Section 400(2). | Change: This is a fundamental shift, reducing legal ambiguity. Action: Compliance teams must rigorously follow all CBDT circulars and FAQs. The defense of having a different "bona fide interpretation" is significantly weakened. |
| Relief Provision | Deduction is allowed in the subsequent year if TDS is deposited later. Proviso also grants relief if the payee has paid taxes on the income. | The relief mechanism is expected to continue, allowing the deduction in the year the TDS is eventually paid. | Change: The fundamental relief mechanism remains. Action: While relief is available, it creates cash flow and reconciliation issues. The primary goal should always be first-time compliance. |
| Terminology | "Previous Year" and "Assessment Year." | "Tax Year" (1st April to 31st March). | Change: Simplification of terminology. Action: Update internal and external communication to use the term "Tax Year 2026-27" onwards to align with the new law. |
3. Audit & ERP Reporting Requirements
The transition to DTC 2025 necessitates immediate and comprehensive updates to corporate audit and enterprise resource planning (ERP) systems.
For Statutory and Tax Audits:
- Audit Checklists: All internal and external audit checklists must be revised to refer to Section 35(b) instead of Section 40(a)(ia).
- Reporting: Auditors reporting in Form 3CD (or its new equivalent) will need to verify compliance under the new section numbers.
- System Logs: Audit trails must capture the correct TDS sections (as per the new consolidated Section 393) applied at the time of vendor invoice processing. Any manual overrides must be flagged for review.
For ERP Systems (e.g., SAP, Oracle):
- Master Data Update: The chart of accounts, tax codes, and withholding tax configurations must be mapped to the new sections of the DTC 2025. For instance, payment codes previously linked to Section 194J must now be linked to the corresponding provision within Section 393.
- Reporting Logic: All customized reports that extract data for TDS returns (e.g., the new Form 140, replacing Form 26Q) and disallowance computation must be reprogrammed. Reports should be capable of flagging potential disallowances under Section 35(b).
- Vendor Master Files: A thorough review of vendor master files is crucial to ensure correct TDS rates are applied from April 1, 2026. This includes verifying PAN details and applying higher rates for non-filers as per the prevailing rules.
4. Financial Controller's Action Plan 2026
Our team recommends the following phased action plan for a seamless transition:
Phase 1: Knowledge & Impact Assessment (Present - Q3 2025)
- Form a Cross-Functional Team: Involve Tax, Finance, IT, and Procurement departments.
- Conduct Training Sessions: Organize detailed workshops on the DTC 2025, focusing on changes in TDS (Sections 35(b), 393) and other related provisions.
- Perform a Gap Analysis: Review current TDS processes against the requirements of the new Act. Identify weaknesses in vendor onboarding, invoice processing, and payment cycles.
Phase 2: System & Process Reconfiguration (Q4 2025 - Q1 2026)
- Engage ERP Consultants: Begin the technical process of updating the ERP system. This includes creating and testing new tax codes and reporting logic in a development environment.
- Redraft SOPs: Update all Standard Operating Procedures related to accounts payable and tax compliance to reflect the new legal framework.
- Vendor Communication: Proactively inform all vendors about the transition and re-verify their information to ensure compliance from day one.
Phase 3: Implementation & Go-Live (April 1, 2026, Onwards)
- Deploy System Changes: Move the tested ERP configurations to the live environment.
- Conduct Mock Drills: Run a mock TDS cycle for the first month (April 2026) to ensure systems are calculating, deducting, and reporting correctly.
- First Return Filing: Pay close attention to the first quarterly TDS return filing under the new Act to ensure accuracy and timeliness.
5. Final Advisory
The transition to the Direct Tax Code 2025, while aimed at simplification, introduces critical changes that require proactive management. The retention of the 30% disallowance under the new Section 35(b) confirms that TDS compliance remains a high-priority area for tax authorities. The consolidation of TDS sections and the binding nature of CBDT circulars will likely lead to a stricter compliance regime where errors have immediate and significant financial consequences.
Corporations must view this transition not merely as a change in section numbers but as an opportunity to strengthen their internal financial controls. A robust, technology-driven TDS compliance framework is no longer just a best practice; it is a fundamental necessity for mitigating tax risk under the new Act. Our team strongly advises a thorough review and overhaul of existing systems and processes to ensure full compliance by the April 1, 2026 deadline.
💡 Corporate Tax Tip: Ensure your business is fully compliant with the new Direct Tax Code 2025 to avoid hefty corporate penalties.