Section 43B(h) Compliance Guide: MSME Payment Rules & Disallowance

Key Takeaways

• No New "Direct Tax Code 2025": The compliance changes stem from Section 43B(h), a new clause within the existing Income Tax Act, 1961, introduced by the Finance Act, 2023. It is not part of a new, separate tax code.
• Strict Payment Deadlines for MSME Suppliers: Payments to Micro and Small Enterprises (MSEs) must be made within 45 days if a written agreement exists, or within 15 days if there is no agreement. These timelines are mandated by the MSMED Act, 2006.
• Severe Tax Disallowance: Failure to pay within these deadlines results in the disallowance of the expense for that financial year. The deduction can only be claimed in the year the payment is actually made, leading to a direct increase in taxable income and potential cash flow strain.
• Mandatory Audit Reporting: Tax auditors are now required to specifically report details of payments due to MSEs and any delays, making compliance highly visible and non-negotiable.

PART 1: EXECUTIVE SUMMARY

(Target: 200 Words. Clear overview of the tax change.)

This guide provides a detailed analysis of Section 43B(h), a critical amendment to the Income Tax Act, 1961. It is imperative to clarify that this change is not part of a transition to a new Direct Tax Code 2025 but is an enhancement of the existing legal framework, effective from the Assessment Year 2024-25.

• The Old Law (Pre-Finance Act 2023): Previously, under Section 43B, while certain deductions were allowed only on an actual payment basis, there were no specific, stringent timelines linked to a disallowance for payments to Micro and Small Enterprises (MSEs). The general provision allowed for deductions if payments were made before the due date of filing the income tax return.

• The New Law (Section 43B(h)): The new clause (h) mandates that any sum payable to an MSE supplier is deductible in a financial year only if it is paid within the timeframe specified in Section 15 of the MSMED Act, 2006. This timeframe is 45 days with a written agreement and 15 days without one. Critically, the grace period for payment until the tax return filing date does not apply to this clause.

• Who is Impacted: This provision impacts all corporate and non-corporate assessees who procure goods or services from enterprises registered as "Micro" or "Small" under the Udyam portal. The responsibility for compliance rests entirely on the buyer, who must now meticulously track vendor status and payment deadlines to avoid adverse tax consequences.

PART 2: DETAILED TAX ANALYSIS

1. Background & Corporate Impact

The introduction of Section 43B(h) by the Finance Act, 2023, is a deliberate legislative measure to address the persistent issue of delayed payments to Micro and Small Enterprises (MSEs), which often cripples their working capital and operational stability. By linking the buyer's tax deduction directly to timely payment, the government has created a powerful incentive for financial discipline and strengthened the economic ecosystem for smaller businesses.

Corporate Impact:

• Increased Tax Liability: The most direct impact is the potential for a significantly higher tax outgo. An expense disallowed under this section is added back to the taxable income for the year, even though the liability to pay the vendor remains.
• Cash Flow & Treasury Management: Corporations must overhaul their payment cycles. The former practice of extending creditor payments to manage cash flow is no longer viable for MSE vendors. Treasury and finance departments must plan for accelerated payment timelines, potentially impacting liquidity.
• Procurement and Vendor Onboarding: The burden of identifying a vendor's MSME status falls on the buyer. This necessitates a robust due diligence process during vendor onboarding, requiring suppliers to provide their Udyam Registration Certificates and for these to be verified.
• Contractual Obligations: All procurement contracts with MSEs must now be reviewed to ensure payment terms are explicitly stated and do not exceed 45 days. Any agreement with a credit period beyond 45 days will be read down to 45 days for the purpose of this section.

2. 1961 Act (Pre-Amendment) vs. Current Law (With Section 43B(h))

The fundamental change introduced by clause (h) is the removal of the leniency that the first proviso to Section 43B offered. The table below illustrates the stark difference in compliance for MSE payments.

3. Audit & ERP Reporting Requirements

Compliance with Section 43B(h) is now a key focus area during statutory and tax audits. The reporting requirements have been enhanced to ensure transparency and enforcement.

• Tax Audit Report (Form 3CD): The Central Board of Direct Taxes (CBDT) has revised Form 3CD, specifically amending Clause 22 to mandate detailed reporting of delayed payments to MSEs that are liable for disallowance under Section 43B(h). Auditors must verify and report the total amount of payments delayed beyond the statutory deadlines.
• Auditor's Responsibility: The tax auditor's role has expanded. They are now required to:
  • Verify the management's process for identifying MSE suppliers.
  • Scrutinize the ageing report of creditors to identify outstanding dues to these vendors.
  • Confirm whether payments have been made within the stipulated 15/45 day timelines.
  • Quantify and report the amount to be disallowed under Section 43B(h).
• ERP System Enhancements: To facilitate compliance and auditing, corporates must upgrade their Enterprise Resource Planning (ERP) systems. Key modifications include:
  • Vendor Master File: Adding a mandatory field to flag suppliers as Micro, Small, or Medium enterprises based on their Udyam registration.
  • Automated Payment Alerts: Configuring the system to generate alerts for invoices from MSE vendors that are approaching their 15 or 45-day payment deadline.
  • Customized Reporting: Creating reports that can be readily generated to show the status of all payables to MSEs, clearly distinguishing between timely and delayed payments for audit purposes.

4. Financial Controller's Action Plan 2026

To navigate this new compliance landscape effectively, Financial Controllers must implement a structured action plan.

1. Immediate Vendor Re-classification (Q1-Q2 2026):

   • Initiate a formal communication drive to all existing suppliers requesting them to furnish their latest Udyam Registration Certificate.
   • Task a dedicated team to verify the status of each vendor on the official Udyam portal.
   • Update the vendor master database in the ERP system with the correct MSME status.

2. Process & Policy Overhaul (Q2 2026):

   • Procurement Policy: Amend the policy to make Udyam registration a mandatory part of the vendor onboarding process for all domestic suppliers.
   • Accounts Payable SOP: Redraft the Standard Operating Procedure for invoice processing. All invoices from MSEs must be flagged for priority processing.
   • Contractual Terms: Work with the legal department to ensure all new and renewed contracts with MSEs explicitly state payment terms that are compliant with the 45-day rule.

3. System & Reporting Integration (Q2-Q3 2026):

   • Collaborate with the IT department to implement the necessary ERP system changes for vendor flagging and payment alerts.
   • Develop and test customized ageing reports for MSE payables that can be reviewed weekly by the finance team.

4. Training & Awareness (Q3 2026):

   • Conduct mandatory training sessions for procurement, accounts payable, and internal audit teams on the implications of Section 43B(h).
   • Ensure all relevant personnel understand the financial impact of non-compliance.

5. Pre-Audit and Year-End Vigilance (Q4 2026 & Onwards):

   • Starting from December, conduct monthly reviews of the MSE creditor list to ensure all dues are cleared before the financial year-end.
   • Prepare a preliminary disallowance working sheet to project any potential tax impact and take corrective action before year-end closing.
   • Maintain a clear audit trail with all vendor communications, certificates, and proofs of payment.

5. Final Advisory

Section 43B(h) is not merely a procedural update; it represents a significant shift in corporate financial responsibility. The risk of disallowance is absolute and carries a direct financial cost in the form of increased tax liability. Proactive compliance is the only viable strategy. Our team advises that businesses view this not as a burden, but as an opportunity to foster stronger, more reliable supply chains by ensuring the financial health of their MSE partners. The focus must be on creating robust internal systems for vendor identification, invoice tracking, and payment prioritization. Failure to adapt will inevitably lead to avoidable financial penalties and increased scrutiny from tax authorities.

💡 Corporate Tax Tip: Ensure your business is fully compliant with the new Direct Tax Code 2025 to avoid hefty corporate penalties.