Section 43B(h) MSME Year-End Vendor Payments: 15/45-Day Verification, Overdue Interest Disallowance & Form 3CD Clause 26 Disclosure
Updated: Sep 28
Among all statutory compliance mandates confronting Indian businesses, corporate boards, and tax auditors for Assessment Year 2026-27, Section 43B(h) of the Income-tax Act, 1961 stands as the most consequential cash-flow and disallowance provision.
Update — 28 September 2026: CBDT changed the specified ordinary AY 2026–27 tax-audit report deadline from 30 September to 21 October 2026 and the related audited return deadline from 31 October to 21 November 2026. Section 92E / Form 3CEB cases retain a separate timeline. Official Income Tax Department announcement.
Introduced by the Finance Act, 2023 and rigorously enforced across corporate and tax audit assessments, Section 43B(h) mandates that any sum payable by an assessee to a Micro or Small Enterprise beyond the time limit specified in Section 15 of the Micro, Small and Medium Enterprises Development (MSMED) Act, 2006 shall be disallowed as a business deduction in the year of incurrence.
Crucially, Section 43B(h) operates under a severe statutory deviation: the standard proviso to Section 43B—which permits deduction if payment is discharged on or before the due date of filing the return of income under Section 139(1)—DOES NOT APPLY to clause (h). If an invoice from a registered Micro or Small supplier remains unpaid beyond the 15-day or 45-day statutory limit as of March 31, the entire expenditure is added back to taxable income, immediately inflating corporate tax liability at 25% to 35%.
Furthermore, delayed payments trigger mandatory compound interest at three times the RBI Bank Rate under Section 16 of the MSMED Act, and by virtue of Section 23 of the MSMED Act, this penal interest is permanently inadmissible as a tax deduction.
At PGT & Associates, our statutory audit and direct tax practice advises manufacturing conglomerates, distribution giants, and mid-market enterprises on designing automated MSME payment tracking systems, vendor classification matrices, and Form 3CD audit defenses. Below is an exhaustive operational masterclass detailing the 15/45-day calculation rules, trader vs. manufacturer carve-outs, Clause 22 and Clause 26 reporting protocols, and audit workpaper documentation.
1. The Statutory Architecture: Section 43B(h) vs. MSMED Act
Section 43B(h) creates a statutory bridge between the Income-tax Act, 1961 and Sections 15 and 16 of the MSMED Act, 2006:
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2. The 15-Day vs. 45-Day Payment Rule: Exact Calculation
The calculation of the statutory deadline under Section 15 depends entirely on whether a formal, written agreement exists between the buyer and the supplier:
Year-End Cutoff Scenarios (FY Ended March 31)
Understanding the exact year-end tax consequence is critical for closing accounts:
Scenario A (Invoice March 10, Paid March 24 - Within 15 Days):
Tax Impact: Fully deductible in the current financial year. No Section 43B(h) disallowance.
Scenario B (Invoice March 20, Credit Period 30 Days, Paid April 15 - Within 30 Days):
Tax Impact: Unpaid on March 31, BUT paid within the permissible 30-day agreed period falling in the subsequent financial year. Allowable in the current financial year because the statutory time limit had not expired as of March 31.
Scenario C (Invoice February 10, Credit Period 30 Days, Paid April 10 - Delayed Beyond 45 Days):
Tax Impact: The 45-day deadline expired on March 27. The amount was outstanding on March 31. 100% DISALLOWED in current financial year. The deduction will be allowed only in the subsequent financial year when actually paid.
3. The Wholesale & Retail Trader Exemption (Office Memorandum Analysis)
One of the most critical legal exemptions under Section 43B(h) concerns suppliers registered as Wholesale or Retail Traders:
MSME Ministry OM No. 5/2(2)/2021-E/P & G/Policy dated July 2, 2021: The Ministry permitted retail and wholesale trades to register on the Udyam portal under designated NIC codes (Divisions 45, 46, and 47) strictly for the limited purpose of Priority Sector Lending (PSL).
CBDT FAQs & Judicial Position: The benefits of Chapter V of the MSMED Act (including delayed payment protection under Section 15 and Section 16) apply exclusively to enterprises engaged in the manufacture or production of goods, or the rendering of services.
Audit Verification Rule: If an outstanding vendor holds an Udyam Certificate showing activities categorized purely as "Trader" (Retail / Wholesale), Section 43B(h) DOES NOT APPLY. No disallowance can be made in Form 3CD Clause 26 for amounts due to traders, even if payment exceeds 45 days.
4. Reporting Architecture in Form 3CD: Clause 22 & Clause 26
Tax auditors must report MSME defaults across two distinct clauses in Form 3CD:
Form 3CD Clause 22 Sub-Schedule Breakdown
Clause 22 requires the auditor to disclose:
The principal amount and interest due thereon remaining unpaid to any supplier as at the end of each accounting year.
The amount of interest paid by the buyer under Section 16 of the MSMED Act.
The amount of interest due and payable for the period of delay in making payment.
The amount of interest accrued and remaining unpaid at the end of each accounting year.
The amount of further interest remaining due and payable in succeeding years.
5. Audit Workpaper Architecture & Verification Protocol
To protect the client against arbitrary additions during NFAC faceless assessments, tax auditors must establish and verify the following institutional workpapers:
Annual Udyam Registration Verification: Collecting and verifying Udyam Registration Certificates for all active sundry creditors as of March 31. Verifying enterprise status (Micro, Small, or Medium) and primary activity (Manufacturer, Service Provider, or Trader) directly on the Udyam verification portal.
Written Contract Review: Examining purchase orders (POs), supply agreements, and master service agreements (MSAs) to identify documented credit terms. Where POs state "Payment within 60 days", documenting the statutory capping at 45 days.
Objection Dispute Documentation: Under the Explanation to Section 15, where any objection is made in writing by the buyer regarding the delivery or quality of goods/services within 15 days of delivery, the "day of acceptance" is deferred to the day on which the dispute is resolved by the supplier. Auditors must verify written objection notices to substantiate deferred payment due dates.
Capital Expenditure Verification: Clarifying that Section 43B(h) applies strictly to expenditures debited to the Profit and Loss Account. Unpaid balances for capital goods (e.g., machinery suppliers) do not trigger Section 43B(h) P&L disallowances, although interest under Section 16 remains inadmissible.
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6. Frequently Asked Questions (MSME Tax Audit Advisory)
Q1: Does Section 43B(h) apply if the buyer is also a Micro or Small enterprise?
Yes. Section 43B(h) applies to any assessee carrying on business or profession whose books of accounts are audited under Section 44AB or who computes income under regular provisions. The status of the buyer is irrelevant; if the buyer owes money to an eligible Micro or Small supplier beyond statutory limits, the disallowance applies.
Q2: What if the supplier registers under Udyam AFTER March 31?
The status of the supplier as a Micro or Small enterprise must be valid on the date of the transaction (invoice date). If a supplier obtains an Udyam Certificate subsequent to the supply of goods or after the end of the financial year, Section 43B(h) cannot be applied retrospectively to that transaction.
Q3: If an assessee is covered under Section 44AD presumptive taxation, does Section 43B(h) apply?
No. Under Section 44AD(1), the presumptive net profit rate (8% or 6%) operates with a non-obstante clause overriding Sections 28 to 43C. Therefore, Section 43B(h) disallowances do not apply to eligible businesses opting for presumptive taxation under Section 44AD.
Q4: Can unadjusted advances paid to MSME suppliers be set off against outstanding invoices?
Yes. If genuine, unencumbered advances have been paid to the supplier prior to the invoice date, the outstanding liability is deemed discharged to the extent of the advance balance, provided the ledger reflects prompt set-off upon invoice generation.
Q5: If a company pays an overdue MSME invoice in May 2026 before filing Form 3CD, is it disallowed for FY 2025-26?
Yes. Unlike other clauses of Section 43B (such as statutory dues or bonus), Section 43B(h) has no proviso allowing deduction upon payment before the return filing date. If the statutory 15/45-day window expired on or before March 31, 2026 without payment, it is 100% disallowed for FY 2025-26 and can only be claimed in FY 2026-27.
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Audit Assurance Desk: 📞 +91-87994-99189
Direct Confidential Email: contact@pgtandassociates.com
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