The Act asks whether the supplier is a micro or small enterprise, not who owns it. A supplier’s membership of the buyer’s group neither disqualifies it nor entitles it. What group status does is add a second layer of rules, namely related-party approval and disclosure, which has to be satisfied separately.

1. The test the statute applies

Sections 15 to 17 protect a “supplier”. Under section 2(n) that is a micro or small enterprise that has filed a memorandum, together with certain bodies that sell goods or services produced by such enterprises. Nothing in that definition, or in clause (h) of section 43B, excludes a supplier because it is a related party of the buyer. The text of clause (h) refers simply to any sum payable to a micro or small enterprise.

2. Why group suppliers are often misclassified

A group supplier is often assumed to be outside the MSME regime because it is “captive”, or assumed to be inside it because it holds a Udyam certificate. Both assumptions skip the facts. Classification works enterprise by enterprise on investment and turnover, linked to PAN and GST data (Article 5), so the buyer should check the certificate, the category on the date of supply and whether the figures in the certificate match the supplier’s latest return. If a group has structured a supplier so as to stay within a category, or the memorandum contains false information, section 27 penalties are in play, revised by the 2026 Amendment Act once commenced.

3. What follows if the supplier qualifies

•      Payment deadline and interest: sections 15 and 16 apply to the dues. The fact that the creditor is a group company does not suspend them, whatever the intercompany agreement says, and a supplier may be commercially unlikely to sue.

•      Tax: section 43B(h) has no related-party carve-out, so late payment across a year-end defers the deduction, and section 23 denies a deduction for the interest.

•      Reporting: MSME-1 and the section 22 note (Articles 4 and 6) include the supplier on the same footing as any other MSE creditor.

4. The related-party layer

Separate from all of the above, the transactions must meet company-law and accounting requirements for related-party dealings. For a company, section 188 of the Companies Act and the applicable rules require board approval, and in prescribed cases shareholder approval, for specified transactions with related parties, and the transactions must be disclosed under the applicable accounting standard. For a listed company, Regulation 23 of the SEBI LODR Regulations adds audit committee and shareholder requirements. Pricing and credit terms should be defensible as arm’s length, and terms offered to a group supplier that are better or worse than those given to unrelated MSE suppliers should be explained in the record.

5. Documents to hold

Intercompany agreement and purchase orders; invoices and proof of actual supply; acceptance and delivery records; the supplier’s Udyam certificate and the date of registration; board and audit committee approvals; related-party disclosure schedules; and a ledger trail showing payment dates. Where the amounts are material, obtain a legal opinion on the supplier’s status before taking a position in a filing or in a dispute.