For an operational creditor, an unpaid invoice can quickly become more than a commercial inconvenience. If the debt remains unpaid, the Insolvency and Bankruptcy Code, 2016 (IBC) provides a route to initiate corporate insolvency resolution proceedings against the defaulting company.

But a Section 9 application is not simply a sophisticated recovery suit. The IBC is concerned with insolvency resolution, and an operational creditor must satisfy several statutory requirements before the National Company Law Tribunal (NCLT) can admit the application. A defective demand notice, an existing dispute or incomplete documentation can derail an otherwise genuine claim.

The Supreme Court has repeatedly stressed that Section 9 cannot be used merely as a pressure mechanism for recovering disputed commercial dues.

Start With the Basic Question: Is There an Operational Debt?

Section 9 is available to an operational creditor after a corporate debtor commits a default in respect of an operational debt.

The underlying debt must fall within the statutory concept of operational debt. Broadly, this covers claims relating to goods or services, including employment-related dues, and certain statutory dues owed to the Central Government, State Government or a local authority.

There must also be a default. A creditor cannot invoke Section 9 merely because an invoice has been raised. The amount must have become due and payable and must not have been paid.

There is another important threshold. The minimum amount of default presently required for initiating a corporate insolvency resolution process is ₹1 crore, following the notification issued by the Ministry of Corporate Affairs on 24 March 2020. The threshold applies to applications filed after the notification, subject to the applicable legal position.

The Demand Notice Comes First

An operational creditor cannot ordinarily approach the NCLT directly.

Section 8 requires the creditor to first deliver a demand notice of the unpaid operational debt, or a copy of the invoice demanding payment, in the prescribed manner. The Insolvency and Bankruptcy (Application to Adjudicating Authority) Rules, 2016 prescribe Form 3 and Form 4 for this purpose.

The notice must be properly served. Under Rule 5, service can be effected at the corporate debtor's registered office by hand, registered post or speed post with acknowledgement due, or electronically to an appropriate whole-time director, designated partner or key managerial personnel, where applicable.

This is not a procedural formality to be treated casually.

The Supreme Court has recently reiterated that a Section 9 application can be filed only after the Section 8 demand notice has been served and the statutory ten-day period has expired without payment or a legally relevant dispute. The application must also be presented in the prescribed Form 5 with supporting evidence.

The 10 Day Window Is Critical

Once the corporate debtor receives the demand notice, it has 10 days to respond.

It may either make the payment or bring to the operational creditors notice the existence of a dispute or the pendency of a suit or arbitration proceeding relating to the dispute, provided the statutory requirements are met.

This is where many Section 9 cases are effectively decided.

In Mobilox Innovations Private Limited v. Kirusa Software Private Limited, (2018) 1 SCC 353, the Supreme Court established the leading test for determining whether a dispute is sufficient to defeat a Section 9 application.

The NCLT does not conduct a full trial at the admission stage. Instead, it asks whether there is a real dispute that existed before the demand notice, rather than a defence manufactured merely to avoid insolvency proceedings. A dispute need not ultimately succeed, but it must be genuine and not merely a patently feeble or unsupported assertion. The Supreme Court has continued to apply this principle.

That makes the chronology of correspondence extremely important.

A company that first raises quality objections, contractual breaches or defective-performance allegations only after receiving the Section 8 notice may face a substantially weaker defence than one that had documented those issues months earlier.

What Must the Operational Creditor File?

After the ten-day period expires without payment or a valid pre-existing dispute, the operational creditor may file the Section 9 application.

The application is made in Form 5 under Rule 6 of the Adjudicating Authority Rules.

In practical terms, the creditor should be prepared to establish:

1. the existence of the operational debt;
2. the amount claimed and the date it became due;
3. the occurrence of default;
4. the Section 8 demand notice;
5. proper service of that notice;
6. the absence of payment;
7. the absence of a genuine pre-existing dispute; and
8. compliance with the prescribed filing requirements.

Contracts, purchase orders, invoices, delivery records, work-completion documents, correspondence, ledger statements, bank records and acknowledgements of liability can become particularly important.

The objective is to give the NCLT a coherent documentary record rather than expecting the tribunal to reconstruct the commercial relationship from scattered invoices.

IBBI's prescribed Form 5 itself requires detailed particulars concerning the operational creditor, corporate debtor, debt and default.

The Most Common Defence: “There Was Already a Dispute”

For a corporate debtor defending a Section 9 application, the most important question is often not whether money remains unpaid, but why it remains unpaid.

A genuine pre-existing dispute can prevent admission even where an amount is claimed to be outstanding.

For example, if the debtor had already complained that goods were defective, services were incomplete, contractual milestones were not achieved or amounts were disputed under the contract before receiving the demand notice, that material may be sufficient to establish a dispute requiring investigation.

The Supreme Court has made clear that the NCLT is not expected to decide the underlying commercial dispute as though it were a civil trial. Where a genuine pre-existing dispute exists, the Section 9 route may fail at the threshold.

The defence, however, cannot simply consist of a bare denial. The correspondence and documents should demonstrate that the dispute actually existed before the insolvency demand was issued.

Section 9 Is Not a Debt-Recovery Shortcut

This distinction is fundamental.

The Supreme Court has repeatedly cautioned that insolvency proceedings cannot be used as a substitute for ordinary debt recovery or as a coercive mechanism against a solvent company over disputed dues. In 2024, the Court reiterated that the IBC is concerned with insolvency resolution and should not be misused to secure preferential recovery by an individual creditor.

That does not make Section 9 weak. It makes it specific.

Where there is a clear operational debt, an established default, no genuine pre-existing dispute and compliance with the statutory procedure, Section 9 can provide a powerful insolvency remedy.

But where the real dispute is contractual. for example, whether services were performed properly or whether damages are payable a civil suit, arbitration or another appropriate contractual remedy may be more suitable.

Practical Mistakes Can Undermine a Strong Claim

Operational creditors should therefore avoid treating Section 9 as a form-filling exercise.

The creditor should first examine the contract, payment terms, invoices and correspondence together. It should identify whether any dispute existed before the demand notice. It should calculate the default accurately and confirm that the applicable threshold is satisfied.

Most importantly, service of the Section 8 notice should be documented properly.

For the corporate debtor, the response should be equally deliberate. If there is a genuine dispute, the debtor should identify it clearly and support it with contemporaneous records. Silence followed by a detailed defence only after the Section 9 application is filed may create an evidentiary problem.

The Practical Takeaway

A successful Section 9 application depends on more than proving that an invoice was not paid.

The operational creditor must establish a qualifying operational debt and default, cross the ₹1 crore threshold, serve a legally compliant Section 8 notice, wait the prescribed ten days and demonstrate that there is no genuine pre-existing dispute preventing admission.

For the corporate debtor, the strongest defence is usually not an after-the-fact denial. It is contemporaneous evidence showing that the alleged debt was genuinely disputed before the insolvency process was invoked.

Ultimately, Section 9 works best when used for what it was designed to address: a clear operational default capable of triggering insolvency resolution—not an ordinary commercial disagreement dressed up as an insolvency proceeding.