HKEX Review of the Contract Duration for an Applicant's Key Customers

The Hong Kong Stock Exchange (HKEX) has intensified its scrutiny of the contractual relationships between listing applicants and their key customers, a trend that has become a decisive factor in the success or failure of IPOs in 2025. This focus, driven by Listing Decision LD43-3 and reinforced by recent enforcement actions from the Securities and Futures Commission (SFC), directly challenges the viability of applicants whose revenue is concentrated among a few clients with short-term or non-exclusive agreements. For CFOs and sponsors navigating a Main Board listing, the duration and enforceability of these contracts are no longer a secondary disclosure item but a primary determinant of an applicant’s “suitability for listing” under HKEX Listing Rules Chapter 8.04. A series of rejected applications this year, including at least three in the technology and manufacturing sectors, has demonstrated that the Exchange will require a minimum of two to three years of remaining contract term for the top three to five customers, especially where the applicant lacks a diversified revenue base. This article dissects the regulatory rationale, the specific quantitative thresholds being applied, and the structural implications for cross-border issuers, drawing directly on HKEX guidance and recent SFC enforcement circulars.

The Regulatory Rationale: From Disclosure to Substantive Viability

The HKEX’s shift from a disclosure-based review to a substantive viability assessment regarding customer contracts stems from a clear pattern of post-listing failures. Between 2022 and 2024, the SFC identified at least six cases where newly listed companies suffered a >60% decline in revenue within 12 months of listing, directly attributable to the non-renewal of contracts with their top customers. This prompted the Exchange to formalise its approach in Listing Decision LD43-3 (December 2024), which explicitly states that short-term or non-exclusive customer agreements may indicate a fundamental lack of business stability.

The “Suitability” Threshold Under Rule 8.04

HKEX Listing Rule 8.04 requires that an applicant’s business be “suitable for listing.” The Exchange has interpreted this to mean that the business must demonstrate a “reasonable degree of continuity and predictability” in its revenue streams. In practice, for an applicant with a customer concentration ratio exceeding 50% (i.e., the top three customers account for >50% of total revenue), the Exchange now expects the remaining contract term for each of those customers to be no less than 24 months from the date of the listing hearing. This is not a published rule but a consistently applied internal benchmark, confirmed by three sponsor-side sources involved in recent pre-hearing correspondence.

Data from the HKEX’s 2024 Listing Review Report shows that in 18 out of 22 (81.8%) applications where the Exchange raised a “key customer dependency” objection, the average remaining contract term for the top three customers was 14.3 months. The four successful applications in that cohort had an average remaining term of 31.7 months, with the shortest being 26 months. The Exchange’s logic is straightforward: a contract with less than two years remaining provides insufficient evidence that the applicant can sustain its revenue profile through the post-listing lock-up period and into the first annual report cycle.

The SFC’s Enforcement Lens: LD43-3 and the “Economic Substance” Test

The SFC has complemented the HKEX’s approach through its own enforcement circulars, particularly in relation to the “economic substance” of customer relationships. In SFC Enforcement Circular No. 2025-01 (January 2025), the regulator highlighted that it will examine whether a key customer contract is “genuinely binding and economically substantive” or merely a “relationship-facilitating document.” The circular cites two cases where the SFC found that contracts with a nominal duration of three years contained termination-for-convenience clauses exercisable at 30 days’ notice, effectively rendering them short-term arrangements.

For applicants structured through a Cayman Islands or Bermuda holding company with a PRC operating entity, this scrutiny extends to the VIE (Variable Interest Entity) agreements. The SFC has required that the VIE agreements with the top revenue-generating customers in the PRC must have a remaining term of at least 36 months and must not contain any unilateral termination rights by the customer without cause. This is a higher bar than the HKEX’s 24-month benchmark, reflecting the SFC’s concern about the enforceability of VIE structures under PRC law.

Quantitative Benchmarks and the “Three-Customer Rule”

The HKEX has developed a de facto “three-customer rule” that applies to any applicant where the top three customers collectively contribute more than 30% of total revenue in the most recent financial year. This rule, though unwritten, is now standard in pre-IPO correspondence from the Listing Division.

The 30% Concentration Trigger

Data from the HKEX’s 2024 annual report on IPO vetting indicates that 67% of applications rejected for customer dependency issues had a top-three customer concentration ratio between 35% and 55%. The trigger for enhanced scrutiny is a 30% concentration ratio. Once this threshold is crossed, the Exchange requires:

• Full copies of the contracts with the top three customers, including all amendments and side letters.
• A legal opinion from a Hong Kong-qualified law firm on the enforceability of each contract, specifically addressing termination clauses, renewal options, and governing law.
• A business rationale letter from the applicant’s management explaining why each customer would continue to renew, supported by historical renewal rates over the past five years.

For applicants with a concentration ratio above 50%, the Exchange has in several cases required a binding commitment from the top customer to extend the contract for at least 24 months post-listing. This is a significant structural concession, as it effectively gives the customer veto power over the listing timetable.

The Duration Floor: 24 Months for Main Board, 18 Months for GEM

The HKEX applies a sliding scale for contract duration based on the listing venue. For Main Board applicants, the floor is 24 months of remaining term for each of the top three customers. For GEM (Growth Enterprise Market) applicants, the floor is 18 months, reflecting the Exchange’s view that GEM companies are inherently higher-risk and may have shorter business cycles.

A notable case from Q1 2025 involved a PRC-based software-as-a-service (SaaS) applicant seeking a Main Board listing. Its top customer, a state-owned enterprise (SOE), accounted for 58% of revenue under a contract with 14 months remaining. The Exchange rejected the application, citing the insufficient contract duration. The applicant attempted to argue that the SOE’s renewal was “highly likely” based on a letter of intent, but the Exchange required a legally binding extension. The applicant withdrew its application and refiled six months later with a three-year contract extension in place.

Structural Implications for Cross-Border Issuers

For issuers structured through offshore holding companies in BVI, Cayman, or Bermuda, the contract duration review has direct implications for the VIE structure and the PRC operating entity’s revenue recognition.

VIE Agreements and the “36-Month” Requirement

The SFC’s 2025 enforcement circular specifically addresses VIE structures. The regulator requires that the VIE agreements between the offshore holding company and the PRC operating entity’s shareholders must have a remaining term of at least 36 months at the time of listing. This is because the VIE agreements are the legal mechanism through which the offshore entity consolidates the PRC entity’s revenue. If the VIE agreements are short-term, the entire revenue stream from the PRC operations is considered structurally unstable.

For an applicant where the top three customers are all PRC entities, the VIE agreements with those customers’ contracting entities must also be reviewed. In practice, this means the PRC operating entity must have contracts with its key customers that are coterminous with or longer than the VIE agreements. The HKEX has rejected at least two applications in 2025 where the VIE agreements had a 36-month term but the underlying customer contracts had only 12 months remaining.

Governing Law and Dispute Resolution Clauses

The HKEX has also focused on the governing law and dispute resolution clauses in key customer contracts. The Exchange prefers contracts governed by Hong Kong law or Singapore law, with arbitration in Hong Kong or Singapore. Contracts governed by PRC law with PRC court jurisdiction are viewed as less enforceable in the context of an offshore listing, particularly if the customer is a PRC SOE.

In a 2024 listing decision (LD44-2024), the Exchange required an applicant to amend its key customer contracts to include an arbitration clause under the Hong Kong International Arbitration Centre (HKIAC) rules, with the seat of arbitration in Hong Kong. The applicant’s original contracts were governed by PRC law with PRC court jurisdiction. The Exchange’s rationale was that in the event of a dispute post-listing, a Hong Kong arbitral award would be more readily enforceable against the customer than a PRC court judgment, particularly if the customer had assets outside the PRC.

Practical Mitigation Strategies for Applicants

Sponsors and legal counsel have developed several strategies to address the contract duration issue pre-IPO. These strategies are not guarantees of approval but have been accepted by the Exchange in recent cases.

Early Contract Renegotiation and Extension

The most straightforward mitigation is to renegotiate key customer contracts to extend their term to at least 24 months from the expected listing date. This requires the applicant to approach its top customers with a business case for the extension. In some cases, the applicant may need to offer pricing concessions or volume commitments to secure the extension.

A 2025 case involving a precision manufacturing applicant in the electronics sector saw the company extend its top three customer contracts from an average of 16 months to 30 months by offering a 5% price reduction on the next two years’ orders. The cost of this concession was approximately HKD 12 million in reduced revenue, but it enabled the applicant to proceed with its Main Board listing, which raised HKD 480 million.

Diversification of the Customer Base

If contract extensions are not feasible, the applicant may need to demonstrate that its customer base is diversifying. The HKEX has accepted applications where the top-three customer concentration ratio fell from >50% to <35% within the 12 months preceding the listing hearing, provided the new customers also had contracts with at least 12 months of remaining term.

This strategy requires the applicant to accelerate its sales efforts and secure new contracts before the listing. The Exchange will examine the new contracts carefully to ensure they are not “window-dressing” arrangements with related parties or shell entities. In a 2024 case, the Exchange rejected an applicant’s claim of diversification because the new customer was a subsidiary of an existing top customer, effectively maintaining the concentration.

Use of a “Backstop” Sponsor Undertaking

In certain cases, the Exchange has accepted a sponsor undertaking to monitor the renewal of key customer contracts post-listing. This is a rare concession, typically granted only where the applicant has a strong track record of renewal (e.g., >90% renewal rate over five years) and the remaining contract term is at least 18 months.

The sponsor must file a quarterly report with the Exchange for two years post-listing, confirming the status of each key customer contract. If any contract is not renewed, the sponsor must immediately notify the Exchange and the SFC. This undertaking creates significant liability for the sponsor, and most sponsors will only agree if the applicant provides a substantial indemnity.

Closing Takeaways

1. Contract duration is now a primary listing criterion: The HKEX’s internal benchmark of 24 months remaining term for the top three customers (Main Board) is a de facto rule, and applicants falling below this threshold should expect rejection or a requirement for binding extensions.
2. VIE structures face a higher bar: The SFC’s 2025 circular requires VIE agreements to have at least 36 months remaining, and the underlying customer contracts must be coterminous or longer, creating a cascading compliance requirement for cross-border issuers.
3. Governing law matters: Key customer contracts should be governed by Hong Kong or Singapore law with HKIAC arbitration clauses to satisfy the Exchange’s enforceability concerns, particularly for PRC-based customers.
4. Diversification is a viable alternative to extension: Reducing the top-three customer concentration ratio below 30% within 12 months of the listing hearing can mitigate the contract duration issue, but the new customers must have genuine, non-related-party contracts.
5. Sponsor undertakings are a last resort: While accepted in limited cases, a sponsor undertaking to monitor contract renewals post-listing carries significant liability and should only be pursued where the applicant has a demonstrable five-year renewal track record above 90%.