Third‑party Funding in Arbitration: What Indonesian Businesses and Counsel Must Know in 2026

Third-party funding arbitration Indonesia is no longer a fringe topic for international disputes specialists, it is a compliance issue that every in‑house counsel and arbitration practitioner in the country must confront. The 2026 updates to both the ICC Arbitration Rules and the AIAC Arbitration Rules have introduced mandatory disclosure obligations that directly affect how funded claims are managed, how arbitrators are appointed and how awards are enforced. Indonesia’s own arbitration statute, Law No. 30 of 1999, remains silent on the subject, creating a regulatory gap that amplifies risk for parties on both sides of a funded dispute.

This guide provides the step‑by‑step checklists, comparison tables, template clauses and enforcement risk analysis that practitioners need to navigate the current landscape with confidence.

• TL;DR for counsel: Indonesian law neither expressly permits nor prohibits third‑party funding in arbitration, but international institutional rules now require disclosure.
• Key action: Align internal protocols with ICC Rules 2026 and AIAC Rules 2026 disclosure provisions before filing or responding to a funded claim.
• Critical risk: Non‑disclosure can trigger arbitrator challenges, procedural objections and, ultimately, set‑aside or refusal of enforcement in Indonesian courts on public‑policy grounds.

Legal Landscape in Indonesia: Is Third‑Party Funding Allowed?

Indonesian statutory baseline, Law No. 30 of 1999

Law No. 30 of 1999 on Arbitration and Alternative Dispute Resolution is the primary statute governing arbitration in Indonesia. It establishes the enforceability of arbitration agreements, the appointment and challenge of arbitrators, and the grounds for annulment. Notably, neither Law No. 30/1999 nor any subsequent implementing regulation contains a provision that expressly addresses, or prohibits, third party funding Indonesia arrangements. Academic analysis from the University of Indonesia (UI) and Padjadjaran University (UNPAD) confirms that Indonesian positive law is silent on the permissibility, disclosure requirements and regulatory treatment of third‑party funding in arbitration.

The Gadjah Mada University (UGM) research repository has further highlighted this regulatory gap, noting that the absence of specific rules creates uncertainty around enforcement outcomes and proposed that a model regulation is needed.

Market practice and prevalence

Despite the statutory silence, third‑party funding is already a practical reality in disputes involving Indonesian parties. International funders regularly finance arbitration claims seated outside Indonesia, particularly in Singapore (SIAC), Kuala Lumpur (AIAC) and Hong Kong (HKIAC), where Indonesian respondents or claimants are involved. Domestic use remains less common but is growing, particularly in construction, energy and mining disputes where claim values justify funder interest. Commentary from Chambers Practice Guides and the ABNR/Chambers International Arbitration 2025 Indonesia chapter confirms that awareness among Indonesian corporates is rising and that the market expects further growth as rule clarity improves.

Hukumonline has noted the increasing relevance of third‑party funding as an international arbitration financing instrument for Indonesian stakeholders, reflecting a broader Asia‑Pacific trend towards acceptance and regulation.

The practical position, therefore, is that third party funding Indonesia arrangements are permissible unless a specific contractual, institutional or seat‑law restriction applies. Counsel should not assume illegality, but neither should they assume that courts or tribunals will treat undisclosed funding neutrally.

The 2026 International Rule Changes and What They Require

ICC Rules 2026, key disclosure provisions

The ICC Arbitration Rules 2026 strengthen the framework for arbitration funding disclosure by requiring parties to disclose the existence and identity of any third‑party funder at the outset of proceedings or promptly upon any change. The obligation applies to any non‑party that has an economic interest in the outcome of the arbitration or that has contributed funds for the pursuit or defence of the case. The ICC Secretariat and the arbitral tribunal may draw on this information when confirming arbitrators and assessing potential conflicts of interest. Failure to comply with the disclosure obligation can result in adverse procedural consequences, including the tribunal drawing negative inferences or ordering disclosure as a condition for proceeding.

AIAC Rules 2026, key disclosure provisions

The AIAC Arbitration Rules 2026 take a broadly similar approach, requiring prompt disclosure of any third‑party funding arrangement, including the identity of the funder. For arbitrations seated in Kuala Lumpur, a common seat for disputes involving Indonesian parties, the AIAC Rules 2026 now operate alongside Malaysia’s broader regulatory framework for funded claims. The practical effect for Indonesian counsel is that any AIAC‑seated arbitration involving a funded party will require formal disclosure early in the proceedings, and the tribunal has express authority to order further details about the funding arrangement where relevant to conflicts or costs.

How seat vs. institutional rules interact, a practical decision tree

When advising Indonesian clients, counsel should map three layers: (1) the institutional rules chosen by the parties (ICC, AIAC, SIAC, BANI, etc.); (2) the law of the seat of arbitration; and (3) the law of the likely place of enforcement, which, for Indonesian respondents, is almost always Indonesia. Where these layers impose different disclosure standards, the most demanding standard should be adopted as the baseline.

Disclosure Obligations: Who Must Disclose What, When and to Whom

Party funding disclosure, obligations, timing and confidentiality

Under both the ICC Rules 2026 and AIAC Rules 2026, the funded party bears the primary obligation to disclose the existence of a funding arrangement. Disclosure must be made at the earliest available opportunity, typically in the Request for Arbitration or Answer, and updated promptly if circumstances change. The disclosure need not reveal the financial terms of the funding agreement, but it must identify the funder and describe the nature of the funder’s interest in the outcome. Counsel should coordinate with the funder before filing to agree on the scope of information that can be shared without breaching confidentiality provisions in the funding agreement.

A practical approach is to prepare a redacted summary of the funding arrangement, disclosing the funder’s identity and confirming that the funder has no control over the conduct of the arbitration, while withholding commercially sensitive terms (funding amount, return structure, termination triggers). This balances the tribunal’s need for conflict‑checking information against the funder’s legitimate confidentiality expectations.

Arbitrator disclosure and funding disclosure arbitrator impartiality

Arbitrators have an independent duty to disclose any circumstances that could give rise to justifiable doubts about their impartiality or independence. Under the 2026 rules, this expressly extends to relationships with identified funders. An arbitrator who has previously advised, represented or held a financial interest in the funder, or in an entity within the funder’s corporate group, must disclose that relationship. Counsel appointing arbitrators should proactively ask candidates whether they have any connection to the funder, using the funder’s identity disclosed under the party’s obligation.

Arbitrator Impartiality and Challenges: What Triggers a Successful Challenge?

Standard of impartiality under Indonesian practice and international norms

Law No. 30/1999 requires arbitrators to be impartial and independent. The IBA Guidelines on Conflicts of Interest in International Arbitration, widely referenced in Indonesian practice and by BANI, categorise relationships between arbitrators and parties (including funders) using a traffic‑light system. A direct financial interest in the outcome, or a current professional relationship with the funder, falls within the non‑waivable Red List, meaning the arbitrator must decline the appointment. Indirect connections, such as a prior engagement concluded more than three years before appointment, typically fall within the Orange List and are waivable if disclosed and not objected to within a prescribed period.

Funding‑related challenges, evidence, timing and forum

A challenge grounded in the arbitrator’s undisclosed relationship with a funder must be brought promptly. Under both ICC and AIAC Rules 2026, challenges are first decided by the institution (the ICC Court or the AIAC Director); if the challenge fails, the unsuccessful party may seek set‑aside before the courts of the seat. For arbitrations seated in Indonesia, the Central Jakarta District Court hears annulment applications under Article 70 of Law No. 30/1999. Industry observers expect that Indonesian courts, while not yet tested on funding‑specific impartiality challenges, would treat non‑disclosure of a material funder relationship as a procedural defect capable of supporting an annulment application, particularly if the non‑disclosure is shown to have affected the outcome.

Counsel opposing a funded claim should, therefore, serve early discovery requests regarding the funder’s identity and any connections to tribunal members. This creates a contemporaneous record that strengthens any subsequent challenge or enforcement objection.

Enforcement and Set‑Aside Risk for Funded Awards in Indonesia

Grounds Indonesian courts use to refuse enforcement

Indonesia is a signatory to the New York Convention (1958), and enforcement of foreign arbitral awards is governed by Law No. 30/1999 and Supreme Court regulations. The grounds for refusal largely mirror Article V of the New York Convention: incapacity of a party, invalidity of the arbitration agreement, denial of due process, excess of jurisdiction, improper tribunal composition and public policy. The enforceability of funded awards in Indonesia has not yet been squarely tested, but two potential objection vectors exist.

• Public policy. A respondent might argue that an award procured through an undisclosed funding arrangement, particularly where the funder influenced the conduct of the case, offends Indonesian public policy. This argument is strongest where non‑disclosure can be linked to a specific procedural unfairness.
• Tribunal composition / due process. If an arbitrator’s undisclosed relationship with a funder is discovered post‑award, the respondent may argue that the tribunal was improperly constituted or that the respondent was denied the opportunity to raise a legitimate challenge.

Practical mitigation steps for counsel

The following enforcement risk matrix summarises the key risk categories, their likelihood, potential impact and recommended mitigation measures for third-party funding arbitration Indonesia scenarios.

Practical Checklist for Counsel and Corporates When a Claim Is Funded

Arbitration counsel due diligence should follow a structured protocol. The checklists below cover the three critical phases: pre‑funding due diligence, drafting and arbitration management.

Due diligence checklist

1. Verify the funder’s identity, corporate structure and regulatory status in its home jurisdiction.
2. Assess the funder’s financial capacity, request audited accounts or evidence of committed capital.
3. Review the funding agreement for clauses that grant the funder control over settlement, strategy or counsel selection.
4. Confirm that the funding agreement includes express confidentiality protections and carve‑outs for mandatory disclosure.
5. Map all potential conflicts of interest between the funder (and its affiliates) and proposed arbitrators, counsel and experts.
6. Evaluate the funder’s track record in comparable disputes and jurisdictions.

Drafting checklist

1. Include a funding disclosure clause in the arbitration agreement or Terms of Reference, see template below.
2. Draft a non‑interference clause in the funding agreement confirming that counsel retains sole control over case strategy.
3. Prepare a limited waiver or consent letter authorising the funded party to disclose the funder’s identity to the tribunal.
4. Address cost‑allocation and adverse‑cost exposure in the funding agreement, specify whether the funder covers adverse costs orders.
5. Include a termination protocol in the funding agreement that addresses mid‑arbitration withdrawal by the funder.

Arbitration management checklist

1. File disclosure of the funding arrangement with the first substantive submission (Request for Arbitration or Answer).
2. Update the tribunal promptly if the funder changes, the funding is terminated or the funding terms are materially amended.
3. Ensure all pleadings, witness statements and expert reports are signed by counsel, not by the funder’s representatives.
4. Maintain a clear separation between funder communications and privileged counsel communications.
5. Prepare a pre‑emptive response to any security‑for‑costs application, including evidence of the funder’s commitment.

Templates and Drafting Suggestions for Third‑Party Funding Arbitration Indonesia

Model funding disclosure paragraph

For inclusion in a Statement of Claim or Notice of Arbitration:

“The Claimant hereby discloses, in accordance with [Article X of the ICC Arbitration Rules 2026 / Rule Y of the AIAC Arbitration Rules 2026], that it has entered into a funding arrangement with [Funder Name], a [jurisdiction] entity. [Funder Name] has a financial interest in the outcome of this arbitration. The Claimant confirms that [Funder Name] does not exercise control over the Claimant’s legal strategy or the conduct of these proceedings. The Claimant reserves the right to supplement this disclosure as required.”

Model funding clause for arbitration agreements

Short form, for inclusion in the arbitration clause at contract stage:

“Each party undertakes to disclose to the other party and to the arbitral tribunal the existence and identity of any third‑party funder with an economic interest in the outcome of any arbitration commenced under this clause, promptly upon entering into such a funding arrangement and in any event no later than the filing of its first substantive submission.”

Model limited waiver / consent language

For inclusion in the funding agreement between the funded party and the funder:

“The Funder consents to the Funded Party disclosing the Funder’s identity and the existence of this Agreement to the arbitral tribunal, the opposing party and the administering institution, to the extent required by applicable arbitration rules, the law of the seat or order of the tribunal. This consent does not extend to disclosure of the financial terms of this Agreement unless ordered by the tribunal.”

Quick Enforcement Playbook: What to Do After a Funded Award

For the winning party and funder seeking swift recognition and enforcement of a funded award in Indonesia, the following steps are recommended:

1. Compile the disclosure record. Gather all filings, tribunal orders and correspondence demonstrating that the funding arrangement was disclosed in compliance with the applicable arbitration rules. This record is the primary defence against any public‑policy objection.
2. Register the award promptly. For international awards, file the registration application with the Central Jakarta District Court within the prescribed timeframe. Attach certified copies of the award, the arbitration agreement and evidence of disclosure compliance.
3. Prepare for opposition. Anticipate that a respondent may raise funding‑related objections. Pre‑draft responses addressing public policy, tribunal composition and procedural fairness, referencing the contemporaneous disclosure record.
4. Coordinate with the funder. Confirm the funder’s support for enforcement proceedings, including willingness to fund any necessary court applications and to cooperate in producing evidence of compliance.

For a party opposing enforcement of a funded award, the key is to identify and document any non‑disclosure or procedural irregularity as early as possible, ideally during the arbitration itself, to preserve grounds for challenge at the enforcement stage.

Conclusion and Recommended Next Steps

Third-party funding arbitration Indonesia is a rapidly evolving area where the gap between international best practice and domestic statutory clarity creates both opportunity and risk. The ICC Rules 2026 and AIAC Rules 2026 now impose clear disclosure obligations that Indonesian counsel cannot afford to ignore, regardless of whether the arbitration is seated domestically or abroad. Early indications suggest that Indonesian courts, while yet to rule directly on funding‑related enforcement challenges, are likely to treat non‑disclosure as a material procedural defect capable of supporting set‑aside or refusal of enforcement.

• Action 1: Audit your existing arbitration agreements and standard clause libraries to incorporate funding disclosure obligations.
• Action 2: Establish an internal due‑diligence protocol for evaluating third‑party funders before entering into a funding arrangement.
• Action 3: Consult experienced arbitration counsel, accessible through the Global Law Experts lawyer directory, to assess enforcement risk and tailor disclosure strategies to your specific disputes.

Sources

1. Hukumonline, Third‑Party Funding article
2. UI ScholarHub, Pendanaan Pihak Ketiga (JHP)
3. UNPAD Journal, Model Regulation of Third‑Party Funding
4. UGM Repository, Regulating Third‑Party Funding in Indonesia
5. Chambers Practice Guides, Litigation 2026: Indonesia
6. Norton Rose Fulbright, Developments in Third Party Funding in Arbitration
7. Lexology, In Review: Third Party Litigation Funding in Indonesia
8. ABNR/Chambers, International Arbitration 2025: Indonesia