How to Buy Carbon Credits from Indonesia: Registry, Due Diligence and Settlement

Indonesia holds some of the largest nature-based carbon stocks on Earth: tropical peatlands, mangrove coastlines and rainforest corridors that together make the country one of the top sources of voluntary carbon credits globally. Yet for a foreign buyer, the question is no longer whether Indonesian carbon credits exist but how to purchase them through the right channel, verify what you are buying and retire the credit so it actually counts toward your climate commitment.

This guide covers the regulatory framework as of 2026, the national registry that every transaction must pass through, the due diligence steps that separate a defensible purchase from a reputational liability, and the mechanics of settlement and retirement.

Indonesia Carbon Credits: The Regulatory Framework

Indonesia regulates the economic value of carbon under Presidential Regulation No. 98/2021 (Perpres 98/2021), which established the concept of Nilai Ekonomi Karbon (NEK) and set the rules for carbon trading, result-based payments and carbon levies. The implementing rules were detailed in Ministry of Environment and Forestry (KLHK) Regulation No. 21/2022, which defines project registration, validation, verification and credit issuance procedures.

Two structural points matter for foreign buyers:

• Sovereign approval requirement. All carbon credit transactions involving Indonesian emission reductions must be recorded in the national registry. Credits that bypass this system cannot receive a corresponding adjustment under Article 6 of the Paris Agreement, which means the buyer risks double counting against Indonesia’s Nationally Determined Contribution (NDC).
• Domestic retention quota. Indonesia reserves a share of issued credits for its own NDC compliance. The exact percentage varies by sector and project type. Buyers should confirm the exportable allocation before signing any purchase agreement.

The National Registry: SRN and How It Works

The Sistem Registri Nasional (SRN), operated by KLHK, is the single authoritative ledger for carbon units in Indonesia. Since its operational expansion in 2024, the SRN records project registration, credit issuance, ownership transfers and retirement. A complementary trading infrastructure exists through the Indonesia Carbon Exchange (IDXCarbon), launched on the Indonesia Stock Exchange (IDX), and the Indonesia Commodity and Derivatives Exchange (ICDX).

For a foreign buyer, the practical workflow is:

1. The project developer registers the project and its methodology in the SRN.
2. An accredited validation and verification body (VVB) audits the project.
3. KLHK issues carbon credits (Sertifikat Pengurangan Emisi, or SPE) into the registry.
4. The developer or an intermediary lists credits for sale, either bilaterally or through IDXCarbon/ICDX.
5. Upon sale to a foreign entity, the SRN records the transfer and, if the buyer requires a corresponding adjustment for Article 6 compliance, the government processes the authorization.

Foreign buyers do not need to open an SRN account directly in every case. Most transactions are intermediated by a local project developer, broker or exchange member. However, the buyer must confirm that every credit appears in the SRN before settlement.

Who This Applies To

This process is relevant to:

• Corporates purchasing credits to meet voluntary net-zero or carbon-neutrality targets.
• Compliance buyers in jurisdictions that accept international credits (for example, under CORSIA for airlines).
• Sovereign or multilateral buyers negotiating Article 6 result-based agreements with Indonesia.
• Traders and intermediaries building portfolios of nature-based credits from Southeast Asia.

Due Diligence: What to Verify Before You Buy

Indonesian carbon projects span REDD+, peatland rewetting, mangrove restoration, cookstove distribution and renewable energy. Each carries different risk profiles. A defensible purchase requires checking at least the following:

1. Registry status

Confirm the project is registered in the SRN with a valid project ID. Cross-reference with any international registry (Verra VCS, Gold Standard) if the project holds dual registration. Note that Indonesia has increasingly required SRN registration as the primary record, so a credit listed only on an international registry without SRN linkage may not be transferable.

2. Methodology and additionality

Identify the methodology applied. For REDD+ projects, check whether the baseline uses a jurisdictional or project-level reference. Following Verra’s consolidation of REDD+ methodologies under its updated jurisdictional approach, projects using older standalone baselines face scrutiny. Confirm which methodology version was applied and whether the crediting period remains valid.

3. Verification and vintage

Request the most recent verification report and confirm the VVB is accredited by the relevant standard. Check the vintage year of the credits: older vintages may trade at a discount and may face buyer restrictions under frameworks such as the Science Based Targets initiative (SBTi), which limits the use of aged credits.

4. NDC allocation and corresponding adjustment

If you need the credit to count outside Indonesia’s NDC (for CORSIA, a voluntary claim in a regulated market, or an Article 6 transfer), request written confirmation that the Government of Indonesia will authorize a corresponding adjustment. Without this, the emission reduction remains within Indonesia’s national accounting and the buyer cannot claim it without double-counting risk.

5. Safeguards and co-benefits

Review the project’s social and environmental safeguards documentation. Indonesian REDD+ projects operate in areas with indigenous and local community land tenure considerations. Verify that Free, Prior and Informed Consent (FPIC) was obtained and that benefit-sharing arrangements are documented.

6. Legal title and encumbrances

Confirm that the seller holds clear title to the credits in the SRN and that no prior pledge, lien or forward-sale commitment encumbers them. Request a registry extract showing current ownership.

Settlement and Retirement

Settlement follows one of two paths depending on the transaction channel:

Exchange-based settlement. Purchases made through IDXCarbon or ICDX settle through the exchange’s clearing mechanism. The credit is transferred in the SRN upon payment confirmation. The exchange provides a transaction receipt linked to the registry serial number.

Bilateral (over-the-counter) settlement. The buyer and seller execute a purchase agreement (an Emission Reduction Purchase Agreement, or ERPA). Upon payment, the seller initiates a transfer in the SRN. The buyer should require delivery-versus-payment terms or use an escrow arrangement to mitigate counterparty risk.

To retire a credit, the holder submits a retirement request in the SRN specifying the purpose (voluntary offsetting, CORSIA compliance, Article 6 transfer). The registry marks the credit as retired with a unique retirement ID. This ID is the buyer’s proof of claim. For Article 6 transactions, retirement is coordinated with the corresponding adjustment process through Indonesia’s designated national authority.

Common Mistakes

• Buying off-registry credits. Credits offered outside the SRN may be legacy units that predate the registry requirement or fraudulent. If it is not in the SRN, it is not a valid Indonesian carbon credit under current regulation.
• Assuming automatic corresponding adjustment. A corresponding adjustment is not automatic. It requires government authorization, which involves a separate application process. Build this timeline (which can take months) into your procurement schedule.
• Ignoring the domestic retention share. Not all issued credits are available for international sale. Attempting to purchase credits earmarked for Indonesia’s NDC compliance will result in a blocked transfer.
• Skipping community safeguard review. Projects with unresolved land-tenure disputes or absent FPIC documentation carry legal and reputational risk that no discount justifies.
• Relying solely on international registry status. A Verra or Gold Standard label does not substitute for SRN registration. Dual-registered projects must satisfy both systems, and discrepancies between them can delay settlement.

What to Do Now

1. Identify your compliance need. Determine whether you require a corresponding adjustment (Article 6, CORSIA) or are purchasing for voluntary claims only. This decision shapes every subsequent step.
2. Engage a local intermediary. Work with a broker or project developer licensed to operate on IDXCarbon or ICDX, or with direct SRN access. Verify their credentials with the exchange or KLHK.
3. Request an SRN registry extract for any credits offered to you. Confirm project ID, vintage, methodology, and that the credits are unencumbered and within the exportable allocation.
4. Build corresponding-adjustment timelines into your ERPA. If you need Article 6 authorization, include it as a condition precedent to final payment.
5. Retire promptly. Once credits are delivered, submit the retirement request in the SRN with the correct purpose code. Retain the retirement ID as your auditable proof of claim.

The official text of Presidential Regulation No. 98/2021 and KLHK Regulation No. 21/2022 should be consulted directly for the current rules on credit allocation percentages, sector-specific requirements and the corresponding-adjustment application process, as these provisions are subject to periodic revision.