Last updated: May 25, 2026. Sustainability reporting in Indonesia is already mandatory for financial services institutions, issuers, and public companies under OJK Regulation No. 51/POJK.03/2017. The reporting landscape is also changing: Indonesia has issued national Sustainability Disclosure Standards, known as SPK, based on IFRS S1 and IFRS S2. Those standards are effective from January 1, 2027, while OJK is consulting on changes to POJK 51 to align the regulatory regime with PSPK 1 and PSPK 2.
Short answer: Indonesia sustainability reporting is mandatory for entities covered by POJK 51, including financial services institutions, issuers, and public companies. These entities must prepare a sustainability report, either as a standalone report or as part of the annual report, and publish it annually. If the report is separate from the annual report, POJK 51 sets a 30 April deadline in the following year. Companies should also prepare for SPK/PSPK adoption from 2027, especially climate-related disclosure, investor-grade governance, risk management, metrics, targets, and greenhouse gas data.
Who must prepare a sustainability report in Indonesia?
The current core rule is OJK Regulation No. 51/POJK.03/2017 on sustainable finance. OJK describes it as an overarching rule for sustainable finance in Indonesia. It applies to financial services institutions, issuers, and public companies.
In practical terms, the first applicability question is whether the entity is:
- a financial services institution supervised by OJK;
- an issuer, meaning a party that conducts a public offering;
- a public company under Indonesian capital markets rules; or
- otherwise required by a customer, investor, lender, parent company, or supply-chain program to provide sustainability or emissions data.
Private companies outside POJK 51 may still publish sustainability reports voluntarily, especially in natural resources, manufacturing, infrastructure, finance-linked supply chains, or export-oriented sectors. But the mandatory OJK sustainability report obligation should be checked against POJK 51 first.
What POJK 51 requires today
POJK 51 requires covered entities to implement sustainable finance principles and prepare a sustainability report. The report can be published separately or as part of the annual report. It must be submitted to OJK annually. If the sustainability report is separate from the annual report, it must be submitted by 30 April of the following year, and the public version must also be made available by that date.
The sustainability report format is set out in Annex II to POJK 51. At a minimum, the report should cover:
- sustainability strategy;
- a summary of economic, social, and environmental sustainability performance;
- a brief company profile;
- a directors' explanation;
- sustainability governance;
- sustainability performance;
- written independent verification, if any;
- a reader feedback form, if any; and
- responses to feedback received on the prior-year report.
For many companies, the operational work is less about writing and more about collecting reliable data. POJK 51 reporting can require three-year performance comparisons, energy information, emission reduction information where the business directly relates to the environment, waste and effluent information, biodiversity information for relevant operations, and sustainable product or service information.
What data should companies collect?
Companies preparing an Indonesia sustainability report should usually start with a data request across finance, operations, HR, legal, EHS, investor relations, and sustainability. Useful inputs include:
- production, services sold, revenue, profit or loss, and sustainable product or service information;
- employee data by gender, position, age, education, and employment status;
- energy use, energy intensity, efficiency actions, and renewable energy use;
- greenhouse gas emissions, emission intensity, and emission reduction measures where applicable;
- waste and effluent volumes, treatment methods, and spills where applicable;
- biodiversity risks and conservation actions for relevant sites;
- sustainable finance products, sustainable lending or investment exposure, if relevant;
- stakeholder engagement records and material issues; and
- governance, risk management, and board or management oversight evidence.
The 2027 shift: SPK, PSPK 1, and PSPK 2
Indonesia's sustainability reporting regime is moving toward a more investor-oriented disclosure model. The Indonesian Sustainability Standards Board of the Institute of Indonesia Chartered Accountants issued national Sustainability Disclosure Standards, or SPK, consisting of PSPK 1 and PSPK 2. IAI says these standards are effective from January 1, 2027.
PSPK 1 covers general requirements for sustainability-related financial disclosures and is aligned with IFRS S1. PSPK 2 covers climate-related disclosures and is aligned with IFRS S2. This moves Indonesia closer to the global ISSB baseline and changes the emphasis from broad sustainability narrative toward decision-useful information on sustainability-related risks and opportunities.
OJK is also revising POJK 51. In February 2026, OJK announced public consultation on draft amendments to POJK 51 and related implementation rules. OJK said the changes are intended to align sustainable finance reporting and disclosure with PSPK 1 and PSPK 2, strengthen governance, risk management, strategy, metrics, and targets, and set implementation stages and supervision arrangements.
Because that regulatory process is still important, companies should avoid assuming every final implementation detail until OJK finalizes the amended rule. The safe preparation approach is to keep meeting POJK 51 requirements now and begin a gap assessment against PSPK 1 and PSPK 2 for 2027 readiness.
How SPK differs from POJK 51
POJK 51 reporting is often prepared as a sustainability report covering economic, social, and environmental performance. SPK/PSPK reporting is expected to be more closely connected to financial reporting, enterprise value, climate-related risks and opportunities, governance, strategy, risk management, metrics, and targets.
That means in-scope companies should prepare for:
- clear governance over sustainability-related financial disclosures;
- climate-risk and opportunity assessment;
- risk management processes that connect sustainability issues to business risk;
- Scope 1 and Scope 2 greenhouse gas inventory capability;
- Scope 3 screening and readiness, even where transition relief applies;
- climate metrics, targets, and progress tracking;
- better evidence trails and internal controls; and
- alignment between sustainability, finance, legal, risk, and investor relations teams.
Common mistakes in Indonesia sustainability reporting
The most common mistake is treating the sustainability report as a design or communications exercise. The report needs a defensible data backbone, particularly where it includes energy, emissions, waste, employee, stakeholder, or sustainable finance metrics.
A second mistake is assuming that GRI or another voluntary framework automatically satisfies Indonesian requirements. International frameworks can be useful, but the company should first map the report to POJK 51 and, from 2027 planning onward, to PSPK 1 and PSPK 2 where applicable.
A third mistake is waiting until the report deadline before collecting data. The 30 April deadline is not generous if the company still needs to reconcile data across subsidiaries, sites, business units, and departments.
Preparation checklist
For the next reporting cycle, Indonesian companies should:
- confirm whether POJK 51 applies to the entity;
- decide whether the sustainability report will be standalone or included in the annual report;
- map POJK 51 Annex II requirements to current report sections;
- assign data owners for economic, social, environmental, governance, and sustainable finance indicators;
- calculate energy use, emissions, waste, and other environmental data where relevant;
- document assumptions, methodologies, boundaries, and exclusions;
- review whether independent verification is useful or expected by stakeholders;
- perform an SPK/PSPK 1 and PSPK 2 readiness gap assessment for 2027;
- prepare governance and climate-risk processes before the first SPK-aligned report; and
- monitor OJK's final amendments to POJK 51 and related implementation rules.
How Keslio can help
Keslio helps companies turn Indonesia sustainability reporting requirements into a practical reporting workplan, data request, and finished disclosure. Depending on the trigger, we can support:
- POJK 51 applicability and report-structure checks;
- POJK 51 Annex II gap assessments;
- SPK/PSPK 1 and PSPK 2 readiness reviews;
- GHG emissions calculations for Scope 1, Scope 2, and relevant Scope 3 categories;
- data request checklists and evidence trackers;
- sustainability reporting and communications for annual or standalone sustainability reports; and
- supplier request support where the reporting trigger comes from a customer or buyer rather than OJK.
This guide is not legal advice. If your company is close to a regulatory threshold, preparing a formal OJK submission, or interpreting final regulatory text, legal counsel should confirm the legal obligation while Keslio supports the sustainability data and reporting workstream.
Sources and further reading
- OJK sustainable finance regulation page for POJK 51/POJK.03/2017
- POJK 51/POJK.03/2017 official PDF
- POJK 51 Annex II sustainability report format
- IAI announcement on Indonesia's SPK based on IFRS S1 and IFRS S2
- IAI SPK effective date announcement
- OJK public consultation on POJK 51 amendments, February 2026
- IFRS Foundation jurisdictional snapshot for Indonesia
