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Socious VerifyKorea's Final ESG Roadmap Covers 3,171 Companies, Not a Handful
On 8 July 2026 Korea’s Financial Services Commission published its final ESG disclosure roadmap, under the title ESG Disclosure to be Required from 2028 for KOSPI-listed Companies with KRW10 Trillion or More in Total Consolidated Assets (FSC).
The draft said KRW 30 trillion. The FSC presented that version on 25 February 2026, phasing in KRW 30 trillion in 2028 and KRW 10 trillion in 2029 (Seoul Economic Daily). Four and a half months later the first tier moved down by two thirds and the second tier by half.
What the numbers became
Reporting begins in 2028 on fiscal year 2027 data, for KOSPI-listed companies with consolidated assets of KRW 10 trillion or more. In 2029 the threshold drops to KRW 5 trillion. From 2030 the FSC will consider KRW 2 trillion, after reviewing how the first two years went.
The FSC counts 291 companies in 2028 and 3,171 in 2029, including affiliates (FSC). The February draft would have caught a much smaller group of the largest chaebol holdings. The final version reaches most of the listed market.
The requirement lands on KOSPI-listed companies. A wholly-owned Korean subsidiary of a foreign group is not itself an issuer, so it is not directly caught. Two routes still reach a foreign parent. A partly-listed Korean affiliate crosses KRW 5 trillion far more easily than it crossed KRW 30 trillion. And 3,171 Korean issuers reporting from 2029 will eventually need value-chain data from the companies they buy from, though Scope 3 is deferred to 2031 at the earliest, so those requests arrive later than the first reports do.
What was pushed out
Scope 3 is deferred three years for every tier (FSC):
| Consolidated assets | Scope 3 disclosure begins |
|---|---|
| above KRW 10 trillion | 2031 |
| above KRW 5 trillion | 2032 |
| above KRW 2 trillion | 2033 |
Small businesses that are not high-carbon emitters are exempted.
Third-party assurance is required, and it starts in 2030 — two years after the first disclosures land. Companies get a three-year exemption from penalties, with intentional greenwashing carved out of that protection (FSC).
The first Korean sustainability reports will be published unassured. From 2030 the assurance applies to data collected in 2027 and 2028. Any Korean filer that treats the first two reporting cycles as a dry run will be assured on figures it never built controls around.
It is a statutory filing, not a sustainability report
The disclosures go into the corporate business report required under the Financial Investment Services and Capital Markets Act, from 2028 on FY2027 data. Companies may also file voluntarily with the Korea Exchange (FSC).
A business report under the FSCMA is a securities filing. Misstatement liability attaches to it, and the internal sign-off runs at the same level as financial reporting. In most Korean subsidiaries that moves the numbers out of the CSR team and into finance.
The standard behind it
The Korea Sustainability Standards Board published its exposure draft on 2 May 2024 (ISS-Corporate) and the approved Korean Sustainability Disclosure Standards on 26 February 2026, a day after the FSC’s draft roadmap.
- KSDS 1 — general requirements for sustainability-related financial disclosure
- KSDS 2 — climate
A proposed third standard, KSDS 101, containing Korea-specific voluntary content, was dropped from the final set.
The standards broadly align with the IFRS Foundation’s ISSB standards (ESG Today). A company already producing ISSB-aligned figures is collecting most of what KSDS asks for.
Three regimes, one fiscal year
Japan’s SSBJ standards were finalised on 5 March 2025. The EU’s CSRD dates settled with the Omnibus revision in Directive (EU) 2026/470. Set the three side by side.
| Regime | Fiscal year | Who it catches |
|---|---|---|
| Japan SSBJ | FYE March 2027 | Prime-listed above ¥3 trillion market cap; ¥1 trillion for 2028, ¥500 billion for 2029 |
| EU CSRD | FY2027, first reports 2028 | above 1,000 employees and €450 million turnover |
| Korea KSDS | FY2027, reported 2028 | KOSPI-listed above KRW 10 trillion consolidated assets |
All three regimes land on the same fiscal year. Take a Japanese manufacturer with a European sales entity and a Korean production subsidiary. It measures its emissions once. Each regime then asks for that measurement on its own boundary, against its own filing calendar. In Korea the destination is a securities filing.
The three tests measure different things
The three regimes do not screen on the same quantity.
| Regime | What the threshold measures |
|---|---|
| Korea KSDS | consolidated assets |
| Japan SSBJ | market capitalisation of Prime-listed issuers |
| EU CSRD | employee headcount and turnover |
An asset-heavy manufacturer or a financial group clears an asset test at a size where it may sit well below a €450 million turnover gate. A services company with a high multiple can clear Japan’s market-capitalisation tier while holding assets that would leave it outside Korea’s. None of the three is a proxy for the others, which is why scoping has to be done separately for each and why a group-level answer to “are we in scope” tends to be wrong somewhere.
Korea’s own review of the KRW 2 trillion threshold in 2030 is the one still open. The FSC has said it will look at how 2028 and 2029 went before deciding.
What to do before FY2027 closes
Decide where each number lives and who owns it. The measurement boundary has to be settled at the same time, because that is the thing the three regimes disagree about. After that, one dataset maps out to whichever framework asks for it. Doing the work again for every standard costs more and produces figures that do not reconcile.
Korean subsidiaries are the piece most groups have not scoped yet, because until July the threshold looked like someone else’s problem. Check the consolidated asset figure against KRW 5 trillion, not KRW 10 trillion, since the second tier arrives twelve months after the first.
Socious Report takes one dataset into AI-drafted CSRD, SSBJ and ISSB reports, then adds an independent Socious Verify credential on top of the output. If you want to see where your own reporting sits before FY2027 closes, start with the free SSBJ readiness check.