Scope
TSE Prime companies by market cap: ≥¥3tn (2027), ≥¥1tn (2028), ≥¥500bn (2029); assurance one year after each cohort
Japan · standard
SSBJ Standards + FIEA mandatory amendment
SSBJ Standards (5 Mar 2025) + Financial Instruments and Exchange Act amendment (enacted Jul 2026)
Phasing inApplies 2027-04-01
Penalties
FIEA filing enforcement; assurance requirement follows each cohort
Last verified
2026-08-22
In plain language
What this law does
Japan's ISSB-aligned mandatory regime, enacted July 2026: sustainability disclosures filed inside the annual securities report with Inline XBRL via EDINET, Scope 1/2 mandatory, Scope 3 where material, and a safe-harbour concept for Scope 3 misstatements.
Core obligations
Governance + risk management (mandatory); strategy + metrics/targets (material); Scope 1+2 mandatory; Scope 3 where material (15-category split); transition-plan content; EDINET Inline XBRL filing
Dictionary
Terms defined in this law
- New **"Sustainability Information"** section in the Annual Securities Report (有価証券報告書): **Governance, Risk Management** mandatory for all in-scope; **Strategy and Metrics & Targets** required **where material** (重要性が高い場合).FIEA amendment (Cabinet Order, in force 15 Jul 2026)
- External assurance **voluntary initiallyFIEA amendment (Cabinet Order, in force 15 Jul 2026)
- Universal Sustainability Disclosure Standards — ApplicationSSBJ Standards (issued 5 Mar 2025)
- Four categories of SSBJ standardsSSBJ Standards (issued 5 Mar 2025)
- Schedule of DifferencesSSBJ Standards (issued 5 Mar 2025)
- Scope 3SSBJ Standards (issued 5 Mar 2025)
- Phase 1FIEA amendment (Cabinet Order, in force 15 Jul 2026)
- Scope 1/2 mandatoryFIEA amendment (Cabinet Order, in force 15 Jul 2026)
Claims
Claims connected to this source
Reviewed claim links will appear here.