Summary The FSC’s final roadmap mandates climate disclosure under the KSSB standards, built on IFRS S1 and IFRS S2, as part of the statutory business report. Reporting starts with FY2027 information filed in 2028 (proposed), Scope 3 follows three years after each tier’s first report, and third-party assurance starts in 2030. Scope opens with KOSPI companies holding KRW 10 trillion or more in consolidated assets, widens to KRW 5 trillion in 2029, and reaches 3,171 companies including subsidiaries.