South Korea Corporate income tax (법인세) top rate
South Korea Corporate income tax (법인세) top rate is 25 percent, in force since 1 Jan 2026. It was 24 percent before that. Last checked against the official source on 20 Jul 2026.
Top marginal national corporate income tax rate under Article 55 of the Corporate Tax Act; Korea applies a four-bracket progressive schedule plus a 10% local income tax surcharge.
| Current value | 25 percent (top marginal bracket, national CIT only) |
|---|---|
| In force from | 2026-01-01 |
| Official source | 법인세법 (Corporate Tax Act) Article 55, as amended by Act No. 21217 (promulgated 2025-12-23, in force 2026-01-01; applies to fiscal years beginning on or after 2026-01-01); rates confirmed on National Tax Service page '법인세 세율 (2026년 이후)' |
| Last verified | 2026-07-20 |
| Verification | primary — No verification limitation recorded — read from the official source cited. |
| Provenance | source fingerprint |
What this value means
Full 2026 schedule (tax base per fiscal year): up to KRW 200m — 10%; over 200m to 20bn — 20%; over 20bn to 300bn — 22%; over 300bn — 25%. The December 2025 reform (passed by the National Assembly 2025-12-02 as a budget-accompanying bill, promulgated 2025-12-23 as Act No. 21217) raised every bracket by 1pp from the 2023-2025 schedule (9/19/21/24%), reversing the 2022 cut. Local income tax (지방소득세) equal to 10% of the CIT rates applies on top, giving a combined top rate of 27.5% (EY Global Tax Alert 'Korea enacts 2026 tax reform bill', 2026-01-26, cross-check). Special co-operative corporations (조합법인) pay 9%/15% under Restriction of Special Taxation Act Art. 72. Amendment number/dates verified on the law.go.kr static revision-history popup (lsRvsDocListP.do, lsId=001563 — loaded); law.go.kr article pages themselves are JS shells to plain fetchers.
Earlier values
| From | Value | Source |
|---|---|---|
| 2023-01-01 | 24 | — |
| 2018-01-01 | 25 | — |
Get it programmatically
curl https://asiaref.dev/v1/kr/corporate-tax
# $0.005 per call — x402 on Base (USDC). No key, no signup.
# History: curl https://asiaref.dev/v1/kr/corporate-tax/history?from=2020-01-01
# Provenance: curl https://asiaref.dev/provenance/kr/corporate-taxOther South Korea series: Bank of Korea Base Rate · Statutory interest (법정이율) · Value-Added Tax (부가가치세) standard rate · VAT registration threshold · National minimum wage (최저임금) · Public holidays · Consumer price inflation (소비자물가 상승률) · Withholding tax rates · Personal income tax (종합소득세) schedule · Statutory social-insurance contributions
The same figure elsewhere: Sri Lanka · Taiwan · Thailand · Türkiye · United Arab Emirates · all 28