South Korea corporate tax rate
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 |
|---|---|---|
| 2018-01-01 | 25 | — |
| 2023-01-01 | 24 | — |
Get it programmatically
curl https://asiaref.dev/v1/kr/corporate-tax
# $0.001 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: policy interest rate · VAT rate · minimum wage · public holidays · inflation rate (CPI) · income tax rates