Act Partially Amending the Income Tax Act and Related Laws (Amending the Act on Special Measures Concerning Taxation)

AI summary

Generated by AI from the Japanese source metadata. It is an unofficial monitoring aid, not legal advice, and may contain errors. The area, stage, and impact labels are preliminary keyword-based triage labels. Confirm every point in the original Japanese source.

Summary

This item concerns an act partially amending the Income Tax Act and related laws (Reiwa 8 Act No. 12), which amends the Act on Special Measures Concerning Taxation (Showa 32 Act No. 26). According to the metadata, the amending act has a promulgation date of 2026-03-31 and a stated enforcement date of 2027-05-20. This is an unofficial English summary of a law-search database entry and must be verified against the authoritative Japanese source.

Business Impact

Organizations subject to Japanese income tax or the special taxation measures could be affected by changes introduced through this amendment.

Recommended Action

Review the official Japanese source on e-Gov Law Search to confirm the specific provisions, promulgation, and enforcement dates before drawing any conclusions.

Timeline of related official records

Related official records are linked only when names and instrument numbers match exactly, so this timeline may be incomplete. Dates are as stated by the official sources. It is a monitoring aid, not legal advice; the original Japanese sources are authoritative.

1. Date not stated by the source — Bill listed by the House of Representatives (Diet session 221) 所得税法等の一部を改正する法律案（審議状況：成立） Dashboard page Original Japanese source
2. 2026-03-31 — Promulgated (statute recorded by e-Gov Law Search) 所得税法等の一部を改正する法律（令和八年法律第十二号） (this update) Original Japanese source
3. 2026-04-01 — Effective date stated by e-Gov Law Search 所得税法、租税特別措置法 Dashboard page Original Japanese source
4. 2026-05-01 — Effective date stated by e-Gov Law Search 租税特別措置法 Dashboard page Original Japanese source
5. 2026-06-25 — Effective date stated by e-Gov Law Search 租税特別措置法 Dashboard page Original Japanese source
6. 2026-07-31 — Effective date stated by e-Gov Law Search 租税特別措置法 Dashboard page Original Japanese source
7. 2026-10-01 — Effective date stated by e-Gov Law Search 法人税法、租税特別措置法 Dashboard page Original Japanese source
8. 2026-12-01 — Effective date stated by e-Gov Law Search 所得税法、租税特別措置法 Dashboard page Original Japanese source
9. 2027-01-01 — Effective date stated by e-Gov Law Search 所得税法、租税特別措置法 Dashboard page Original Japanese source
10. 2027-05-20 — Effective date stated by e-Gov Law Search 租税特別措置法 (this update) Original Japanese source
11. 2028-04-01 — Effective date stated by e-Gov Law Search 租税特別措置法 Dashboard page Original Japanese source