# 法人税法 / Corporation Tax Act — 附　則 (Supplementary Provisions)

- Law: 法人税法 (Corporation Tax Act), 昭和四十年法律第三十四号
- English title "Corporation Tax Act": Ministry of Justice translation
- Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say.
- Provision: 附　則 (Supplementary Provisions) — address `suppl-4131-129`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/en/corporation-tax-act/suppl-4131-129
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/340AC0000000034/suppl-4131-129
- Every provision below carries its address and both URLs on the line under it.
- Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below.

Only the Japanese as published by the government has legal effect; the text
below is a copy of it. Every English rendering below is a translation and
says which kind: the Ministry of Justice's translation, or this
site's machine translation, whose model and date the Sources list names.
They are never merged and never substituted for one another.

---

## 附　則 平成一三年一一月二八日法律第一二九号
<sup>suppl-4131-129 · https://japanlaw.org/en/corporation-tax-act/suppl-4131-129 · https://japanlaw.org/l/340AC0000000034/suppl-4131-129</sup>

**第一項**  この法律は、平成十四年四月一日から施行する。
<sup>suppl-4131-129/par-1 · https://japanlaw.org/en/corporation-tax-act/suppl-4131-129/par-1 · https://japanlaw.org/l/340AC0000000034/suppl-4131-129/par-1</sup>
This Act comes into effect on April 1, 2002.
<sup>machine translation, not official</sup>

**第二項**  この法律の施行前にした行為及びこの法律の規定により従前の例によることとされる場合におけるこの法律の施行後にした行為に対する罰則の適用については、なお従前の例による。
<sup>suppl-4131-129/par-2 · https://japanlaw.org/en/corporation-tax-act/suppl-4131-129/par-2 · https://japanlaw.org/l/340AC0000000034/suppl-4131-129/par-2</sup>
The provisions then in force continue to govern the application of penal provisions to conduct engaged in before this Act comes into effect and to conduct engaged in after this Act comes into effect in the cases in which prior laws are to govern pursuant to the provisions of this Act.
<sup>machine translation, not official</sup>

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 法人税法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/340AC0000000034/20261001_508AC0000000012), retrieved 2026-10-08
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Corporation Tax Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3115/tb), retrieved 2026-10-08
- claude-opus-5-5 — Machine translation, batch corporation-tax-act-20261008T111236-092, translated 2026-10-08
- This site's parser, version 165 — 法人税法 — structure, counts, cross-references and defined terms, computed 2026-10-08