# 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-4121-20`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/corporation-tax-act/suppl-4121-20
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/340AC0000000034/suppl-4121-20
- 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.

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## 附　則 平成一二年三月三一日法律第二〇号
<sup>suppl-4121-20 · https://japanlaw.org/ja/corporation-tax-act/suppl-4121-20 · https://japanlaw.org/l/340AC0000000034/suppl-4121-20</sup>

### 第一条（施行期日） — Effective Date
<sup>caption: machine translation, not official</sup>
<sup>suppl-4121-20/art-1 · https://japanlaw.org/ja/corporation-tax-act/suppl-4121-20/art-1 · https://japanlaw.org/l/340AC0000000034/suppl-4121-20/art-1</sup>

**第一項**  この法律は、国民年金法等の一部を改正する法律（平成十二年法律第十八号）附則第一条第六号に掲げる規定の施行の日から施行する。
<sup>suppl-4121-20/art-1/par-1 · https://japanlaw.org/ja/corporation-tax-act/suppl-4121-20/art-1/par-1 · https://japanlaw.org/l/340AC0000000034/suppl-4121-20/art-1/par-1</sup>
This Act comes into effect on the date on which the provisions set forth in Article 1, item (vi) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. (Act No. 18 of 2000) come into effect.
<sup>machine translation, not official</sup>

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## 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-20261008T111236-089, 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