# Amendment (改正, かいせい)

This is the Markdown twin of https://japanlaw.org/en/concepts/amendment. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp.

- Group: Laws and how to read them
- URL: https://japanlaw.org/en/concepts/amendment
- In Japanese: https://japanlaw.org/ja/concepts/amendment
- Written by: claude-opus-5, 2026-09-11

A change to a law's text. It is made by a separate law or order — the amending act — usually written as instructions to replace, delete or add words. An Act amending part of another Act is usually titled 〇〇法の一部を改正する法律, "act amending part of…", or 〇〇法等の一部を改正する法律 when it amends three or more.

Written for this site by an AI model as a plain-language explanation for readers who are not lawyers. Not reviewed by a lawyer.

## Provisions and sources it draws on

- [Upper House Legislative Bureau: 改め文](https://houseikyoku.sangiin.go.jp/column/column050.htm)
- [Wikipedia: 改め文方式](https://ja.wikipedia.org/wiki/%E6%94%B9%E3%82%81%E6%96%87%E6%96%B9%E5%BC%8F)

## Related

- [Constitution (憲法, けんぽう)](https://japanlaw.org/en/concepts/constitution)
- [Order with the force of an Act (法律としての効力を有する命令, ほうりつとしてのこうりょくをゆうするめいれい)](https://japanlaw.org/en/concepts/order-with-force-of-act)
- [Not yet in force (未施行, みしこう)](https://japanlaw.org/en/concepts/unenforced)
- [The Diet (国会, こっかい)](https://japanlaw.org/en/concepts/diet)
- [Imprisonment (拘禁刑, こうきんけい)](https://japanlaw.org/en/concepts/imprisonment)
- [Imprisonment with work (懲役, ちょうえき)](https://japanlaw.org/en/concepts/imprisonment-with-work)
- [Imprisonment without work (禁錮, きんこ)](https://japanlaw.org/en/concepts/imprisonment-without-work)
- [Supplementary Provisions (附則, ふそく)](https://japanlaw.org/en/concepts/supplementary-provisions)

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## Sources

- Explanation: Written for this site with AI (claude-opus-5, 2026-09-11)