# Act No. 45 of 2026: Act Partially Amending the Civil Code, etc.

This is the Markdown twin of https://japanlaw.org/en/acts/508AC0000000045. 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.

Every law on japanlaw.org that Act No. 45 of 2026 amends, and when each change takes effect; promulgated 24 June 2026.

- Number: 令和八年法律第四十五号 (令和8年法律第45号), Act No. 45 of 2026
- Title: Act Partially Amending the Civil Code, etc. (民法等の一部を改正する法律)
- Promulgated: 24 June 2026
- In Japanese: https://japanlaw.org/ja/acts/508AC0000000045
- Changes to Japanese law, by date: https://japanlaw.org/en/changes (as Markdown: https://japanlaw.org/md/en/changes)

## Civil Code (民法)

https://japanlaw.org/en/civil-code

- 24 June 2026: In force. The law in force: https://japanlaw.org/en/civil-code; in Markdown: https://japanlaw.org/md/en/civil-code
- By 23 June 2027: Not yet in force. 25 provisions changed · 23 provisions added · 2 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/civil-code/amendments/20270623_508AC0000000045; the law as amended, in Markdown: https://japanlaw.org/md/en/civil-code/amendments/20270623_508AC0000000045/text
- By 23 December 2028: Not yet in force. 130 provisions changed · 107 provisions added · 68 provisions removed · 20 provisions in the supplementary provisions. What it changes: https://japanlaw.org/en/civil-code/amendments/20281223_508AC0000000045; the law as amended, in Markdown: https://japanlaw.org/md/en/civil-code/amendments/20281223_508AC0000000045/text
- By 23 June 2029: Not yet in force. 2 provisions changed · 6 provisions added. What it changes: https://japanlaw.org/en/civil-code/amendments/20290623_508AC0000000045; the law as amended, in Markdown: https://japanlaw.org/md/en/civil-code/amendments/20290623_508AC0000000045/text

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## Sources

- The dates and the amending law: e-Gov (Digital Agency) (https://laws.e-gov.go.jp/law/129AC0000000089)
- English title of the amending law: Written for this site with AI
- English names of the laws: Japanese Law Translation, Ministry of Justice (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb)