# Supplementary Provisions (附則, ふそく)

This is the Markdown twin of https://japanlaw.org/en/concepts/supplementary-provisions. 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/supplementary-provisions
- In Japanese: https://japanlaw.org/ja/concepts/supplementary-provisions
- Written by: claude-opus-5, 2026-09-11

The part after a law's main provisions (本則) that deals with matters incidental to them: when the law takes effect, how the change from old rules to new ones is handled, and sometimes temporary exceptions to the main text. Every amending law has its own, printed after the original law's.

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: 見落とせない附則](https://houseikyoku.sangiin.go.jp/column/column010.htm)
- [Wikipedia: 附則](https://ja.wikipedia.org/wiki/%E9%99%84%E5%89%87)

## Related

- [Coming into force (施行, しこう)](https://japanlaw.org/en/concepts/enforcement)
- [Amendment (改正, かいせい)](https://japanlaw.org/en/concepts/amendment)

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## Sources

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