# 所得税法施行令 / Order for Enforcement of the Income Tax Act — 第一条 (Supplementary Provisions, Article 1)

This is the Markdown twin of https://japanlaw.org/ja/income-tax-act-enforcement-order/suppl-4052-29/art-1. 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.

- Law: 所得税法施行令 (Order for Enforcement of the Income Tax Act), 昭和四十年政令第九十六号
- English title "Order for Enforcement of the Income Tax Act": Ministry of Justice translation
- Kind: CabinetOrder — 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: 第一条 (Supplementary Provisions, Article 1)（施行期日） — address `suppl-4052-29/art-1`
- Text in force since: 2026-05-22
- URL (the page that opens at this provision): https://japanlaw.org/ja/income-tax-act-enforcement-order/suppl-4052-29/art-1
- e-Gov law ID: 340CO0000000096 — never renamed. A permanent link, `/l/{lawId}/{address}` on this site, redirects to the page.
- Every provision below carries its address and its URL 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.

---

### 第一条（施行期日） — Effective Date
<sup>caption: machine translation, not official</sup>
<sup>suppl-4052-29/art-1 · https://japanlaw.org/ja/income-tax-act-enforcement-order/suppl-4052-29/art-1</sup>

**第一項**  この政令は、金融制度及び証券取引制度の改革のための関係法律の整備等に関する法律（平成四年法律第八十七号。以下「制度改革法」という。）の施行の日（平成五年四月一日）から施行する。
<sup>suppl-4052-29/art-1/par-1 · https://japanlaw.org/ja/income-tax-act-enforcement-order/suppl-4052-29/art-1/par-1</sup>
This Cabinet Order comes into effect as of the day of enforcement of the Act on the Arrangement, etc. of Relevant Acts for the Reform of the Financial System and the Securities Transaction System (Act No. 87 of 1992; hereinafter referred to as the "Financial and Securities System Reform Act") (April 1, 1993).
<sup>machine translation, not official</sup>

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 所得税法施行令 — the text in force from 2026-05-22 (https://laws.e-gov.go.jp/law/340CO0000000096/20260522_508CO0000000093), retrieved 2026-11-06
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Order for Enforcement of the Income Tax Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3121/tb), retrieved 2026-11-06
- claude-sonnet-5-5 — Machine translation, batch income-tax-act-enforcement-order-20261106T173921-093, translated 2026-11-07
- claude-sonnet-5-5 — Machine translation, batch income-tax-act-enforcement-order-20261106T173921-111, translated 2026-11-07
- This site's parser, version 229 — 所得税法施行令 — structure, counts, cross-references and defined terms, computed 2026-11-06