# 自動車損害賠償保障法 / Act on Securing Compensation for Automobile Accidents — 第二十一条 (Article 21)

- Law: 自動車損害賠償保障法 (Act on Securing Compensation for Automobile Accidents), 昭和三十年法律第九十七号
- English title "Act on Securing Compensation for Automobile Accidents": 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: 第二十一条 (Article 21)（告知義務違反による契約解除の効力） — address `art-21`
- Text in force since: 2026-04-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/automobile-accident-compensation-act/art-21
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/330AC0000000097/art-21
- 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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### 第二十一条（告知義務違反による契約解除の効力） — (Effect of a Contract Rescission That Is Due to Breach of Duty of Disclosure)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-21 · https://japanlaw.org/ja/automobile-accident-compensation-act/art-21 · https://japanlaw.org/l/330AC0000000097/art-21</sup>

  **第一項**  保険法第二十八条第一項の規定により、保険会社が責任保険の契約を解除したときは、その解除は、保険契約者が解除の通知を受けた日から起算して七日の後に、その効力を生ずる。
  <sup>art-21/par-1 · https://japanlaw.org/ja/automobile-accident-compensation-act/art-21/par-1 · https://japanlaw.org/l/330AC0000000097/art-21/par-1</sup>
  If an insurer rescinds a contract for liability insurance pursuant to Article 28, paragraph (1) of the Insurance Act, the rescission takes effect after seven days, counting from the day that the policyholder is notified of the rescission.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **第二項**  前項の解除の効力が生ずる日前に保険事故（保険法第五条第一項に規定する保険事故をいう。次条第三項において同じ。）が発生した場合には、同法第三十一条第二項第一号の規定にかかわらず、保険会社は、損害をてん補する責任を負う。この場合において、保険会社が損害をてん補したときは、保険契約者に対し、そのてん補した金額の支払を請求することができる。
  <sup>art-21/par-2 · https://japanlaw.org/ja/automobile-accident-compensation-act/art-21/par-2 · https://japanlaw.org/l/330AC0000000097/art-21/par-2</sup>
  Notwithstanding Article 31, paragraph (2), item (i) of the Insurance Act, if any insured event (meaning an insured event provided for in Article 5, paragraph (1) of the Insurance Act; the same applies in paragraph (3) of the following Article) occurs before the day that a rescission as referred to in the preceding paragraph takes effect, the insurer is liable to indemnify for the damage. If an insurer provides an indemnity for damage in such a case, it may require the policyholder to pay the amount of that indemnity.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-21/par-1: 保険法第二十八条第一項 → e-Gov law 420AC0000000056, 第二十八条第一項 (Article 28, paragraph (1)), art-28/par-1 — not held in this collection
- art-21/par-2: 前項 → 自動車損害賠償保障法 第二十一条第一項 (Article 21, paragraph (1)), art-21/par-1 — https://japanlaw.org/ja/automobile-accident-compensation-act/art-21/par-1 · https://japanlaw.org/l/330AC0000000097/art-21/par-1
- art-21/par-2: 保険法第五条第一項 → e-Gov law 420AC0000000056, 第五条第一項 (Article 5, paragraph (1)), art-5/par-1 — not held in this collection
- art-21/par-2: 次条第三項 → 自動車損害賠償保障法 第二十二条第三項 (Article 22, paragraph (3)), art-22/par-3 — https://japanlaw.org/ja/automobile-accident-compensation-act/art-22/par-3 · https://japanlaw.org/l/330AC0000000097/art-22/par-3
- art-21/par-2: 同法第三十一条第二項第一号 → e-Gov law 420AC0000000056, 第三十一条第二項第一号 (Article 31, paragraph (2), item (i)), art-31/par-2/item-1 — not held in this collection

## Cited by

3 provisions cite this one. No official source publishes this direction.

- 自動車損害賠償保障法 第二十一条第二項（告知義務違反による契約解除の効力） — https://japanlaw.org/ja/automobile-accident-compensation-act/art-21/par-2 · https://japanlaw.org/l/330AC0000000097/art-21/par-2
- 自動車損害賠償保障法 第二十三条の二第一項（報告及び立入検査） — https://japanlaw.org/ja/automobile-accident-compensation-act/art-23-2/par-1 · https://japanlaw.org/l/330AC0000000097/art-23-2/par-1
- 自動車損害賠償保障法 第二十三条の三第一項（責任保険の契約に関する規定等の準用） — https://japanlaw.org/ja/automobile-accident-compensation-act/art-23-3/par-1 · https://japanlaw.org/l/330AC0000000097/art-23-3/par-1

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 自動車損害賠償保障法 — the text in force from 2026-04-01 (https://laws.e-gov.go.jp/law/330AC0000000097/20260401_508AC0000000002), retrieved 2026-10-13
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Act on Securing Compensation for Automobile Accidents — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3135/tb), retrieved 2026-10-13
- This site's parser, version 189 — 自動車損害賠償保障法 — structure, counts, cross-references and defined terms, computed 2026-10-13
