# 民法 / Civil Code — 第四百六十三条 (Article 463)

- Law: 民法 (Civil Code), 明治二十九年法律第八十九号
- English title "Civil Code": 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: 第四百六十三条 (Article 463)（通知を怠った保証人の求償の制限等） — address `art-463`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/art-463
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-463
- 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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### 第四百六十三条（通知を怠った保証人の求償の制限等） — (Limitation on Reimbursement for Guarantor Who Failed to Give Notice)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-463 · https://japanlaw.org/ja/civil-code/art-463 · https://japanlaw.org/l/129AC0000000089/art-463</sup>

        **第一項**  保証人が主たる債務者の委託を受けて保証をした場合において、主たる債務者にあらかじめ通知しないで債務の消滅行為をしたときは、主たる債務者は、債権者に対抗することができた事由をもってその保証人に対抗することができる。この場合において、相殺をもってその保証人に対抗したときは、その保証人は、債権者に対し、相殺によって消滅すべきであった債務の履行を請求することができる。
        <sup>art-463/par-1 · https://japanlaw.org/ja/civil-code/art-463/par-1 · https://japanlaw.org/l/129AC0000000089/art-463/par-1</sup>
        If a guarantor gives guarantee as requested by the principal obligor and performs an act for extinguishment of obligation without giving prior notice to the principal obligor, the principal obligor may assert against the guarantor any defense that could have been asserted against the obligee. In such a case, if the principal obligor asserts a set-off against the guarantor, the guarantor may request the obligee to perform the obligation which should have been extinguished due to the set-off.
        <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

        **第二項**  保証人が主たる債務者の委託を受けて保証をした場合において、主たる債務者が債務の消滅行為をしたことを保証人に通知することを怠ったため、その保証人が善意で債務の消滅行為をしたときは、その保証人は、その債務の消滅行為を有効であったものとみなすことができる。
        <sup>art-463/par-2 · https://japanlaw.org/ja/civil-code/art-463/par-2 · https://japanlaw.org/l/129AC0000000089/art-463/par-2</sup>
        If a guarantor gives guarantee as requested by the principal obligor and performs an act for extinguishment of obligation in good faith because of the principal obligor's failure to notify the guarantor of the principal obligor's performance of an act for extinguishment of obligation, the guarantor may deem that the guarantor's own act for extinguishment of obligation is valid.
        <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

        **第三項**  保証人が債務の消滅行為をした後に主たる債務者が債務の消滅行為をした場合においては、保証人が主たる債務者の意思に反して保証をしたときのほか、保証人が債務の消滅行為をしたことを主たる債務者に通知することを怠ったため、主たる債務者が善意で債務の消滅行為をしたときも、主たる債務者は、その債務の消滅行為を有効であったものとみなすことができる。
        <sup>art-463/par-3 · https://japanlaw.org/ja/civil-code/art-463/par-3 · https://japanlaw.org/l/129AC0000000089/art-463/par-3</sup>
        If the principal obligor performs an act for extinguishment of obligation after the guarantor has performed an act for extinguishment of obligation, the principal obligor may deem that the guarantor's own act for extinguishment of obligation is valid, not only if the guarantor has given guarantee against the intention of the principal obligor but also if the principal obligor has performed an act for extinguishment of obligation in good faith because of the guarantor's failure to notify the principal obligor of the guarantor's performance of act for extinguishment of obligation.
        <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 民法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/129AC0000000089/20260624_508AC0000000045), retrieved 2026-10-11
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Civil Code — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11