# 民法 / Civil Code — 第十七条 (Supplementary Provisions, Article 17) - 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: 第十七条 (Supplementary Provisions, Article 17)（債務不履行の責任等に関する経過措置） — address `suppl-4291-44/art-17` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17 - 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. --- ### 第十七条（債務不履行の責任等に関する経過措置） — Transitional Measures Concerning Liability for Non-Performance, etc. caption: machine translation, not official suppl-4291-44/art-17 · https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17 **第一項** 施行日前に債務が生じた場合（施行日以後に債務が生じた場合であって、その原因である法律行為が施行日前にされたときを含む。附則第二十五条第一項において同じ。）におけるその債務不履行の責任等については、新法第四百十二条第二項、第四百十二条の二から第四百十三条の二まで、第四百十五条、第四百十六条第二項、第四百十八条及び第四百二十二条の二の規定にかかわらず、なお従前の例による。 suppl-4291-44/art-17/par-1 · https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17/par-1 With regard to liability for non-performance, etc. of an obligation in the case where the obligation arose before the Effective Date (including the case where the obligation arose on or after the Effective Date and the juridical act that is its cause was performed before the Effective Date; the same applies in Article 25, paragraph (1) of the Supplementary Provisions), notwithstanding the provisions of Article 412, paragraph (2), Articles 412-2 through 413-2, Article 415, Article 416, paragraph (2), Article 418, and Article 422-2 of the New Act, the provisions then in force continue to govern. machine translation, not official **第二項** 新法第四百十七条の二（新法第七百二十二条第一項において準用する場合を含む。）の規定は、施行日前に生じた将来において取得すべき利益又は負担すべき費用についての損害賠償請求権については、適用しない。 suppl-4291-44/art-17/par-2 · https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17/par-2 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17/par-2 The provisions of Article 417-2 of the New Act (including as applied mutatis mutandis pursuant to Article 722, paragraph (1) of the New Act) do not apply to a claim for damages for benefits to be obtained or expenses to be borne in the future that arose before the Effective Date. machine translation, not official **第三項** 施行日前に債務者が遅滞の責任を負った場合における遅延損害金を生ずべき債権に係る法定利率については、新法第四百十九条第一項の規定にかかわらず、なお従前の例による。 suppl-4291-44/art-17/par-3 · https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17/par-3 With regard to the statutory interest rate relating to a claim that is to bear delay damages in the case where the obligor assumed responsibility for delay before the Effective Date, notwithstanding the provisions of Article 419, paragraph (1) of the New Act, the provisions then in force continue to govern. machine translation, not official **第四項** 施行日前にされた旧法第四百二十条第一項に規定する損害賠償の額の予定に係る合意及び旧法第四百二十一条に規定する金銭でないものを損害の賠償に充てるべき旨の予定に係る合意については、なお従前の例による。 suppl-4291-44/art-17/par-4 · https://japanlaw.org/ja/civil-code/suppl-4291-44/art-17/par-4 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-17/par-4 With regard to an agreement on liquidated damages prescribed in Article 420, paragraph (1) of the Former Act and an agreement to appropriate anything other than money as compensation for damage prescribed in Article 421 of the Former Act, made before the Effective Date, the provisions then in force continue to govern. machine translation, not official --- ## Cites - suppl-4291-44/art-17/par-1: 附則第二十五条第一項 → 民法 附則第二十五条第一項 (Supplementary Provisions, Article 25, paragraph (1)), suppl-4291-44/art-25/par-1 — https://japanlaw.org/ja/civil-code/suppl-4291-44/art-25/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-25/par-1 - suppl-4291-44/art-17/par-1: 新法第四百十二条第二項 → 民法 第四百十二条第二項 (Article 412, paragraph (2)), art-412/par-2 — https://japanlaw.org/ja/civil-code/art-412/par-2 · https://japanlaw.org/l/129AC0000000089/art-412/par-2 - suppl-4291-44/art-17/par-1: 第四百十二条の二から第四百十三条の二まで → 民法 第四百十二条の二 (Article 412-2), art-412-2 — https://japanlaw.org/ja/civil-code/art-412-2 · https://japanlaw.org/l/129AC0000000089/art-412-2 - suppl-4291-44/art-17/par-1: 第四百十二条の二から第四百十三条の二まで → 民法 第四百十三条 (Article 413), art-413 — https://japanlaw.org/ja/civil-code/art-413 · https://japanlaw.org/l/129AC0000000089/art-413 - suppl-4291-44/art-17/par-1: 第四百十二条の二から第四百十三条の二まで → 民法 第四百十三条の二 (Article 413-2), art-413-2 — https://japanlaw.org/ja/civil-code/art-413-2 · https://japanlaw.org/l/129AC0000000089/art-413-2 - suppl-4291-44/art-17/par-1: 第四百十五条 → 民法 第四百十五条 (Article 415), art-415 — https://japanlaw.org/ja/civil-code/art-415 · https://japanlaw.org/l/129AC0000000089/art-415 - suppl-4291-44/art-17/par-1: 第四百十六条第二項 → 民法 第四百十六条第二項 (Article 416, paragraph (2)), art-416/par-2 — https://japanlaw.org/ja/civil-code/art-416/par-2 · https://japanlaw.org/l/129AC0000000089/art-416/par-2 - suppl-4291-44/art-17/par-1: 第四百十八条 → 民法 第四百十八条 (Article 418), art-418 — https://japanlaw.org/ja/civil-code/art-418 · https://japanlaw.org/l/129AC0000000089/art-418 - suppl-4291-44/art-17/par-1: 第四百二十二条の二 → 民法 第四百二十二条の二 (Article 422-2), art-422-2 — https://japanlaw.org/ja/civil-code/art-422-2 · https://japanlaw.org/l/129AC0000000089/art-422-2 - suppl-4291-44/art-17/par-2: 新法第四百十七条の二 → 民法 第四百十七条の二 (Article 417-2), art-417-2 — https://japanlaw.org/ja/civil-code/art-417-2 · https://japanlaw.org/l/129AC0000000089/art-417-2 - suppl-4291-44/art-17/par-2: 新法第七百二十二条第一項 → 民法 第七百二十二条第一項 (Article 722, paragraph (1)), art-722/par-1 — https://japanlaw.org/ja/civil-code/art-722/par-1 · https://japanlaw.org/l/129AC0000000089/art-722/par-1 - suppl-4291-44/art-17/par-3: 新法第四百十九条第一項 → 民法 第四百十九条第一項 (Article 419, paragraph (1)), art-419/par-1 — https://japanlaw.org/ja/civil-code/art-419/par-1 · https://japanlaw.org/l/129AC0000000089/art-419/par-1 --- ## 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 - claude-sonnet-5-5 — Machine translation, batch civil-code-20261011T170941-021, translated 2026-10-12 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11