# 民法 / Civil Code — 第五百四十八条の四 (Article 548-4) - 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: 第五百四十八条の四 (Article 548-4)（定型約款の変更） — address `art-548-4` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/art-548-4 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-548-4 - 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. --- ### 第五百四十八条の四（定型約款の変更） — (Amendment to Standard Terms and Conditions) caption: Ministry of Justice translation — Japanese Law Translation Database System art-548-4 · https://japanlaw.org/en/civil-code/art-548-4 · https://japanlaw.org/l/129AC0000000089/art-548-4 **第一項** 定型約款準備者は、次に掲げる場合には、定型約款の変更をすることにより、変更後の定型約款の条項について合意があったものとみなし、個別に相手方と合意をすることなく契約の内容を変更することができる。 art-548-4/par-1 · https://japanlaw.org/en/civil-code/art-548-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1 In the following cases, a preparer of the standard terms and conditions may, by amending the standard terms and conditions, amend the contract terms without making separate agreements with each of the counterparties and deem that the parties have agreed to the amended provisions of the standard terms and conditions: Ministry of Justice translation — Japanese Law Translation Database System **一** 定型約款の変更が、相手方の一般の利益に適合するとき。 art-548-4/par-1/item-1 · https://japanlaw.org/en/civil-code/art-548-4/par-1/item-1 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1/item-1 if the amendment to the standard terms and conditions conforms to the general interest of the counterparties; or Ministry of Justice translation — Japanese Law Translation Database System **二** 定型約款の変更が、契約をした目的に反せず、かつ、変更の必要性、変更後の内容の相当性、この条の規定により定型約款の変更をすることがある旨の定めの有無及びその内容その他の変更に係る事情に照らして合理的なものであるとき。 art-548-4/par-1/item-2 · https://japanlaw.org/en/civil-code/art-548-4/par-1/item-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1/item-2 if the amendment to the standard terms and conditions does not run afoul of the purpose of the contract, and it is reasonable in light of the circumstances concerning the amendment such as the necessity of the amendment, the appropriateness of the details of the amended conditions, and the details of the contract provisions and whether it is specified in the contract that the standard terms and conditions may be subject to an amendment pursuant to the provisions of this Article. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 定型約款準備者は、前項の規定による定型約款の変更をするときは、その効力発生時期を定め、かつ、定型約款を変更する旨及び変更後の定型約款の内容並びにその効力発生時期をインターネットの利用その他の適切な方法により周知しなければならない。 art-548-4/par-2 · https://japanlaw.org/en/civil-code/art-548-4/par-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-2 If a preparer of the standard terms and conditions is to amend the standard terms and conditions under the provisions of the preceding paragraph, the preparer must specify the time when the amendment takes effect, and make amendments to the standard terms and conditions, the details of the amended standard terms and conditions, and the time when the amendment takes place known to the public by an appropriate method such as using the internet. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 第一項第二号の規定による定型約款の変更は、前項の効力発生時期が到来するまでに同項の規定による周知をしなければ、その効力を生じない。 art-548-4/par-3 · https://japanlaw.org/en/civil-code/art-548-4/par-3 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-3 An amendment to the standard terms and conditions under the provisions of paragraph (1), item (ii) does not become effective unless it is made known to the public pursuant to the provisions of that paragraph by the time when the amendment takes effect referred to in the preceding paragraph. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 第五百四十八条の二第二項の規定は、第一項の規定による定型約款の変更については、適用しない。 art-548-4/par-4 · https://japanlaw.org/en/civil-code/art-548-4/par-4 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-4 The provisions of Article 548-2, paragraph (2) do not apply to an amendment to the standard terms and conditions under the provisions of paragraph (1). Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-548-4/par-1/item-2: この条 → 民法 第五百四十八条の四 (Article 548-4), art-548-4 — https://japanlaw.org/en/civil-code/art-548-4 · https://japanlaw.org/l/129AC0000000089/art-548-4 - art-548-4/par-2: 前項 → 民法 第五百四十八条の四第一項 (Article 548-4, paragraph (1)), art-548-4/par-1 — https://japanlaw.org/en/civil-code/art-548-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1 - art-548-4/par-3: 第一項第二号 → 民法 第五百四十八条の四第一項第二号 (Article 548-4, paragraph (1), item (ii)), art-548-4/par-1/item-2 — https://japanlaw.org/en/civil-code/art-548-4/par-1/item-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1/item-2 - art-548-4/par-3: 前項 → 民法 第五百四十八条の四第二項 (Article 548-4, paragraph (2)), art-548-4/par-2 — https://japanlaw.org/en/civil-code/art-548-4/par-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-2 - art-548-4/par-4: 第五百四十八条の二第二項 → 民法 第五百四十八条の二第二項 (Article 548-2, paragraph (2)), art-548-2/par-2 — https://japanlaw.org/en/civil-code/art-548-2/par-2 · https://japanlaw.org/l/129AC0000000089/art-548-2/par-2 - art-548-4/par-4: 第一項 → 民法 第五百四十八条の四第一項 (Article 548-4, paragraph (1)), art-548-4/par-1 — https://japanlaw.org/en/civil-code/art-548-4/par-1 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1 ## Cited by 5 provisions cite this one. No official source publishes this direction. - 民法 第五百四十八条の四第一項第二号（定型約款の変更） — https://japanlaw.org/en/civil-code/art-548-4/par-1/item-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-1/item-2 - 民法 第五百四十八条の四第二項（定型約款の変更） — https://japanlaw.org/en/civil-code/art-548-4/par-2 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-2 - 民法 第五百四十八条の四第三項（定型約款の変更） — https://japanlaw.org/en/civil-code/art-548-4/par-3 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-3 - 民法 第五百四十八条の四第四項（定型約款の変更） — https://japanlaw.org/en/civil-code/art-548-4/par-4 · https://japanlaw.org/l/129AC0000000089/art-548-4/par-4 - 民法 附則第三十三条第一項（定型約款に関する経過措置） — https://japanlaw.org/en/civil-code/suppl-4291-44/art-33/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-33/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 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11