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Civil Code

民法(みんぽう)

Chapter I General Provisions (Articles 465-5 to 466-5)

The law as Act Partially Amending the Civil Code, etc. (Act No. 45 of 2026) leaves it, with the words it changes marked.

The main text is read a page at a time: a chapter to a page, and a long chapter in runs of articles. The whole main text, and the supplementary provisions and appended tables this amendment changes. Those it leaves untouched are on the page for the text in force.

Article 465-5第四百六十五条の五

Right to Reimbursement in Contract for Revolving Guarantee When the Guarantor Is a Corporation(保証人が法人である根保証契約の求償権)
Article 465-5, paragraph (1)

If a contract for revolving guarantee under which the guarantor is a corporation does not provide for the maximum amount prescribed in Article 465-2, paragraph (1), a guarantee contract under which the principal obligation is an obligation arising from the right to reimbursement held by the guarantor of the contract for revolving guarantee against the principal obligor does not become effective.

保証人が法人である根保証契約において、第四百六十五条の二第一項に規定する極度額の定めがないときは、その根保証契約の保証人の主たる債務者に対する求償権に係る債務を主たる債務とする保証契約は、その効力を生じない。

Article 465-5, paragraph (2)

If a contract for revolving guarantee under which the guarantor is a corporation and the scope of the principal obligation includes a loan obligation does not provide for the principal fixed date, or its provisions concerning the principal fixed date or any change of it would not become effective should the provisions of Article 465-3, paragraph (1) or paragraph (3) be applied, a guarantee contract under which the principal obligation is an obligation arising from the right to reimbursement held by the guarantor of the revolving guarantee contract against the principal obligor does not become effective. The same applies to a contract for revolving guarantee under which the scope of the principal obligation includes an obligation arising from the right to reimbursement.

保証人が法人である根保証契約であってその主たる債務の範囲に貸金等債務が含まれるものにおいて、元本確定期日の定めがないとき、又は元本確定期日の定め若しくはその変更が第四百六十五条の三第一項若しくは第三項の規定を適用するとすればその効力を生じないものであるときは、その根保証契約の保証人の主たる債務者に対する求償権に係る債務を主たる債務とする保証契約は、その効力を生じない。主たる債務の範囲にその求償権に係る債務が含まれる根保証契約も、同様とする。

Article 465-5, paragraph (3)

The provisions of the preceding two paragraphs do not apply if the guarantor of a guarantee contract under which the principal obligation is an obligation arising from the right to reimbursement or of a contract for revolving guarantee under which the scope of the principal obligation includes an obligation arising from the right to reimbursement is a corporation.

前二項の規定は、求償権に係る債務を主たる債務とする保証契約又は主たる債務の範囲に求償権に係る債務が含まれる根保証契約の保証人が法人である場合には、適用しない。

Division 3 Special Provisions for Guarantee Contract for Obligations Arising from Business第三目 事業に係る債務についての保証契約の特則

Article 465-6第四百六十五条の六

Preparation of Notarial Instrument and Effect of Guarantee(公正証書の作成と保証の効力)
Article 465-6, paragraph (1)

A guarantee contract under which the principal obligation is a loan obligation assumed for business or a contract for a revolving guarantee under which the scope of the principal obligation includes a loan obligation assumed for business does not become effective unless the person intending to become a guarantor manifests, before the conclusion of the contract, the intention to perform the guarantee obligation by means of a notarial instrument prepared within one month before the day of conclusion of the contract.

事業のために負担した貸金等債務を主たる債務とする保証契約又は主たる債務の範囲に事業のために負担する貸金等債務が含まれる根保証契約は、その契約の締結に先立ち、その締結の日前一箇月以内に作成された公正証書で保証人になろうとする者が保証債務を履行する意思を表示していなければ、その効力を生じない。

Article 465-6, paragraph (2)

The notarial instrument referred to in the preceding paragraph must be prepared in compliance with the following formalities:

前項の公正証書を作成するには、次に掲げる方式に従わなければならない。

Article 465-6, paragraph (2), item (i)

the person intending to become a guarantor gives the notary oral instructions regarding the particulars specified in (a) or (b) below for the category of contract stated in this:

保証人になろうとする者が、次のイ又はロに掲げる契約の区分に応じ、それぞれ当該イ又はロに定める事項を公証人に口授すること。

Article 465-6, paragraph (2), item (i), (a)

a guarantee contract (excluding the one stated in (b)):the obligee and obligor of the principal obligation, the principal of the principal obligation, whether any interest, penalty or damages in connection with the principal obligation or any other charges secondary to the obligation are provided for in the contract and, if so, its details, as well as the fact that the person intending to become a guarantor has the intention to pay the entire amount of the obligation if the principal obligor fails to perform the obligation (if the person intending to become a guarantor intends to assume the obligation jointly and severally with the principal obligor, the intention to pay the entire amount of the obligation, regardless of whether the obligee has made a demand to the principal obligor, whether the principal obligor is able to perform the obligation, or whether the principal obligor has any other guarantor); or

保証契約(ロに掲げるものを除く。) 主たる債務の債権者及び債務者、主たる債務の元本、主たる債務に関する利息、違約金、損害賠償その他その債務に従たる全てのものの定めの有無及びその内容並びに主たる債務者がその債務を履行しないときには、その債務の全額について履行する意思(保証人になろうとする者が主たる債務者と連帯して債務を負担しようとするものである場合には、債権者が主たる債務者に対して催告をしたかどうか、主たる債務者がその債務を履行することができるかどうか、又は他に保証人があるかどうかにかかわらず、その全額について履行する意思)を有していること。

Article 465-6, paragraph (2), item (i), (b)

a contract for a revolving guarantee:the obligee and obligor of the principal obligation, the scope of the principal obligation, the maximum amount under the contract for revolving guarantee, whether the principal fixed date is provided for in the contract and, if so, its details, as well as the fact that the person intending to become a guarantor has the intention to pay the entire amount of the obligation with regard to the principal of the principal obligation and any interest, penalty, and damages in connection with the principal obligation and any other charges secondary to the obligation, which are to arise by the principal fixed date or the time when an event that causes the crystallization of the principal takes place, such as the events stated in the items of Article 465-4, paragraph (1) or the items of paragraph (2) of that Article, up to the maximum amount, if the principal obligor fails to perform the obligation (if the person intending to become a guarantor s to assume the obligation jointly and severally with the principal obligor, the intention to pay the entire amount of the obligation, regardless of whether the obligee has made a demand to the principal obligor, whether the principal obligor is able to perform the obligation, or whether the principal obligor has any other guarantor);

根保証契約 主たる債務の債権者及び債務者、主たる債務の範囲、根保証契約における極度額、元本確定期日の定めの有無及びその内容並びに主たる債務者がその債務を履行しないときには、極度額の限度において元本確定期日又は第四百六十五条の四第一項各号若しくは第二項各号に掲げる事由その他の元本を確定すべき事由が生ずる時までに生ずべき主たる債務の元本及び主たる債務に関する利息、違約金、損害賠償その他その債務に従たる全てのものの全額について履行する意思(保証人になろうとする者が主たる債務者と連帯して債務を負担しようとするものである場合には、債権者が主たる債務者に対して催告をしたかどうか、主たる債務者がその債務を履行することができるかどうか、又は他に保証人があるかどうかにかかわらず、その全額について履行する意思)を有していること。

Article 465-6, paragraph (2), item (ii)

the notary takes dictation from the person intending to become the guarantor, and reads this aloud to, or allows its inspection by, the person intending to become the guarantor;

公証人が、保証人になろうとする者の口述を筆記し、これを保証人になろうとする者に読み聞かせ、又は閲覧させること。

Article 465-6, paragraph (2), item (iii)

the person intending to become a guarantor signs and seals the instrument after having approved the accuracy of the dictation taken by the notary; provided, however, that if the person intending to become a guarantor is unable to sign, the notary may include a supplementary note giving the reason therefor in lieu of the signature of that person; and

保証人になろうとする者が、筆記の正確なことを承認した後、署名し、印を押すこと。ただし、保証人になろうとする者が署名することができない場合は、公証人がその事由を付記して、署名に代えることができる。

Article 465-6, paragraph (2), item (iv)

the notary includes a supplementary note to the effect that the instrument has been prepared in compliance with the formalities stated in the preceding three items, and signs and seals the instrument.

公証人が、その証書は前三号に掲げる方式に従って作ったものである旨を付記して、これに署名し、印を押すこと。

Article 465-6, paragraph (3)

The provisions of the preceding two paragraphs do not apply if the person intending to become a guarantor is a corporation.

前二項の規定は、保証人になろうとする者が法人である場合には、適用しない。

Article 465-7第四百六十五条の七

Special Provisions for Formalities of Notarial Instrument on Guarantee(保証に係る公正証書の方式の特則)
Article 465-7, paragraph (1)

If a person intending to become a guarantor of a guarantee contract or a contract for a revolving guarantee referred to in paragraph (1) of the preceding Article is unable to speak, the person must make a statement in front of the notary of the particulars specified in paragraph (2), item (i), (a) or (b) of that Article for the category of contract stated therein, through an interpreter or by that person's own hand, in lieu of the oral instructions referred to in the same item. In such a case, to apply the provisions of item (ii) of that paragraph, the term "oral instructions" in that item is deemed to be replaced with "statement through an interpreter or by that person's own hand".

前条第一項の保証契約又は根保証契約の保証人になろうとする者が口がきけない者である場合には、公証人の前で、同条第二項第一号イ又はロに掲げる契約の区分に応じ、それぞれ当該イ又はロに定める事項を通訳人の通訳により申述し、又は自書して、同号の口授に代えなければならない。この場合における同項第二号の規定の適用については、同号中「口述」とあるのは、「通訳人の通訳による申述又は自書」とする。

Article 465-7, paragraph (2)

If a person intending to become a guarantor of a guarantee contract or contract for revolving guarantee referred to in paragraph (1) of the preceding Article is unable to hear, the notary may convey the content of the dictation taken as prescribed in paragraph (2), item (ii) of that Article to the person intending to become a guarantor, through an interpreter, in lieu of the reading it aloud referred to in the same item.

前条第一項の保証契約又は根保証契約の保証人になろうとする者が耳が聞こえない者である場合には、公証人は、同条第二項第二号に規定する筆記した内容を通訳人の通訳により保証人になろうとする者に伝えて、同号の読み聞かせに代えることができる。

Article 465-7, paragraph (3)

If a notary prepares a notarial instrument in compliance with the formalities prescribed in the preceding two paragraphs, the notary must include a supplementary note to that effect on the instrument.

公証人は、前二項に定める方式に従って公正証書を作ったときは、その旨をその証書に付記しなければならない。

Article 465-8第四百六十五条の八

Preparation of Notarial Instrument and Effect of Guarantee for Right to Reimbursement(公正証書の作成と求償権についての保証の効力)
Article 465-8, paragraph (1)

The provisions of Article 465-6, paragraphs (1) and (2) and the preceding Article apply mutatis mutandis to a guarantee contract under which the principal obligation is a loan obligation assumed for business or a guarantee contract under which the principal obligation is an obligation relating to the right to reimbursement held by a guarantor against the principal obligor under a revolving guarantee contract under which the scope of the principal obligation includes a loan obligation assumed for business. The same applies to a contract for revolving guarantee under which the scope of the principal obligation includes an obligation relating to that right to reimbursement.

第四百六十五条の六第一項及び第二項並びに前条の規定は、事業のために負担した貸金等債務を主たる債務とする保証契約又は主たる債務の範囲に事業のために負担する貸金等債務が含まれる根保証契約の保証人の主たる債務者に対する求償権に係る債務を主たる債務とする保証契約について準用する。主たる債務の範囲にその求償権に係る債務が含まれる根保証契約も、同様とする。

Article 465-8, paragraph (2)

The provisions of the preceding paragraph do not apply if the person intending to become a guarantor is a corporation.

前項の規定は、保証人になろうとする者が法人である場合には、適用しない。

Article 465-9第四百六十五条の九

Exclusion from Application of Provisions Concerning Preparation of Notarial Instrument and Effect of Guarantee(公正証書の作成と保証の効力に関する規定の適用除外)
Article 465-9, paragraph (1)

The provisions of the preceding three Articles do not apply to a guarantee contract under which the person intending to become a guarantor is any of the following persons:

前三条の規定は、保証人になろうとする者が次に掲げる者である保証契約については、適用しない。

Article 465-9, paragraph (1), item (i)

if the principal obligor is a corporation, its managing administrator, director, executive officer, or any person equivalent thereto; or

主たる債務者が法人である場合のその理事、取締役、執行役又はこれらに準ずる者

Article 465-9, paragraph (1), item (ii)

if the principal obligor is a corporation, any of the following persons:

主たる債務者が法人である場合の次に掲げる者

Article 465-9, paragraph (1), item (ii), (a)

a person that holds the majority of voting rights of all shareholders (excluding voting rights in respect of shares that do not allow voting rights to be exercised for all matters that may be resolved at a shareholders meeting; the same applies in this item below) of the principal obligor;

主たる債務者の総株主の議決権(株主総会において決議をすることができる事項の全部につき議決権を行使することができない株式についての議決権を除く。以下この号において同じ。)の過半数を有する者

Article 465-9, paragraph (1), item (ii), (b)

if the majority of voting rights of all shareholders of the principal obligor is held by another stock company: a person that holds the majority of voting rights of all shareholders of that other stock company; or

主たる債務者の総株主の議決権の過半数を他の株式会社が有する場合における当該他の株式会社の総株主の議決権の過半数を有する者

Article 465-9, paragraph (1), item (ii), (c)

if the majority of voting rights of all shareholders of the principal obligor is held by another stock company and a person that holds the majority of voting rights of all shareholders of that other stock company: a person that holds the majority of voting rights of all shareholders of that other stock company;

主たる債務者の総株主の議決権の過半数を他の株式会社及び当該他の株式会社の総株主の議決権の過半数を有する者が有する場合における当該他の株式会社の総株主の議決権の過半数を有する者

Article 465-9, paragraph (1), item (ii), (d)

if the principal obligor is a corporation that is not a stock company: a person equivalent to the person stated in (a), (b) or (c); or

株式会社以外の法人が主たる債務者である場合におけるイ、ロ又はハに掲げる者に準ずる者

Article 465-9, paragraph (1), item (iii)

a person that conducts business jointly with the principal obligor (excluding one that is a corporation; the same applies in this item below) or the principal obligor's spouse who actually engages in the business conducted by the principal obligor.

主たる債務者(法人であるものを除く。以下この号において同じ。)と共同して事業を行う者又は主たる債務者が行う事業に現に従事している主たる債務者の配偶者

Article 465-10第四百六十五条の十

Duty to Provide Information upon Conclusion of a Contract(契約締結時の情報の提供義務)
Article 465-10, paragraph (1)

If the principal obligor requests a person to give guarantee for an obligation to be assumed for business as the principal obligation or give revolving guarantee for an obligation to be assumed for business that is included in the scope of the principal obligation, the principal obligor must provide the person so requested with information concerning the following particulars:

主たる債務者は、事業のために負担する債務を主たる債務とする保証又は主たる債務の範囲に事業のために負担する債務が含まれる根保証の委託をするときは、委託を受ける者に対し、次に掲げる事項に関する情報を提供しなければならない。

Article 465-10, paragraph (1), item (i)

the status of assets, and income and expenditure;

財産及び収支の状況

Article 465-10, paragraph (1), item (ii)

whether the principal obligor has any obligation other than the principal obligation, and its amount and its status of performance; and

主たる債務以外に負担している債務の有無並びにその額及び履行状況

Article 465-10, paragraph (1), item (iii)

if the principal obligor has provided or intends to provide any other security for the principal obligation, an indication of this and the details of the security.

主たる債務の担保として他に提供し、又は提供しようとするものがあるときは、その旨及びその内容

Article 465-10, paragraph (2)

If, because the principal obligor fails to provide information concerning the particulars stated in the items of the preceding paragraph or provides information that is factually inaccurate, the person requested to guarantee misunderstands these particulars and manifests the intention to offer or accept the offer of a guarantee contract based on the misunderstanding, the guarantor may rescind the guarantee contract if the obligee knew or could have known that the principal obligor failed to provide information concerning these particulars or provided information that was factually inaccurate.

主たる債務者が前項各号に掲げる事項に関して情報を提供せず、又は事実と異なる情報を提供したために委託を受けた者がその事項について誤認をし、それによって保証契約の申込み又はその承諾の意思表示をした場合において、主たる債務者がその事項に関して情報を提供せず又は事実と異なる情報を提供したことを債権者が知り又は知ることができたときは、保証人は、保証契約を取り消すことができる。

Article 465-10, paragraph (3)

The provisions of the preceding two paragraphs do not apply if the person that gives guarantee is a corporation.

前二項の規定は、保証をする者が法人である場合には、適用しない。

Section 4 Assignment of Claims第四節 債権の譲渡

Article 466第四百六十六条

Assignability of Claims(債権の譲渡性)
Article 466, paragraph (1)

A claim may be assigned; provided, however, that this does not apply if its nature does not permit the assignment.

債権は、譲り渡すことができる。ただし、その性質がこれを許さないときは、この限りでない。

Article 466, paragraph (2)

Even if a party to a claim manifests the intention to prohibit or restrict the assignment of the claim (referred to as the "manifestation of intention to restrict assignment" below), the validity of the assignment of the claim is not impaired.

当事者が債権の譲渡を禁止し、又は制限する旨の意思表示(以下「譲渡制限の意思表示」という。)をしたときであっても、債権の譲渡は、その効力を妨げられない。

Article 466, paragraph (3)

In the case prescribed in the preceding paragraph, the obligor may refuse to perform the obligation to a third party such as the assignee that knew or did not know due to gross negligence that the manifestation of intention to restrict assignment was made, and may duly assert against the third party any event that results in extinguishment of the obligation such as payment to the assignor.

前項に規定する場合には、譲渡制限の意思表示がされたことを知り、又は重大な過失によって知らなかった譲受人その他の第三者に対しては、債務者は、その債務の履行を拒むことができ、かつ、譲渡人に対する弁済その他の債務を消滅させる事由をもってその第三者に対抗することができる。

Article 466, paragraph (4)

The provisions of the preceding paragraph do not apply if the obligor does not perform the obligation, and the third party prescribed in that paragraph makes a demand to the obligor for the performance to the assignor by specifying a reasonable period of time, but the obligor does not perform the obligation within that period.

前項の規定は、債務者が債務を履行しない場合において、同項に規定する第三者が相当の期間を定めて譲渡人への履行の催告をし、その期間内に履行がないときは、その債務者については、適用しない。

Article 466-2第四百六十六条の二

Deposit Made by Obligor for Claim Subject to Manifestation of Intention to Restrict Assignment(譲渡制限の意思表示がされた債権に係る債務者の供託)
Article 466-2, paragraph (1)

If a claim for payment of money subject to the manifestation of intention to restrict assignment is assigned to a third party, the obligor may deposit the amount of money equivalent to the full amount of the claim with an official depository having jurisdiction over the place of performance of the obligation (including the current domicile of the assignor if the place of performance of the obligation is determined on the basis of the current domicile of the obligee; the same applies in the following Article).

債務者は、譲渡制限の意思表示がされた金銭の給付を目的とする債権が譲渡されたときは、その債権の全額に相当する金銭を債務の履行地(債務の履行地が債権者の現在の住所により定まる場合にあっては、譲渡人の現在の住所を含む。次条において同じ。)の供託所に供託することができる。

Article 466-2, paragraph (2)

An obligor that has made a deposit pursuant to the provisions of the preceding paragraph must notify the assignor and the assignee of the deposit without delay.

前項の規定により供託をした債務者は、遅滞なく、譲渡人及び譲受人に供託の通知をしなければならない。

Article 466-2, paragraph (3)

Only the assignee is entitled to request the refund of the money deposited pursuant to the provisions of paragraph (1).

第一項の規定により供託をした金銭は、譲受人に限り、還付を請求することができる。

Article 466-3第四百六十六条の三

Article 466-3, paragraph (1)

In the case prescribed in paragraph (1) of the preceding Article, if an order commencing bankruptcy proceeding is issued with regard to the assignor, the assignee (limited to the one that has acquired the full amount of the claim referred to in that paragraph and that may duly assert the assignment of the claim against a third party such as the obligor) may have the obligor deposit the amount of money equivalent to the full amount of the claim with an official depository having jurisdiction over the place of performance of the obligation even if the assignee knew or did not know due to gross negligence that the manifestation of intention to restrict assignment was made. In such a case, the provisions of paragraphs (2) and (3) of that Article apply mutatis mutandis.

前条第一項に規定する場合において、譲渡人について破産手続開始の決定があったときは、譲受人(同項の債権の全額を譲り受けた者であって、その債権の譲渡を債務者その他の第三者に対抗することができるものに限る。)は、譲渡制限の意思表示がされたことを知り、又は重大な過失によって知らなかったときであっても、債務者にその債権の全額に相当する金銭を債務の履行地の供託所に供託させることができる。この場合においては、同条第二項及び第三項の規定を準用する。

Article 466-4第四百六十六条の四

Seizure of Claim Subject to Manifestation of Intention to Restrict Assignment(譲渡制限の意思表示がされた債権の差押え)
Article 466-4, paragraph (1)

The provisions of Article 466, paragraph (3) do not apply to an attaching obligee that has conducted enforcement against a claim that is subject to the manifestation of intention to restrict assignment.

第四百六十六条第三項の規定は、譲渡制限の意思表示がされた債権に対する強制執行をした差押債権者に対しては、適用しない。

Article 466-4, paragraph (2)

Notwithstanding the provisions of the preceding paragraph, if a third party such as the assignee knew or did not know due to gross negligence that the manifestation of intention to restrict assignment was made, and the obligee of the assignee or other third party conducted enforcement against the claim referred to in that paragraph, the obligor may refuse to perform the obligation and duly assert against an attaching obligee any event that results in extinguishing the obligation such as payment to the assignor.

前項の規定にかかわらず、譲受人その他の第三者が譲渡制限の意思表示がされたことを知り、又は重大な過失によって知らなかった場合において、その債権者が同項の債権に対する強制執行をしたときは、債務者は、その債務の履行を拒むことができ、かつ、譲渡人に対する弁済その他の債務を消滅させる事由をもって差押債権者に対抗することができる。

Article 466-5第四百六十六条の五

Effect of Manifestation of Intention to Restrict Assignment of Claim for Deposits or Claim for Savings(預金債権又は貯金債権に係る譲渡制限の意思表示の効力)
Article 466-5, paragraph (1)

Notwithstanding the provisions of Article 466, paragraph (2), the manifestation of intention to restrict assignment which is made by a party with regard to a claim for deposits in a deposit account or a claim for savings in a saving account (referred to as a "claim for deposits" below) may be duly asserted against a third party such as the assignee that knew or did not know due to gross negligence that the manifestation of intention to restrict assignment was made.

預金口座又は貯金口座に係る預金又は貯金に係る債権(以下「預貯金債権」という。)について当事者がした譲渡制限の意思表示は、第四百六十六条第二項の規定にかかわらず、その譲渡制限の意思表示がされたことを知り、又は重大な過失によって知らなかった譲受人その他の第三者に対抗することができる。

Article 466-5, paragraph (2)

The provisions of the preceding paragraph do not apply to an attaching obligee that has conducted enforcement against a claim for deposits that is subject to the manifestation of intention to restrict assignment.

前項の規定は、譲渡制限の意思表示がされた預貯金債権に対する強制執行をした差押債権者に対しては、適用しない。

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