Can you divide only part of an estate first? How a 'partial division agreement' works

In short: an estate can be divided in part first. Co-heirs may, except where the decedent prohibited it by will and so on, at any time divide "the whole or a part of the estate" by their agreement (Civil Code, Article 907(1); the words "or a part" were made explicit by the 2018 reform, in force 1 July 2019). You settle only the fixed real property or deposits first and leave assets that take time to value or contact as undivided. A partial division agreement specifies the target assets and records that the rest will be discussed separately (a reservation). However, the inheritance-tax filing deadline (10 months from the day after you learn of the commencement of inheritance) does not move for a partial division; the undivided part is filed at the statutory shares, and by submitting a "statement of expected division within three years after the filing deadline" you keep room to later apply the spousal tax credit and the small-scale-residential-land special. This article is general information; the propriety of a specific division rests with a qualified professional and the parties. Support for preparing the agreement is by Yotsuba Administrative Scrivener Office (administrative scrivener), the change of title (inheritance registration) by a judicial scrivener, inheritance tax by a tax accountant, and disputes by an attorney, each as an independent business under a separate contract.

Is a "partial division" of only part of an estate legally possible?

Yes. Co-heirs may, except where the decedent prohibited division by will (Civil Code, Article 908) and so on, at any time, by their agreement, divide the whole or a part of the estate (Civil Code, Article 907(1)). The words "the whole or a part" were made explicit by the inheritance-law reform under Act No. 72 of 2018 (in force 1 July 2019). Partial division had been done in practice before the reform, but the reform clarified its basis.

Where an agreement is not reached or cannot be made, each co-heir may request the family court to divide the whole or a part of the estate (Article 907(2)). But there is a proviso: where dividing a part is likely to harm the interests of the other co-heirs, that partial division cannot be requested. Where cutting out only a part would make the division of the rest unfair, the family court may not allow a partial division.

Partial division suits situations such as "we want to transfer title to the home and the representative's deposit account quickly, but unlisted shares and jointly named land take time to value and discuss." You can settle the urgent assets first and divide the time-consuming ones calmly, a staged approach. That all heirs must agree is the same as the full division covered in Can you prepare a division agreement yourself?.

How do you record the remaining assets in a partial division agreement?

In a partial division agreement, first specify the assets to be divided this time, matching the certificate of registered matters and the passbook entries. For real property, write down the location, lot number and building number; for a deposit, the bank name, branch and account number, and clearly state who takes each. Then place a clause reserving how the remaining assets are handled. A common wording is "assets not stated in this agreement shall be determined by separate discussion among all heirs."

Care is needed in wording the reservation. If it is left vague how this partial division affects the shares of the remaining assets (the statutory or concrete shares)—for example, whether "the heir who took the home this time reduces their share in the rest" or "this division is not counted in the calculation of the rest"—it becomes a cause of dispute in the later discussion. It is safer to record the positioning of this division in the agreement. Adding a line on how a newly found asset will be handled (by separate discussion, or by the statutory shares) also reduces the labour of re-discussion.

Which clauses to combine and how differ by case. An administrative scrivener supports preparing documents on rights and duties, but the propriety of a specific division and the judgement of advantage or disadvantage rest with the heirs' own intent and, if there is a dispute, with an attorney and the family court.

How does a partial division affect the inheritance-tax filing and the small-scale-residential-land special?

The inheritance-tax filing deadline is 10 months from the day after you learn of the commencement of inheritance, and it does not move for a partial division. Assets not divided by the deadline (the undivided part) are calculated as acquired by each heir at the statutory shares and are filed and paid once (Inheritance Tax Act, Article 55). This thinking does not change even where assets fixed by partial division and assets left undivided are mixed.

The problem is that the spousal tax credit and the small-scale-residential-land special can, in principle, be used only for "assets divided by the filing deadline." If left undivided, these specials cannot be used and you pay a higher tax once. So if you attach a "statement of expected division within three years after the filing deadline" to the return, you keep room to later apply these specials—by a request for correction and the like—when the rest is divided within three years of the deadline. Taking the home first by partial division can also let you fix the small-scale-residential-land special for that home sooner.

Calculating the tax and whether a special applies is a tax accountant's work. Our office does not give tax advice. The entry point of whether an inheritance-tax filing is needed is organised in Who needs to file inheritance tax. Be sure to consult a tax accountant on individual tax and specials.

What happens with later-found assets, or a dispute over the assets left behind?

Where a new asset comes to light after the partial division, all heirs discuss that asset anew. If you put in the agreement a reservation that "assets not stated shall be discussed separately," you do not in principle need to redo the completed partial division. Without a reservation, it tends to become a discussion from scratch over how the new asset is handled.

Where you cannot agree on how to divide the assets left behind, you file for a family-court division mediation or adjudication over that undivided part. The flow is organised in Estate-division mediation and adjudication. Note that if, after the partial division and before dividing the rest, one heir disposes of an asset belonging to the estate without authority, by the consent of all co-heirs (excluding the one who disposed of it) that asset can be deemed still to exist as estate at the time of division (Civil Code, Article 906-2). This provision adjusts the inconvenience of not being able to achieve fairness with only the remaining assets when the estate is depleted by misappropriation and the like.

When such conflict among heirs enters the "dispute" stage, acting in negotiation and asserting and proving in mediation or adjudication become an attorney's work. An administrative scrivener handles support for preparing the agreement where all heirs have agreed, and does not act in disputes.

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Can registration and withdrawal proceed with just the partial division agreement?

If the acquirer of a specific piece of real property is decided in the partial division agreement, you can proceed with the inheritance registration (change of title) for that property. However, acting for the inheritance-registration application, preparing the application, and legal advice on a specific registration are the work of a judicial scrivener or an attorney. Our office does not act for inheritance registration or prepare the application. Inheritance registration became compulsory from 1 April 2024, and failing to apply within the period without justifiable grounds may incur a non-penal fine. The whole picture is organised in The flow of inheritance registration.

For deposits too, if the acquirer is decided in the partial division agreement, you can proceed with withdrawal and title change through the bank's inheritance procedure. Required documents differ by bank. As a way to withdraw a certain amount before division for funeral costs or immediate living expenses, there is the deposit-withdrawal system (Civil Code, Article 909-2), which is a separate scheme from the partial division agreement; see Withdrawing deposits before estate division. An estate division takes effect retroactively to the time the inheritance commenced, but it cannot harm the rights of a third party (Civil Code, Article 909).

How should you split preparing the agreement, registration, tax and disputes among whom?

A partial division divides by stage.

• Investigation of heirs and property, and support for preparing a partial division agreement where all heirs have agreed → Yotsuba Administrative Scrivener Office (administrative scrivener)
• Negotiation where you cannot agree on how to divide, estate-division mediation and adjudication, and individual legal judgement on rights and obligations → an attorney
• Change of title of real property (inheritance registration) → a judicial scrivener
• Filing and calculation of inheritance tax and whether a special applies → a tax accountant
• Consultation on selling or using inherited real property → Yotsuba Real Estate Co., Ltd.

Yotsuba Administrative Scrivener Office handles support for preparing a partial division agreement where all heirs have agreed, as an independent business. Negotiation and disputes over how to divide are by an attorney, change of title by a judicial scrivener, inheritance tax by a tax accountant, and selling or using inherited real property by Yotsuba Real Estate Co., Ltd. (a separate business), each contracted or consulted separately. Yotsuba Administrative Scrivener Office and Yotsuba Real Estate Co., Ltd. are separate businesses. Our office receives no referral fee. For the whole picture of inheritance procedures, see Inheritance Procedures; for the flow of engagement, see Engagement Flow; for fees, see Fee Schedule; and for consultation on inherited real property, see The window for inherited real property. The final judgement on whether a partial division is appropriate and how to reserve the rest is made by a qualified professional and the parties in light of the circumstances.

FAQ

Q. Is it legally valid to divide only part of an estate first?
A. It is valid. Co-heirs may, except where prohibited by will and so on, at any time divide the whole or a part of the estate by agreement (Civil Code, Article 907(1)). This "part" division was made explicit by the 2018 reform (in force 1 July 2019). All heirs must agree, and you prepare a partial division agreement that specifies the target assets.

Q. Does a partial division extend the inheritance-tax filing deadline?
A. No. The deadline remains 10 months from the day after you learn of the commencement of inheritance. The undivided part is filed at the statutory shares, and attaching a statement of expected division within three years after the filing deadline keeps room to apply the spousal tax credit and the small-scale-residential-land special when divided later. Consult a tax accountant on tax and specials.

Q. If a new asset is found after the partial division, is it a redo?
A. In principle not. If you put in the agreement a reservation that "assets not stated shall be discussed separately," it suffices to discuss only that asset anew. Without a reservation it tends to cause dispute over the scope of re-discussion, so it is safer to record how the remaining assets are handled.

Q. Can I change title to real property with just the partial division agreement?
A. If the acquirer of that property is decided in the agreement, you can proceed with inheritance registration. But acting for the registration application, preparing it, and legal advice on a specific registration are the work of a judicial scrivener or an attorney, which our office does not do. Note also that inheritance registration has been compulsory since 1 April 2024.

Sources (Primary Information)

• e-Gov Law Search, "Civil Code" (Act No. 89 of 1896), Article 896 (general succession), Article 906 (standard of division), Article 906-2 (property disposed of before division), Article 907 (agreement on division; the whole or a part) as amended by Act No. 72 of 2018 (in force 1 July 2019), Article 908 (prohibition of division by will, etc.), Article 909 (effect of division; retroactivity and third-party protection), Article 909-2 (exercise of a deposit claim before division) (accessed 2026-09-25)
• National Tax Agency, Tax Answer No. 4208, "Filing when inherited property is not divided" (filing at the statutory shares when undivided; statement of expected division within three years after the filing deadline; Inheritance Tax Act, Article 55) (accessed 2026-09-25)
• Ministry of Justice, guidance on "Compulsory inheritance registration" (in force 1 April 2024) (accessed 2026-09-25)
• Courts, "Estate-division mediation" (courts.go.jp) (accessed 2026-09-25)

This article is general information and does not guarantee, for a particular estate, the propriety of a partial division, how far to reserve, or whether a special applies. Whether a partial division is likely to harm the interests of other co-heirs, the wording of the reservation, and the tax treatment are individual judgements in light of the circumstances, and if there is a dispute among the heirs, they are settled by family-court mediation, adjudication or litigation. Negotiation and mediation over how to divide, and individual legal judgement on rights and obligations, are by an attorney; change of title of real property (inheritance registration) by a judicial scrivener; filing and calculation of inheritance tax and the judgement on specials by a tax accountant; and selling or using inherited real property by Yotsuba Real Estate Co., Ltd., each as an independent business under a separate contract or consultation. Yotsuba Administrative Scrivener Office and Yotsuba Real Estate Co., Ltd. are separate businesses. Our office receives no referral fee. Individual judgements are made by a qualified professional after a meeting. Written by Joji Uramatsu, administrative scrivener and licensed real estate broker.