One heir thinks a house is worth far more than another does. Or a relative wants to take over the business at an amount others cannot verify. A valuation dispute becomes clearer once the calculation's purpose is established. Inheritance tax returns, division of jointly held assets and calculation of a monetary claim may use different starting points. A valuer therefore needs clear instructions. This guide discusses the approach for a Dutch estate and the choices to record before agreement.
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1. First establish which entitlement is being calculated
Determine whether the heirs jointly own the asset to be divided. Under statutory division, the survivor acquires assets and children generally receive monetary claims. Calculating these differs from a home inherited jointly by three children and divided later. A legacy, reserved portion or usufruct may also raise its own valuation questions. Ask for a legal-basis overview before everyone starts defending different amounts.
Next check what actually belongs to the estate. A home may have belonged only partly to the deceased; ownership may be accompanied by debts or agreements with a co-owner. Distinguish the share in an asset, the value of the whole asset and the amount remaining after debts. An appraised home value does not prove someone's net inheritance share. Other assets, obligations and internal adjustments must also be identified. Use a separate line for each ownership share and debt. State the source of the amount so others can check the calculation without first searching every attachment.
2. Choose an appropriate division reference date
The starting point for valuing jointly held assets upon division is the division date. Parties may agree another date; reasonableness and fairness can also justify departure. The death date therefore does not automatically determine a later buyout of a co-heir. Keep the inventory at death alongside the valuation for later division. Intervening changes must be traceable in the records.
In December 2023, the Supreme Court clarified how this works when the court determines division. In principle the judgment date then counts as the division date. On appeal, it matters whether the division itself is disputed again or only valuation. Merely awaiting notarial implementation does not automatically shift the reference date. In ongoing proceedings, have the operative decision and objections assessed before commissioning an expensive new valuation.
3. Keep the home's tax value separate
Inheritance tax has its own valuation rules. For a home, the Dutch Tax Administration says a choice may be made between the WOZ value for the death year and the following year. Special situations may have different effects. That tax choice does not automatically determine the price for a civil-law buyout between heirs. Therefore label each amount as used for tax, a division proposal or another entitlement. Avoid a document mixing these purposes without identifying them.
A mortgage must also be processed carefully. The valuer values the asset; the debt and internal responsibility require a separate calculation. Include current loan details and repayments made, but do not deduct the same debt twice. With letting, ground lease or usufruct, clarify existing rights and the assumptions for the calculation concerned. If uncertain, request tax and civil-law explanations on the same facts, with separate conclusions for each purpose.
4. Give an independent expert clear instructions
Agree jointly who performs the valuation and what expertise is needed. A local property expert may suit a home; shares or a business require different knowledge and information. Record the reference date, rights to investigate, access to the property, available documents and cost allocation. Give each participant the same opportunity to provide factual information. Also record missing data and assumptions consequently used in the report. Add a joint list of questions and ask the expert to confirm they fall within the assignment. Send later additions to all participants simultaneously.
Decide beforehand whether the report is advisory only or parties intend to accept a binding valuation. Joint instructions do not automatically make every outcome binding. Conversely, a clear binding agreement cannot be ignored merely through disappointment. Include how factual errors are corrected, whether questions on a draft are allowed and which disputes remain outside the assignment. The expert does not automatically determine heirship or legal responsibility for a debt.
5. Support objections with verifiable data
A useful objection identifies precisely the incorrect assumption or calculation. For a home, this may concern floor area, maintenance, an existing tenancy, comparable properties or the chosen condition at the reference date. Attach evidence such as a measurement report, photos, an agreement or relevant correspondence. Merely saying an estate agent does not understand the neighbourhood helps less than a specific difference in property characteristics. First request explanation or correction before commissioning a wholly second investigation. Set out the disputed data, your evidence and requested correction for each objection. State when a difference concerns merely another assumption rather than an arithmetic error.
For business assets, debts, profit expectations, dependence on the deceased and continuation agreements deserve attention. Book value and economic value may differ. For household contents, distinguish emotional significance from a substantiated sale value. An old purchase receipt does not prove current value. Have a disputed item estimated separately and investigate whether a limited agreement is possible. The entire administration then need not stop because one painting or claim remains disputed.
6. Address value, costs and use together
Rent income, maintenance costs, insurance premiums and repayments may arise between death and division. Include them in a separate account with supporting documents and the payer identified. An heir using the home may additionally face compensation for use; this differs from the home's market value. A renovation they carried out likewise gives no entitlement, without examination, to reimbursement of every invoice or the full increase in value.
Fictional example: three children want to allocate a home to one of them. They jointly choose a recent reference date and obtain an independent valuation. They then settle the mortgage and substantiated advances separately. The acquiring heir must still demonstrate that financing and release of others from any joint and several liability are feasible. Agreement on the valuation amount alone does not resolve these questions. Therefore also record payment, conveyance and a fallback if financing fails.
7. Prepare a decision or judicial division
If discussion fails, the court may order the manner of division or determine division itself under Article 3:185 of the Dutch Civil Code. Allocation against compensation and sale may be considered. Not every difference between two valuations requires a court-appointed expert investigation. Explain the decision needed, the financial interest and why available information is insufficient. The court weighs participants' interests and is not bound without limit by every proposed detail of division.
For advice, bring the will, inventory, earlier reports, valuation instructions, loan details and specific objections. Also keep agreements on binding effect or an earlier reference date; these may strongly determine the dispute. Sign a final account with full and final release only once you understand which values and unknown entries it incorporates. If division has already occurred, challenging it has its own conditions and deadlines. A higher sale price later does not automatically invalidate an earlier division. Also make a short list of agreed points. Show which amount or choice remains open so advice and discussion can focus on it.
Frequently asked questions
Must my brother buy me out at the WOZ value?
Not automatically. Tax WOZ rules do not automatically determine the internal buyout price. Examine the legal basis, earlier agreements and appropriate value and reference date for this division.
Which date applies if division proceedings take a long time?
For judicial determination, the judgment date generally applies. Agreements, reasonableness and fairness and the scope of appeal can make a difference. Have the specific decisions assessed.
Can I reject a joint valuation because the result disappoints me?
Dissatisfaction alone is insufficient. Check whether binding effect was agreed and identify specific errors or incorrect assumptions. Options for challenging a binding valuation require separate assessment.
Sources
These sources relate to this page. For a specific case, check current rules and your own documents.
- Hoge Raad — ECLI:NL:HR:2023:1722 Accessed: 2026-10-23
- Rechtbank Noord-Holland — ECLI:NL:RBNHO:2026:1723 Accessed: 2026-10-23
- Belastingdienst — Waarde erfenis voor de erfbelasting Accessed: 2026-10-23
- Waarderingskamer — WOZ en rijksbelastingen Accessed: 2026-10-23
- Burgerlijk Wetboek Boek 3 — gemeenschap Accessed: 2026-10-23
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Editorial team Inheritance law in the Netherlands
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