Foreign Will in Turkey: Validity, Form and the 1961 Hague Convention

1. Formal validity and substantive succession are different legal questions

A foreign will should never be assessed by asking only whether it resembles a Turkish notarial document. A testamentary disposition can be formally valid under one law while the substantive succession rights connected with the estate are governed by another law. Turkish private international law separates these questions.

Formal validity asks whether the document was executed in a legally accepted form: who signed it, whether witnesses or an official were required, whether handwriting was necessary, and which formal law may validate those steps. Substantive validity asks different questions, including testamentary capacity, reserved shares, the nature of the disposition and the law governing the affected succession.

This distinction is especially important for an overseas owner of Turkish real estate. A will signed abroad may satisfy the Convention’s formal-validity rules, yet the distribution of a Turkish apartment remains subject to the rule in MÖHUK Article 20 that applies Turkish law to immovable property situated in Türkiye.

2. MÖHUK Article 20 is the starting point for a cross-border succession

Private International Law No. 5718 Article 20 provides that succession is generally governed by the deceased’s national law. It then creates a specific rule for immovable property situated in Türkiye: Turkish law applies to that immovable succession. The article also addresses the opening, acquisition and division of the estate by reference to the place where estate property is located.

Article 20 further connects the form of testamentary dispositions to the law’s form rule and recognises dispositions made in accordance with the deceased’s national law. That domestic conflict rule operates alongside Türkiye’s treaty obligations. The consequence is a validation-oriented analysis rather than an assumption that a foreign will fails merely because it was not signed before a Turkish notary.

For a mixed estate, list the assets before giving an answer. Turkish real estate, foreign real estate, Turkish bank accounts and foreign financial assets do not necessarily produce an identical applicable-law analysis. The will should be mapped against the assets it purports to dispose of.

3. Türkiye is a party to the 1961 Hague Form of Wills Convention

The Ministry of Justice lists the Convention of 5 October 1961 on the Conflicts of Laws Relating to the Form of Testamentary Dispositions among the Hague instruments applicable to Türkiye. The HCCH status information likewise records Türkiye as a Contracting Party to that Convention.

The Convention concerns form. It does not create a universal inheritance code and does not determine every substantive succession issue. Its function is to reduce the risk that a testamentary disposition fails solely because different countries impose different execution formalities.

The Convention uses alternative connecting factors. If the form complies with one of the laws designated by Article 1, the disposition can be formally valid within the Convention framework. That makes the place, nationality, domicile, habitual residence and location of immovable property legally relevant facts.

4. Article 1 provides multiple routes to formal validity

Convention Article 1 recognises formal validity where the disposition complies with the internal law of the place where it was made. It also recognises specified nationality connections at execution or death, domicile connections at execution or death, and habitual-residence connections. For immovable property, the law of the place where the property is situated is another relevant validating law.

This is an alternative structure. It is not necessary to satisfy every listed legal system simultaneously. The task is to identify the factual connections and then determine whether at least one applicable route validates the document’s form.

Do not confuse this with document authentication. A will can be formally valid under the Convention and still need an apostille, legalisation where applicable, a certified translation or procedural filing before a Turkish authority will act on it. Formal testamentary validity and evidentiary usability are separate layers.

5. Turkish Civil Code Article 531 sets the domestic testamentary-capacity rule

Article 531 of Civil Code No. 4721 provides the Turkish domestic rule on capacity to make a will: the testator must have the power of discernment and must have completed fifteen years of age. Capacity is not merely a signature-form question. A challenge alleging lack of discernment concerns the legal ability to make the disposition.

Medical records, age records and the circumstances of execution can therefore become relevant in a dispute. A valid apostille does not prove testamentary capacity; it authenticates the origin of a public document within the applicable authentication regime.

For a foreign testator, the applicable-law analysis for capacity must be performed under the relevant private-international-law rules. The Turkish domestic Article 531 rule is important where Turkish law governs that issue and as the baseline for a will executed under Turkish domestic law.

6. Article 532 recognises the official will under Turkish domestic law

Article 532 introduces the official-will form in Turkish law. The statutory procedure involves an authorised official and witnesses under the following Civil Code provisions. A Turkish notarial will is therefore one recognised domestic form, but it is not the only possible testamentary form.

For an overseas client, the existence of the official-will form does not mean that a will made before a foreign authority is automatically invalid. The foreign instrument must instead be tested under the applicable form rules, including the Hague Convention where it applies.

If a new Turkish will is being considered, counsel should also review whether an earlier foreign will exists. A later disposition can revoke or conflict with earlier provisions. Estate planning should not create two documents that appear to dispose of the same asset in inconsistent ways without an express coordination strategy.

7. Article 538 recognises a handwritten will subject to strict statutory elements

Turkish Civil Code Article 538 recognises a handwritten testamentary form. The Code requires the legally specified elements, including handwriting and signature requirements. A typed text carrying a handwritten signature should not automatically be labelled a Turkish handwritten will.

A foreign handwritten will may also be assessed under the Hague Convention’s alternative form laws. The decisive issue is not the informal label used by the family but whether the actual document satisfies a form recognised by one of the applicable validating legal systems.

Preserve the original. Photographs and scans are useful for review, but an original document can be critical to handwriting, signature and alteration questions. Do not write notes on, staple new statements to or physically alter the original after death.

8. Article 539 limits oral wills to extraordinary circumstances

Article 539 provides the Turkish domestic framework for an oral will where the testator cannot use another testamentary form because of extraordinary circumstances described by the statute. It is not a general substitute for a written will whenever formal preparation is inconvenient.

The statutory route involves witnesses and follow-up formalisation requirements under the subsequent provisions. Because oral dispositions create obvious evidentiary risks, the facts, timing and reason another form could not be used must be established precisely.

An overseas family should not rely on a relative’s recollection of a conversation as though it were automatically an enforceable Turkish oral will. Identify the alleged circumstances, witnesses and steps taken immediately afterward, and apply the governing law.

9. Apostille authenticates a public document; it does not make an invalid will valid

The 1961 Apostille Convention and the 1961 Form of Wills Convention are separate treaties. An apostille concerns legalisation of foreign public documents. It authenticates the origin in the simplified Convention framework; it does not decide whether the testamentary disposition itself satisfies the governing form or substantive succession rules.

A foreign notarial will may require an apostille where the issuing and receiving states are within the Apostille Convention and no more specific exemption applies. A private handwritten will presents a different authentication question because the apostille attaches to public acts, not every private paper.

Foreign-language instruments used in Turkish proceedings also require an acceptable Turkish translation. See the existing Apostille and Certified Translation guide.

10. A foreign will must enter the Turkish succession procedure before assets are distributed

After death, the existence of a will is not equivalent to completed distribution. The testamentary document must be presented and processed through the competent Turkish succession procedure when Turkish assets are affected. The Civil Code contains rules on delivery, opening and notification of testamentary dispositions.

The procedure gives interested persons notice and allows the testamentary document to be considered together with legal heirship, objections and any reserved-share rights. A bank or land registry should not be expected to transfer an estate merely because a beneficiary shows an untranslated photocopy of a foreign will.

Keep proof of the deceased’s death, the original testamentary instrument, identity documents and the family records necessary to identify legal heirs. Those records permit the court to distinguish the testamentary beneficiary from persons who retain rights under the statutory succession system.

11. Article 598 governs the certificate for an appointed heir or legatee

Article 598 provides a certificate route for a person appointed by testamentary disposition. Following notification, and subject to the one-month objection framework stated in the article, the Civil Court of Peace can issue a certificate showing appointed-heir or legatee status.

The certificate does not make an otherwise invalid testamentary disposition immune from challenge. Article 598 expressly preserves the right to assert invalidity of a certificate and the right to bring the separate action concerning annulment of a testamentary disposition.

For the court/notary certificate framework applicable to heirs, see Certificate of Inheritance in Turkey for Foreign Heirs.

12. A foreign will can still face substantive challenges in Türkiye

Formal validity is only one potential dispute. Turkish succession law includes grounds for challenging testamentary dispositions, reserved-share protection and reduction remedies. A document that survives a form objection may still be disputed on capacity, unlawful content, defects affecting testamentary intent or reserved-share grounds where the applicable substantive law provides those protections.

The existing Reserved Shares in Turkish Inheritance Law guide explains Articles 505–506 for foreign heirs. A later guide in this series addresses annulment proceedings under Articles 557–559.

Any challenge should distinguish the legal ground from dissatisfaction with the distribution. A beneficiary receiving more than another relative is not, by itself, proof that the will is invalid. The claimant must rely on a recognised legal basis and the facts supporting it.

13. Turkish immovable property requires a separate Article 20 analysis

MÖHUK Article 20 expressly subjects immovable property in Türkiye to Turkish succession law. A foreign will disposing of a Turkish apartment therefore cannot be evaluated solely under the testator’s foreign national law. Turkish substantive inheritance rules for that immovable must also be applied.

The first step is to confirm title ownership. If the deceased owned only a fractional share, the estate concerns that share—not the entire building or family property. Mortgages, seizures and condominium records also remain attached legal realities that succession does not erase.

Once heirship and testamentary entitlement are established, title-registration and inheritance-tax steps are completed through the competent Turkish authorities. The will is part of the evidence, not a self-executing deed transfer.

14. A document-led process prevents unnecessary travel from abroad

Begin with a high-quality copy for legal review but preserve the original will. Supply the death certificate, passport/nationality evidence, family tree, Turkish asset list and any foreign probate order. Identify where and when the will was executed, the testator’s nationality, domicile and habitual residence at execution and death, and the location of any Turkish immovable property.

After the governing law and formal-validity routes are mapped, prepare authentication and translation requirements and determine the competent Turkish procedure. A properly drafted power of attorney can allow counsel to handle many court, tax, bank and registry steps from Türkiye.

Bakırci & Keskin Law Office has one physical office in Mersin and coordinates Turkish inheritance matters throughout Türkiye from Mersin, subject to jurisdiction and the agreed mandate.

Conclusion

A foreign will in Turkey is not invalid simply because it was made outside Türkiye or does not use the Turkish notarial form. MÖHUK Article 20, the form rule and the 1961 Hague Form of Wills Convention must be read together. Convention Article 1 provides multiple alternative connections that can preserve formal validity. Turkish Civil Code Articles 531, 532, 538 and 539 define core domestic rules on capacity and testamentary forms. For Turkish real estate, Turkish substantive succession law remains decisive under Article 20. The original document, authentication, translation, opening/notification and heirship procedures must then be completed before Turkish assets are transferred.