New Inheritance Law (Law No. 5303/2026): The Most Important Changes You Need to Know:

The most significant reform of Greek inheritance law in recent decades is now a reality. With the enactment of Law No. 5303/2026, published in the Government Gazette (Government Gazette A’ 81/22.05.2026), the Fifth Book of the Greek Civil Code has been comprehensively revised, introducing modern provisions that reflect today’s social, family, and economic realities.

As a general rule, the new provisions apply to the estates of individuals who pass away on or after 16 September 2026.

The new law aims to:

• Enhance legal certainty;
• Reduce inheritance-related disputes among heirs;
• Improve the administration of estates;
• Strengthen the protection of both heirs and third parties involved in inheritance matters.

1. Introduction of Inheritance Agreements

Perhaps the most significant innovation introduced by Law No. 5303/2026 is the recognition of inheritance agreements, a legal institution that had previously been prohibited under Greek law.

Subject to specific legal requirements and executed in the form of a notarial deed, individuals may now agree in advance on the distribution of their estate after death. This new mechanism offers greater legal certainty and is particularly useful for succession planning involving family businesses or substantial assets.

2. Reform of Intestate Succession and the Reserved Share

The new legislation introduces significant amendments concerning:

• the order of succession among relatives;
• the inheritance shares allocated to heirs;
• the reserved portion (forced heirship);
• the inheritance rights of the surviving spouse.

These amendments are intended to align inheritance rules with modern family structures while preserving the legal protection afforded to close family members.

3. New Rules on Heirs’ Liability for the Deceased’s Debts

Another important reform concerns the liability of heirs for the debts of the deceased.

The new framework limits the risk of heirs becoming automatically liable with their personal assets for obligations that were unknown at the time they accepted the inheritance. As a result, the law enhances legal protection for heirs while promoting greater security in legal and commercial transactions.

4. Modernisation of Estate Administration

The new provisions also seek to improve the efficiency of estate administration, particularly in cases involving debts or complex assets.

By modernising the estate administration process, the legislator aims to reduce delays and facilitate the timely completion of inheritance procedures.

5. Strengthening Legal Certainty in Wills

Law No. 5303/2026 also introduces provisions designed to:

• accelerate the publication of wills;
• reduce legal disputes concerning testamentary dispositions;
• ensure more effective protection of the testator’s true intentions.

These measures are expected to reduce lengthy inheritance litigation and provide greater certainty for beneficiaries and heirs alike.

6. What Should Citizens Do?

The new legal framework makes it advisable for many individuals and families to review their estate planning arrangements.

In particular, those who own significant real estate, operate family businesses, or wish to organise the transfer of their assets in advance should seek tailored legal advice. Proper planning will enable them to take full advantage of the opportunities offered by the new legislation while minimising the risk of future disputes.

Conclusion

Law No. 5303/2026 represents the most comprehensive reform of Greek inheritance law in decades. Its provisions fundamentally reshape the way estates are planned, inherited, and administered, while strengthening the legal protection available to heirs.