A will is one of the most important legal instruments through which a person expresses their final wishes. Under the Turkish Civil Code, wills are subject to strict formal and substantive requirements. However, the mere existence of a will does not guarantee that it will be enforced. The law allows certain individuals to challenge and invalidate a will when specific legal defects are present.
The main grounds for the cancellation of a will can generally be examined under the following categories.
1. Lack of Legal Capacity
At the time the will is executed, the testator must have the mental capacity to understand the nature and consequences of their actions.
In practice, wills prepared at an advanced age often give rise to disputes involving conditions such as:
- Dementia
- Alzheimer’s disease
- Other illnesses affecting mental capacity
Legal Consequences: If it can be established—often through medical evidence and expert examinations—that the testator lacked legal capacity when the will was executed, the will may be declared invalid from the outset.
2. Defects of Consent: Mistake, Fraud, Duress, and Undue Influence
A valid will must reflect the genuine and free intention of the testator.
If the will was prepared under the influence of deception, coercion, or pressure, an action for cancellation may be brought.
Fraud and Duress
A will may be challenged if a beneficiary intentionally misled the testator or used threats or intimidation to influence the contents of the testamentary disposition.
3. Failure to Comply with Legal Formalities
Under Turkish law, a will must be executed in one of the legally recognized forms:
- Official will
- Handwritten will
- Oral will (under exceptional circumstances)
Each type is subject to strict procedural requirements.
Official Wills
An official will may be challenged if essential formalities—such as the presence of witnesses or proper official certification—have not been satisfied.
Handwritten Wills
A handwritten will must generally:
- Be entirely written by the testator’s own handwriting
- Include the full date (day, month, and year)
- Bear the testator’s signature
Documents prepared electronically or printed from a computer do not meet these legal requirements.
4. Unlawful or Immoral Content
The purpose and content of a will must comply with the law, public policy, and accepted moral principles.
For example, a testamentary provision that requires the commission of a criminal act or an act contrary to public morality may be declared invalid.
Time Limits and Legal Procedure
An action for the cancellation of a will must generally be filed within one year from the date on which the interested party becomes aware of both the will and the reason for its invalidity.
In any event, statutory limitation periods apply. Depending on the circumstances and the good or bad faith of the beneficiary, longer legal deadlines may also govern the right to bring a claim.
The competent court for these disputes is generally the Civil Court of First Instance, and the action is brought against the persons who benefit from the contested will rather than against all heirs.
Cancellation of a Will vs. Reduction of a Will
It is important to distinguish between an action for cancellation and a reduction (tenkis) action.
A cancellation lawsuit seeks to invalidate the will entirely because of legal defects such as lack of capacity, fraud, or procedural irregularities.
A reduction action, on the other hand, accepts that the will is legally valid but argues that it unlawfully infringes upon the reserved shares of protected heirs.
If the will complies with legal formalities but deprives you of the inheritance portion protected by law, a reduction action may be the appropriate legal remedy rather than a cancellation lawsuit.
Protecting Your Inheritance Rights
Inheritance disputes often involve complex factual and legal questions. Determining whether a will should be cancelled or merely reduced requires a careful evaluation of the circumstances surrounding its preparation and execution.
Seeking professional legal advice at an early stage can help preserve your rights, ensure compliance with strict legal deadlines, and provide the most appropriate strategy for protecting your inheritance interests.