Turkish Civil Law: Introduction and Core Principles

The Turkish Civil Code (Türk Medeni Kanunu - TMK No. 4721) is the foundation of private law in Turkey. Adopted in 2002 (replacing the 1926 code based on the Swiss Civil Code), it governs the daily life of every individual, from birth to death—and even after. It covers Personal Law (Persons), Family Law, Inheritance Law, and Property Law.

The Big Three Principles

The first articles of the TMK establish the universal rules that apply to all legal relationships in Turkey.

1. Honesty (Dürüstlük Kuralı) - TMK Article 2

“Everyone must abide by the rules of honesty in the exercise of their rights and the fulfillment of their debts.”

Meaning: You must act like a reasonable, fair, and moral person. You cannot lie, cheat, or mislead, even if the strict letter of the contract allows it.
Example: If I rent you a house, I cannot blockade the entrance just because “the contract didn’t say I couldn’t.” Honesty dictates I must let you in.

2. Prohibition of Abuse of Rights (Hakkın Kötüye Kullanılması) - TMK Article 2/2

“The legal order does not protect the manifest abuse of a right.”

Meaning: Even if you have a right, you cannot use it solely to harm others or for a purpose contrary to its intention.
Example: A landlord has the right to inspect the property. But if he comes every single day at 3 AM “to inspect,” he is abusing his right to harass the tenant. The court will stop him.

3. Good Faith (İyiniyet) - TMK Article 3

“In cases where the law attaches legal consequences to the existence of good faith, the existence of good faith is presumed.”

Meaning: Good faith implies “not knowing” about an irregularity.
Example: You buy a watch from a shop. The shop owner actually stole it (but you didn’t know). Because you acted in “Good Faith,” you become the legal owner (in some cases) or are protected from claims. However, if you bought a Rolex for $10 in a dark alley, you cannot claim good faith because a reasonable person would suspect it was stolen.

Scope of Civil Law

Law of Persons: Birth, death, capacity to act, associations, and foundations.
Family Law: Marriage, divorce, custody, adoption.
Inheritance Law: Wills, heirs, reserved portions.
Property Law: Ownership, land registry, mortgages, possession.

Conclusion

Turkish Civil Law is a logic-based system where abstract principles (like Good Faith) override rigid technicalities. Understanding these core concepts is essential for navigating any legal dispute in Turkey.

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