Penalty Clauses and Liquidated Damages in Turkish Contracts: A Practical Guide for Foreign Businesses

A penalty clause (in Turkish, cezai şart) is a sum the parties agree in advance that one side must pay if it breaks the contract — for example, a fixed amount for every day a delivery is late. Under Turkish law these clauses are valid and enforceable, governed by the Turkish Code of Obligations (Türk Borçlar Kanunu No. 6098, articles 179 to 182). The key points for a foreign business are simple: you can normally claim the agreed penalty without proving you actually lost money, a judge can reduce a penalty that is excessively high — but, crucially, when both parties are merchants (tacir), that judicial reduction is generally not available. This guide explains what that means when you draft or face a penalty clause in Türkiye.

What a penalty clause is — and why Turkish law treats it favourably

A penalty clause is a private agreement that fixes, in advance, what one party owes the other for breaking the contract. Instead of arguing after the fact about how much harm a late delivery or a broken confidentiality promise caused, the parties simply name a number. In Turkish that number is the cezai şart (literally 'penal condition'), and it is one of the most common tools in commercial contracts here.

The legal home of the penalty clause is the Turkish Code of Obligations — Türk Borçlar Kanunu No. 6098 — at articles 179 to 182. Turkish law treats these clauses with respect: they are presumed valid, and the courts will enforce them so long as the underlying contract is valid and the penalty is not tied to an obligation that is itself unlawful or impossible.

The biggest practical advantage is in article 180. As a rule, the creditor can demand the agreed penalty even if it suffered no loss at all, and does not have to prove the amount of any damage. This is what makes penalty clauses so useful for foreign businesses — they convert a difficult, evidence-heavy damages claim into a clean, pre-agreed figure.

The three types of penalty clause in Turkish law

Turkish law does not treat every penalty the same way. The Code of Obligations distinguishes between situations where the penalty replaces performance and situations where it adds to it. Knowing which one your clause is changes what you are actually allowed to demand.

1. Penalty instead of performance (seçimlik cezai şart)

This is the default position under m.179/1. If the debtor fails to perform, or performs improperly, the creditor must choose: either demand performance of the contract, or demand the penalty — not both. The penalty stands in place of the missing performance.

2. Penalty in addition to performance (ifaya ekli cezai şart)

Under m.179/2, where the penalty was agreed for breaches of where or when the contract is performed — most often for late delivery or late completion — the creditor can usually demand both the performance and the penalty. The classic example is a daily delay penalty in a construction or supply contract: you still get the building or the goods, and you also collect the agreed sum for every day of delay. This is the type foreign buyers most want in their contracts.

3. The 'buy-out' penalty (dönme cezası / cayma akçesi)

Under m.179/3, the parties can agree that the debtor has the right to withdraw from the contract by paying the penalty. Here the penalty is not really a punishment for breach — it is the price of a lawful exit. If your contract is drafted this way, the other side can simply walk away by paying, which may not be what you intended.

Penalty clause vs. ordinary damages — what you actually have to prove

Foreign clients often ask how a Turkish penalty clause differs from 'liquidated damages' in their home system. The function is similar — a pre-agreed sum for breach — but the proof rules are very favourable to the creditor.

• You do not prove loss. Under m.180/1, you can claim the penalty even if you suffered no damage, and you need not quantify any harm. The breach alone triggers the penalty.
• You can claim extra real loss — but then you must prove it. Under m.180/2, if your actual damage is greater than the penalty, you may also claim the excess, but only by proving the additional loss and the debtor's fault in the ordinary way.
• The penalty is owed even without proven harm, but not without a breach. If the debtor performed correctly, or if the failure is not its fault under the contract, the trigger for the penalty has not been met.

This combination — no need to prove loss for the base figure, plus the option to top up for proven excess loss — is why a carefully drafted penalty clause is often stronger protection than relying on a general damages claim, where you would have to prove both fault and the precise amount.

When a judge can cut the penalty: article 182/3

The penalty is not unlimited. Turkish law gives the courts a safety valve against figures that are wildly out of proportion. Under m.182/3, a judge shall reduce a penalty that is found to be excessively high (fahiş).

When deciding whether a penalty is excessive, a Turkish court weighs factors such as the parties' economic position, the value of the main contract, how serious the breach was, the debtor's degree of fault, and what the creditor stood to gain from performance. The judge reduces the penalty to a level that is still meaningful but no longer oppressive — the clause is not struck out entirely, just trimmed.

For ordinary parties — consumers, employees, individuals — this protection is strong, and it cannot be signed away in advance. A clause saying 'the parties agree the penalty can never be reduced' will not bind a non-merchant.

The merchant rule: why businesses usually cannot get a penalty reduced (TTK m.22)

This is the single most important point for a foreign company contracting in Türkiye. The protective reduction under m.182/3 is largely switched off when the contract is between two merchants.

A merchant (tacir) is, broadly, anyone who runs a commercial enterprise — which includes virtually every trading company. The governing rule is in the Turkish Commercial Code: Türk Ticaret Kanunu No. 6102, m.22.

The logic is that merchants are professionals who negotiate on equal footing and are expected to understand and stand behind the figures they sign. So if your Turkish supplier is a company and your business is a company, and you both agree a heavy daily delay penalty, a Turkish court will, as a rule, hold each side to the full agreed amount — there is no general right to plead later that it was too high.

The practical consequences cut both ways:

• If you are the one protected by the penalty (for example, a buyer with a delay penalty against a contractor), the merchant rule is good news — the figure you negotiated is far more secure.
• If you are the one who might owe the penalty, treat every number as one you will actually have to pay in full. Do not assume a judge will rescue you from an aggressive figure just because it looks steep.

Cross-border contracts: governing law, forum and enforcement

Many contracts a foreign business signs in Türkiye have a 'foreign element' — a foreign party, foreign performance, or assets abroad. That brings in the rules on which law applies and where disputes are heard.

Under the Turkish Act on Private International Law (MÖHUKMÖHUKTurkish Private International Law Act No. 5718The Turkish statute that decides which country's law applies to a cross-border matter, and how foreign judgments are recognised and enforced here.Glossary → No. 5718), parties to an international contract are generally free to choose the law that governs it. If you choose, say, English or Swiss law, a Turkish court will in principle apply that law to the penalty clause — though it will still refuse to enforce a result that violates Turkish public policy (kamu düzeni), which can include a penalty that is grossly abusive.

On the forum, you can usually choose between the Turkish courts and arbitration:

• Turkish courts. Civil procedure is governed by the Code of Civil Procedure (HMKHMKCode of Civil Procedure No. 6100The rulebook for how a civil case actually runs in Türkiye — which court, which steps, which deadlines, and what evidence counts.Glossary → No. 6100). Commercial disputes go to the commercial courts of first instance, and for many monetary claims a mandatory mediation step applies before you can file (under Law No. 7155 and related rules) — a point to plan into your timeline.
• Arbitration. For international disputes you may agree to arbitration under the International Arbitration Act (Milletlerarası Tahkim Kanunu No. 4686), or to a foreign seat. Arbitration is often attractive for cross-border contracts because of confidentiality and the international enforceability of awards.

Practical drafting and review checklist for your contracts

Whether you are writing a penalty clause or reviewing one a Turkish counterparty has proposed, a few questions decide how much protection — or exposure — you really have.

• Which type is it? State clearly whether the penalty is instead of performance, in addition to performance, or a buy-out right. Do not leave it to the m.179/1 default.
• Are both sides merchants? If yes, assume the figure will stand in full under TTK m.22. Size the number with that in mind — on whichever side of it you sit.
• What exactly triggers it? Define the breach precisely (late delivery, defective goods, breach of confidentiality) and how the penalty is calculated (per day, per event, capped or uncapped).
• Is there a cap? An uncapped daily penalty can grow very large. A sensible maximum protects the paying side and still leaves the clause enforceable.
• Performance plus penalty? If you want both the goods and the delay money, say so expressly, in line with m.179/2.
• Currency and indexing. Decide the currency of the penalty and whether it is fixed or adjusted, and check this against Turkish rules on contract currency.
• Governing law and forum. Align the penalty clause with your MÖHUK choice of law and your court-or-arbitration clause.

Because the merchant rule can lock you into the full figure, the time to get a penalty clause right is before signature — not after a dispute has started. If you are entering or reviewing a Turkish contract with a penalty clause, having it checked against m.179-182 and TTKTTKTurkish Commercial Code No. 6102The statute that governs merchants, companies, commercial paper, insurance and carriage — the framework a foreign business actually operates inside.Glossary → m.22 by a Turkish lawyer is a sensible step, so you understand exactly what you are agreeing to.

Frequently asked questions