Fraud Charges in Turkey: TCK 157 & 158 Defense Guide

A fraud file in Türkiye moves faster than most foreigners expect. A complaint is filed, a prosecutor opens a soruşturma (investigation), and within weeks an account can be frozen or a travel ban imposed — often before anyone tells you which article of the Turkish Penal Code (Türk Ceza Kanunu, TCK) you are accused of breaching. That article number decides the sentence, the deadline and whether paying the money back still helps you.

Key Takeaways

• The Legal Threshold: Under Turkish law, a simple lie is not a crime. Fraud under TCK 157 requires hileli davranış — deceptive conduct that misleads the victim and strips away any realistic chance of checking the truth. That test decides whether there is a crime at all.

• The Two Tiers: Simple Fraud (TCK 157) carries 1–5 years in prison plus a judicial fine of up to 5,000 days; Qualified Fraud (TCK 158) carries 3–10 years plus a fine of up to 5,000 days.

• The Banking Floor: Under paragraphs (e), (f), (j), (k) and (l) of TCK 158/1, the prison term cannot start below four years and the fine cannot be less than twice the benefit obtained.

• The Pivot Point: Whether there is fraud turns on the victim's "realistic opportunity" to verify; whether it is qualified turns on the lettered circumstances (a) to (l) in TCK 158/1 or on the separate case in TCK 158/2. However elaborate the deception, if neither route fits, the offence stays at TCK 157.

• The Second Paragraph People Miss: TCK 158/2 is a qualified form in its own right and does not appear in the lettered list. It covers the person who obtains a benefit by deceiving someone with the claim that they have a relationship with public officials, are well regarded by them, and can get a particular matter dealt with — what Turkish practice calls nüfuz ticareti or hatır dolandırıcılığı. It is punished under the first paragraph, so the three-to-ten-year band and the judicial fine apply.

• Effective Repentance: Under TCK 168, full compensation before the indictment is accepted cuts the sentence by up to two-thirds; afterwards, but before judgment, by up to one half.

Is It Fraud, and Is It Qualified? Two Separate Questions

Turkish law asks two questions in a fixed order, and foreign clients routinely collapse them into one. First: is this fraud at all? TCK 157 requires hileli davranış — deceptive conduct that misleads someone and produces a benefit at their expense or at a third party's expense. Second: is the fraud qualified? That depends on one thing only, whether the facts fall inside the closed list of lettered paragraphs in TCK 158/1. However elaborate the lie, if no paragraph fits, the file stays at TCK 157.

Three elements make out the deception requirement of TCK 157:

• Acts of deception: words, conduct, or omission designed to mislead.

• Elimination of verification: the deception must prevent the victim from checking the facts. If a "reasonable person" in the victim's position could have verified the truth, the statement stays a simple lie and no fraud offence arises at all.

• Causal connection: the deception must directly cause the victim's financial loss.

Note the order of the words in TCK 157: the deception comes first, the benefit second. A late delivery or an unpaid invoice stays a civil matter unless the intent to deceive already existed when the money moved.

The Elimination of Verification Test: The Heart of TCK 157

This is where Turkish fraud law differs most from a simple lie. The question is not "did the perpetrator lie?" but "did the lie prevent a reasonable person from discovering the truth?"

Example: Ali tells his neighbor Ayshe that the car he's selling has no mechanical problems. In reality, the engine is failing. If Ayshe could have hired a mechanic to inspect it, there is no fraud offence at all, because the opportunity to verify survived the lie. However, if Ali used official documents forged to hide the car's history—creating a situation where even a reasonable inspection wouldn't reveal the truth—the deception requirement of TCK 157 is met. Whether the charge then rises to TCK 158 is a separate question, answered by the list below.

The Circumstances Listed in TCK 158

The verification test tells you whether there is fraud. The lettered paragraphs of TCK 158/1, (a) to (l), tell you whether it is qualified — and nothing outside that list can make it qualified. The items foreign clients meet most often are (d), using a public institution, a professional public body, a political party, a foundation or an association as the instrument — the paragraph behind forged land-registry and forged-permit files; (f), using information systems, banks or credit institutions as the instrument — the basis of almost every online and wire-transfer file; (h), commission by a trader, a company manager or a person acting on behalf of a company during commercial activity; (i), abuse by a liberal professional of the trust their profession attracts; (j) and (k), improper bank loans and insurance payouts; and (l), posing as a public officer or as bank, insurance or credit-institution staff, added by Law No. 6763 in 2016. TCK 158/3 adds one half where three or more people act together, and doubles the sentence where a criminal organisation is behind it.

Real-World Scenarios: Where the Two Questions Lead

Scenario 1: False Invoices in a Business Deal

Mehmet presents fake invoices showing he's a legitimate supplier with years of business history. The invoices contain official company seals and references to non-existent transactions. The buyer, trusting the official appearance of the documents, makes a payment for goods that never arrive.

Analysis: The deception requirement of TCK 157 is met, because the forged invoices leave the buyer no realistic way to check. Whether the charge is qualified depends on a paragraph, not on how convincing the paperwork looked. If Mehmet acted as a trader, a company manager or on behalf of a company during commercial activity, TCK 158/1-h applies; if the payment was obtained through a bank or an information system, TCK 158/1-f applies as well, with its four-year floor. If neither fits, the charge stays at TCK 157 — and the invoices themselves are a separate document-forgery offence under TCK 204 or TCK 207.

Scenario 2: A Boastful Promise

Fatih tells his friend Hassan that his sports car can hit 300 km/h, which it cannot. Hassan, impressed, buys the car from him. The car's actual top speed is 180 km/h.

Analysis: On these facts there is most likely no fraud offence at all, simple or qualified. Boasting about a car's top speed is a seller's puff — dolus bonus — and settled Yargıtay practice does not treat mere exaggeration as hileli davranış. Hassan could have test-driven the car or had it inspected, so his ability to verify was never eliminated. The dispute belongs before the civil courts, as a claim to rescind the sale for defect or misrepresentation and to recover damages under the Turkish Code of Obligations, not in a criminal file.

Scenario 3: The Forged Title Deed

Zeynep sells a property to Duygu, presenting a forged title deed. The deed appears to be officially registered with the Land Registry Office. Duygu makes the payment and later discovers the property is actually owned by a third party.

Analysis: This is qualified fraud — but because of the paragraph, not because the paper looked convincing. A forged tapu works by making the Land Registry appear to speak, so a public institution is used as the instrument of the deception and TCK 158/1-d applies. Note that a forged title deed is rarely charged alone: forgery of an official document under TCK 204 is a separate offence, prosecuted in the same file, carrying its own sentence.

Banking and Internet Fraud Under TCK 158/1-f

Paragraph (f) captures anything routed through a bank or an information system: a transfer obtained on a false pretext, a fake investment platform, a spoofed payment instruction, a crypto "fund". It is named in the last sentence of TCK 158/1, so the floor is four years and the fine at least twice the gain. That floor decides the outcome: suspension of sentence under TCK 51 stops at two years, deferral of the announcement of the judgment under CMK 231 has the same ceiling, and alternative sanctions under TCK 50 reach only short custodial sentences. Left unreduced, a paragraph (f) conviction is a sentence that gets served.

Two 2026 rules sit on top of this. CMK 128/A, added by Law No. 7571 of 24 December 2025, lets a bank, payment service provider or crypto asset service provider suspend an account itself for up to 48 hours on reasonable suspicion of an offence under TCK 158/1 (f) or (l); it must tell the prosecutor at once, you must be notified, and if you apply to lift the suspension the prosecutor decides within 24 hours. Law No. 7589 of 16 July 2026 then added TCK 158/4: where participation is limited to handing over a payment card or the credentials needed to use a bank, brokerage, payment-provider or crypto account, the sentence is halved. That is a reduction, not a defence — the account lender is still convicted, and usually examined for money-laundering exposure too.

Effective Repentance: Paying the Loss Back Under TCK 168

TCK 168 applies expressly to fraud. If the perpetrator, instigator or aider personally shows repentance and fully makes good the victim's loss — by returning what was taken or compensating it — before prosecution has begun, the sentence is reduced by up to two-thirds. After prosecution begins but before judgment, TCK 168/2 caps the reduction at one half.

The dividing line is technical and expensive to miss. Under CMK 2/1-f, prosecution (kovuşturma) starts when the court accepts the indictment, not when you are first questioned, so money paid while the file is still with the prosecutor falls in the two-thirds bracket. Partial repayment engages TCK 168/4 and counts only if the victim consents. And because the statute says "up to", the reduction is discretionary: a traceable transfer referencing the file number is worth far more at sentencing than cash the victim can later deny receiving.

Two neighbouring routes are often confused with it. TCK 159 drops the sentence to six months to one year, or a fine, and makes the offence complaint-dependent, where the fraud was committed to collect a receivable resting on a genuine legal relationship. Mediation (uzlaştırma) reaches TCK 157 through CMK 253/1-b and, because the reduced offence is complaint-dependent, reaches TCK 159 through CMK 253/1-a; TCK 158 is outside mediation altogether. In every case CMK 253/1 requires the victim or injured party to be a natural person or a private-law legal entity, so there is no mediation where a public institution is the injured party. Where mediation applies and the agreed undertaking is performed in one payment, CMK 253/19 requires a decision not to prosecute.

The Burden of Proof: How Prosecutors Must Prove "Qualified"

In Turkish fraud cases, the prosecutor must prove beyond a reasonable doubt that:

• Deceptive acts occurred (documents, statements, omissions)

• The deception objectively eliminated the victim's chance to verify — the element of TCK 157

• The victim relied on the deception

• Harm resulted and a benefit was obtained

• For qualified fraud: the facts fall within one of the lettered paragraphs of TCK 158/1

Why the Distinction Matters: Sentencing Consequences

The difference between simple and qualified fraud is not academic—it's about freedom, and about four separate consequences.

• The sentence. TCK 157: 1–5 years. TCK 158: 3–10 years, with the four-year floor for paragraphs (e), (f), (j), (k) and (l).

• The fine. Under TCK 52/2 the court sets a daily rate between 100 and 500 Turkish lira on your means, so a 5,000-day fine lands between 500,000 and 2,500,000 lira — separate from what you owe the victim.

• The court. Until 25 December 2025 qualified fraud was named expressly in Law No. 5235 art. 12, which is why these files sat with the ağır ceza mahkemesi. Law No. 7571 removed that reference, so new files are heard by the asliye ceza mahkemesi. Under Law No. 5235 art. 14 the competent court is fixed by the statutory maximum, without counting aggravating or mitigating grounds, so the increase in TCK 158/3 does not by itself move a file upwards; the ağır ceza mahkemesi becomes competent only where a connected offence such as TCK 220 is charged alongside. Under provisional article 7 of Law No. 5235, cases already pending before an ağır ceza mahkemesi on that date stay there until final judgment.

• The clock. TCK 66 gives 8 years for TCK 157 and 15 years for TCK 158, and TCK 66/3 requires the qualified forms shown by the evidence to be counted in that calculation.

Defense Strategies: Attacking the Deception, and Attacking the Paragraph

There are two independent attacks and they lead to different places. Showing that the victim kept a realistic opportunity to verify attacks the deception requirement of TCK 157 itself — if it succeeds there is no fraud offence at all, and the matter is civil. Showing that none of the lettered paragraphs of TCK 158/1 fits attacks only the qualification, and moves the charge down to TCK 157. In most files the realistic win is the second: reclassification from TCK 158 to TCK 157 changes the range from 3–10 years to 1–5, opens mediation and cuts the limitation period from 15 years to 8. If the argument fails at first instance, the istinaf appeal must be filed within two weeks of service of the reasoned judgment (CMK 273).

Strategy 1: Prove the Victim Had a Realistic Opportunity to Verify

The deception requirement of TCK 157 is met only where verification was not realistically possible. A strong defense shows that the victim could have—but didn't—verify the facts, which defeats the base offence rather than merely downgrading it.

Evidence to present:

• Documents the victim could have consulted or inspected (e.g., bank records, company registrations, public records)

• Expert testimony showing that verification was feasible (e.g., an engineer could have inspected the property)

• Communications showing the victim was advised to verify or could have asked questions

Strategy 2: Establish that the Victim Had Means and Reason to Know Better

If the victim was a sophisticated party (a seasoned investor, a business owner, a government official) with special knowledge or access to information, their lack of verification becomes more meaningful.

Evidence to present:

• Background information on the victim's professional expertise and experience

• Records showing the victim's previous involvement in similar transactions

• Proof that the victim had resources to hire experts or obtain information

Strategy 3: Challenge the Causal Connection Between Deception and Loss

Even if the deception is proved, fraud requires that the false statement directly caused the victim's financial loss. If other factors contributed to the loss, this element fails.

Example: A seller misrepresents the quality of a property, but the buyer's loss is actually due to a subsequent market crash. The deception didn't cause the loss.

Evidence to present:

• Documentation of other contributing factors (market conditions, third-party actions, the victim's own decisions)

• Financial analysis showing the victim's loss would have occurred regardless of the false statement

• Expert testimony on causation and the chain of events

When to Call a Turkish Fraud Attorney

Turkish fraud law is nuanced and subtle. The line between "a lie" and a chargeable deception, and the further line between TCK 157 and TCK 158, are not obvious to the untrained eye. If you're facing charges—or investigating a potential fraud—understanding these distinctions is crucial.

At Istanbul Attorneys, our criminal defence team works on these files in English. We can:

• Analyze whether the conduct meets the deception threshold of TCK 157 at all

• Test the indictment against the lettered paragraphs of TCK 158/1, one by one

• Gather evidence proving verification was possible

• Argue for reclassification to TCK 157 or TCK 159, and document an effective-repentance file under TCK 168

• Represent you vigorously in court, using expert witnesses and forensic evidence

Common questions about fraud charges in Turkey

What makes fraud "qualified" under Turkish law?

Two things together. The base offence in TCK 157 must be made out — deceptive conduct that misled the victim and produced a benefit at their expense — and the facts must match one of the twelve lettered circumstances in TCK 158/1, such as use of an information system or a bank, use of a public institution as the instrument, commission by a company manager during commercial activity, or posing as a bank employee or public officer. Nothing outside that list makes a fraud qualified, however serious the deception.

When is the deception serious enough to be a crime at all?

Typically where the deception rests on something the victim had no realistic way to check: forged invoices carrying company seals, a title deed that appears registered, a payment instruction that appears to come from a bank. Where the victim could simply have test-driven the car or pulled the registry extract, there is no fraud offence at all and the dispute is a civil one. Passing that test only gets you to TCK 157; the file becomes qualified only if a lettered paragraph of TCK 158/1 also fits.

What is the sentence for fraud in Turkey?

TCK 157 carries 1–5 years plus a judicial fine of up to 5,000 days. TCK 158 carries 3–10 years plus a fine of up to 5,000 days, and under paragraphs (e), (f), (j), (k) and (l) the prison term cannot start below four years and the fine cannot be less than twice the benefit obtained.

Which court hears a fraud case in Turkey?

New qualified-fraud files go to the asliye ceza mahkemesi. Until 25 December 2025 TCK 158 was named in Law No. 5235 art. 12 and heard by the ağır ceza mahkemesi; Law No. 7571 removed that reference. Under provisional article 7 of Law No. 5235, cases already pending before an ağır ceza mahkemesi on that date remain there until final judgment, and no transfer or reversal may be ordered on the ground of the change. Simple fraud under TCK 157 has always been an asliye ceza matter.

Does paying the money back get a fraud charge dropped in Turkey?

Not dropped, but cut substantially. TCK 168 allows up to two-thirds off if the loss is fully made good before the indictment is accepted, and up to one half afterwards, until judgment. For simple fraud under TCK 157, and for the reduced offence under TCK 159, a successful mediation under CMK 253 can end the file with a decision not to prosecute.

Can I be detained or stopped from leaving Turkey over a fraud allegation?

Both are possible. Fraud is not in the CMK 100/3 catalogue, so pre-trial arrest needs strong suspicion on concrete evidence plus a ground under CMK 100/2 — usually flight risk, which prosecutors argue readily against foreigners. The common alternative is judicial control under CMK 109, where a ban on leaving the country is the first measure listed; CMK 109/6 confirms that time under such a ban is not deducted from any later sentence.

My Turkish bank account was frozen after a fraud complaint. What now?

Under CMK 128/A the institution can suspend the account for up to 48 hours, must report it to the prosecutor immediately and must notify you; you can apply to have it lifted and a decision is due within 24 hours. Where funds are seized without a prior judge's decision, the seizure goes to the judge within 24 hours and the judge must rule within 48 hours of the seizure or it lapses; and where the money is shown to belong to the victim, CMK 128/A-5 allows it to be returned during the case.

Turkish fraud law demands precision, strategy, and deep legal expertise. If you're facing charges or need advice, reach out to us — and bring the indictment or the prosecutor's summons, because the paragraph number on it decides where the conversation starts.

This guide is general information on Turkish law, not legal advice on your own matter. Rules and practice change; check the position before you act.