In Türkiye, the tax system is strictly regulated in order to protect public revenues and combat the informal economy. Within this framework, the fake invoice is regarded as one of the most serious offences under Turkish tax criminal law. Commonly referred to in practice as a naylon fatura, a fake invoice constitutes not merely an administrative tax violation but a criminal offence subject to severe sanctions. At Bayraktar Attorneys, we regularly advise both individuals and corporate clients on the significant legal and criminal risks arising from allegations related to fake invoices and other tax crimes in Türkiye.
Fake invoice allegations remain, by a wide margin, the most common form of tax evasion prosecution in Türkiye, affecting businesses of every size, from small traders to large, well established companies with sophisticated compliance functions. The Turkish Revenue Administration has invested heavily in electronic invoicing, e-fatura, e-arşiv, and e-defter systems in recent years, along with automated cross checking and risk analysis tools that compare transaction patterns across taxpayers. This has meaningfully increased the speed and accuracy with which suspicious invoicing patterns are flagged, which in turn means a business can find itself under investigation, or a director can find themselves personally implicated, based on a supplier relationship they may not have fully vetted at the time, rather than only through deliberate wrongdoing of their own.
Quick Answer: Issuing or knowingly using a fake invoice in Türkiye is a criminal offence under Article 359 of the Tax Procedure Law, punishable by three to eight years of imprisonment, a sentence severe enough that these cases fall within the jurisdiction of the Heavy Penal Court and cannot be converted into a judicial fine. This is distinct from, and considerably more severe than, using a merely misleading document that reflects a genuine transaction inaccurately, which carries a lower penalty of 18 months to three years. A significant practical change took effect on 1 October 2025: the defence that a person did not know an invoice was fake is no longer accepted on its own in the way it once was, meaning anyone found to have used a fake invoice is now generally presumed to have done so knowingly, triggering the heavier tax loss penalty rather than the reduced one previously available to unknowing users.
A fake invoice is defined as an invoice issued or used for a transaction that never actually occurred. From the perspective of Turkish tax law, the essential characteristic of a fake invoice is the complete absence of a genuine commercial transaction, despite the appearance of one on paper. Such invoices are typically used to reduce the tax base, unlawfully benefit from VAT deductions, or conceal taxable income. Based on Bayraktar Attorneys' extensive experience, the proper legal qualification of the invoice, particularly the distinction between a fake invoice and a misleading document described in section 1.1 below, is often decisive in determining criminal liability, since the two categories carry meaningfully different consequences.
Turkish tax law draws a critical distinction between two categories of document offence under Article 359, and confusing the two is one of the more consequential mistakes an unrepresented taxpayer can make when assessing their own exposure. A fake document, sahte belge, under Article 359, paragraph b, is one issued for a transaction that never took place at all; there is no underlying commercial reality behind it whatsoever. A misleading document, muhteviyatı itibariyle yanıltıcı belge, under Article 359, paragraph a, by contrast, reflects a transaction that genuinely occurred, but misstates its nature or amount, for example a real sale invoiced at an inflated or understated figure. This distinction directly determines the applicable penalty range: a fake document carries three to eight years of imprisonment, while a misleading document carries a considerably lower range of 18 months to three years. Determining which category a specific invoice actually falls into is frequently the single most important question in the early stages of a defence.
The fake invoice crime in Türkiye is regulated under Article 359 of the Turkish Tax Procedure Law, Vergi Usul Kanunu, VUK, which governs tax evasion offences. Article 359 explicitly criminalises the issuance or use of fake documents and classifies such conduct as tax evasion. This provision elevates fake invoice practices from the realm of administrative penalties into the sphere of criminal law, exposing suspects to substantial prison sentences. At Bayraktar Attorneys, we observe that Article 359 is interpreted broadly in practice, which means that companies and individuals may face criminal investigations even in complex or disputed commercial arrangements. Such matters often fall within the broader category of white collar crime in Türkiye.
For an act to qualify as a fake invoice crime, certain legal elements must be present. First, there must be no genuine underlying commercial transaction. Second, an invoice or equivalent tax document must be issued or knowingly used in relation to this fictitious transaction. Third, the conduct must result in a tax loss or at least create a risk of tax loss for the public treasury. Finally, the offence requires intent, meaning that the act must be committed knowingly and willingly. Tax inspection reports and findings prepared by tax auditors play a central role in establishing these elements during criminal proceedings.
The question of intent described above has become considerably more consequential in practice since 1 October 2025, when a change in tax audit practice altered how the defence of not knowing an invoice was fake is treated. Previously, a taxpayer who could show they genuinely did not know a supplier's invoice was fictitious was generally subject to a reduced tax loss penalty, calculated at one times the tax loss, rather than the heavier penalty applied to knowing use. Since this change, a taxpayer found to have used a fake invoice is now generally presumed to have done so knowingly, triggering the heavier tax loss penalty of three times the tax loss, and the burden of genuinely establishing a lack of knowledge has become considerably more difficult to satisfy on this defence alone. This shift makes early, careful factual investigation into how a specific invoice came to be recorded, and what due diligence, if any, was performed on the counterparty at the time, more important than ever for anyone facing this type of allegation.
The penalties for fake invoice crime in Türkiye are among the most severe sanctions imposed under Turkish tax criminal law. Pursuant to Article 359, paragraph b, of the Tax Procedure Law, individuals who issue or knowingly use fake invoices may face imprisonment ranging from three to eight years. In addition to criminal penalties, the tax authorities may impose tax assessments, tax loss penalties, administrative fines, and late payment interest through separate administrative procedures. Bayraktar Attorneys emphasises that acquittal in criminal court does not automatically eliminate tax penalties imposed under administrative law, as these processes operate independently of one another and can reach different conclusions on the same underlying facts.
Where the offence is committed as part of an organised scheme, for example through a coordinated network of businesses systematically issuing fake invoices to one another or to third parties, the applicable sentence can be increased by half, resulting in a range that can extend up to twelve years. Where fake invoices are issued or used across different tax years, or on multiple separate occasions within the same year, the offence is generally treated under the chain offence provisions of Turkish criminal law, resulting in an increased overall sentence compared with a single isolated act.
Because the maximum penalty under Article 359, paragraph b, reaches eight years, cases of this kind fall within the jurisdiction of the Heavy Penal Court, Ağır Ceza Mahkemesi, rather than a lower court. Given the severity of the applicable sentence range, courts have consistently held that a custodial sentence handed down under this provision cannot be converted into a judicial fine, a limitation that does not apply in the same way to many less serious offences, and underscores how seriously this specific offence is treated within the broader Turkish criminal justice system.
Turkish law provides a specific active repentance mechanism for this offence that can substantially reduce the ultimate sentence, and this is one of the more important practical tools available to a defendant facing a credible allegation. Where the underlying tax principal, along with related amounts, is paid before a criminal investigation formally begins, the sentence can be reduced by half. Where payment instead occurs after a case has already been filed but before a final judgment is rendered, a smaller, though still meaningful, reduction of around one third is generally available. Because the size of this reduction depends heavily on timing, taxpayers who become aware of a potential fake invoice exposure, whether through their own review or an early stage audit, should treat prompt engagement with counsel and, where appropriate, prompt payment, as a genuine strategic decision rather than an afterthought.
With respect to tax crimes in Türkiye, criminal liability is not limited solely to the individual who physically issues the invoice. In practice, company directors, shareholders, accountants, certified public accountants, and other professionals who knowingly participate in or benefit from fake invoice schemes may also be held criminally liable. Furthermore, legal entities may be subject to security measures and administrative sanctions separate from the personal criminal liability of the individuals involved. At Bayraktar Attorneys, we attach particular importance to the individualised assessment of liability and the precise determination of intent in such cases, since criminal liability under this provision is personal, and a company's own exposure to administrative tax penalties does not automatically translate into criminal liability for every individual connected to that company.
Criminal proceedings related to fake invoice offences are conducted in accordance with the Turkish Code of Criminal Procedure, CMK. These cases typically begin with a tax audit, followed by the issuance of a tax crime report and its submission to the public prosecutor. If sufficient suspicion exists, a public prosecution is initiated and the case is heard before the Heavy Penal Court described in section 3.2 above. Although tax audit reports constitute significant evidence, judges are not strictly bound by these reports and can reach a different conclusion based on the fuller evidentiary record developed during the criminal proceeding itself. Based on our practice at Bayraktar Attorneys, an effective defence strategy at this early stage, well before matters reach trial, can decisively influence the eventual outcome of the case.
The indictment in a typical fake invoice case generally sets out the specific invoices at issue, their dates and amounts, the identities of the issuing and using parties, a narrative explanation of how the alleged scheme is said to have operated, and the specific statutory provisions relied upon. Because these cases often involve a substantial volume of individual invoices spanning multiple tax periods, a significant part of an effective defence involves carefully working through this documentation to identify which specific transactions, if any, genuinely reflect real commercial activity, rather than treating the indictment as a single, undifferentiated allegation.
Tax crimes in Türkiye, particularly those involving fake invoices, pose not only criminal risks but also serious commercial and reputational consequences for companies. Allegations of fake invoice usage may negatively affect a company's financial standing, banking relationships, commercial credibility, and eligibility for public tenders. Companies should also be aware of the role of MASAK, Türkiye's financial intelligence unit, in monitoring suspicious financial activity connected to these schemes. For this reason, early legal intervention by experienced counsel is essential when facing tax audits or criminal allegations related to fake invoices, ideally well before a formal tax crime report has been finalised and submitted to the prosecutor.
Given how broadly Article 359 is applied in practice, and how significantly the 2025 change to the knowledge presumption has raised the stakes for unknowing counterparties, businesses are generally well served by treating supplier due diligence as a genuine compliance function rather than a formality. This can include confirming that a new supplier has an active, legitimate business presence rather than existing only on paper, retaining documentation supporting the physical delivery of goods or genuine performance of services behind each significant invoice, and reviewing unusually large or unusual pattern transactions with a supplier before they are recorded, rather than only after a tax audit has already begun. Businesses that maintain this kind of documented practice are generally in a considerably stronger position to demonstrate good faith if a supplier later turns out to have been involved in fraudulent invoicing without the business's own knowledge.
Three to eight years of imprisonment under Article 359, paragraph b, of the Tax Procedure Law, with the sentence potentially increasing to as much as twelve years where the offence was committed as part of an organised scheme.
A fake invoice reflects a transaction that never happened at all, carrying a three to eight year penalty. A misleading document reflects a genuine transaction but misstates its nature or amount, carrying a lower penalty of 18 months to three years.
It has become considerably harder to rely on since 1 October 2025. A taxpayer using a fake invoice is now generally presumed to have done so knowingly, and successfully establishing genuine lack of knowledge requires a much stronger factual showing than it once did.
The Heavy Penal Court, Ağır Ceza Mahkemesi, given that the maximum applicable sentence reaches eight years.
No. Courts have consistently held that a custodial sentence under Article 359, paragraph b, cannot be converted into a judicial fine, unlike many less serious offences.
Yes, potentially significantly, through the active repentance mechanism. Paying the tax principal and related amounts before a criminal investigation begins can reduce the sentence by half, and paying after a case has been filed but before judgment can still result in a reduction of around one third.
Yes, potentially. Accountants, certified public accountants, and other professionals who knowingly participate in or benefit from a fake invoice scheme can face criminal liability alongside company directors and shareholders.
Not automatically. Criminal proceedings and administrative tax penalty processes operate independently, and a criminal acquittal does not by itself eliminate separately assessed tax penalties.
This is generally treated under chain offence provisions, which can result in an increased overall sentence compared with a single, isolated instance of the offence.
No. While tax audit reports constitute significant evidence, the judge is not strictly bound by their findings and can reach a different conclusion based on the full evidentiary record developed during the criminal case.
Yes. Legal entities can be subject to security measures and administrative sanctions in addition to the personal criminal liability of the individuals found responsible.
MASAK, Türkiye's financial intelligence unit, monitors suspicious financial activity, which can include patterns connected to fake invoice schemes, and its findings can feed into broader investigations.
Generally three times the tax loss for knowing use, a rate that now applies more broadly following the 2025 change to how the knowledge element is assessed, compared with a reduced rate previously available in genuine cases of unknowing use.
Engage legal counsel promptly to assess your specific situation, since the timing of any voluntary correction and payment can significantly affect the available active repentance reduction, and early, well documented action is generally far more effective than waiting for a formal audit to begin.
At Bayraktar Attorneys, we provide comprehensive legal representation and strategic advice in matters involving fake invoices, penalties for fake invoice crime in Türkiye, and broader tax crimes in Türkiye. From the tax audit stage through criminal investigation and trial, our objective is to protect our clients' rights and minimise potential criminal exposure, including through the active repentance mechanisms described above where the specific facts of a case support this approach. Fake invoice allegations are not merely financial disputes; they are serious criminal matters that may result in imprisonment, making professional legal representation indispensable from the earliest possible stage.
