Disputes arising in the field of tax law are resolved within the scope of administrative jurisdiction and involve numerous rules and procedures unique to this area. In particular, the operation of tax litigation is highly technical and complex, and it differs in several respects from other administrative cases. This process is regulated primarily under the Law on Administrative Judicial Procedure No. 2577; moreover, special provisions concerning tax litigation are also found in other legislation such as the Tax Procedure Law No. 213 and the Law on the Procedure for the Collection of Public Receivables No. 6183. Taxpayers (especially companies) may seek judicial remedy against tax assessments, penalties, or other tax-related administrative actions they consider unjust or unlawful.
This article addresses the main stages of the litigation process, starting from the filing of a tax lawsuit and extending to legal remedies after judgment. It also explains critical points such as a sample petition framework, the burden of proof and evidence system, stay of execution, and post-decision appeal mechanisms. The aim is to provide an informative guide and to draw attention to potential challenges so that taxpayers (particularly corporate taxpayers) can act without suffering any loss of rights.
Filing a Tax Lawsuit
In tax law, filing a lawsuit is the judicial remedy available to taxpayers against actions of the tax administration. A lawsuit is typically filed against a tax/penalty assessment notice, a payment order, or a similar administrative action issued against the taxpayer. The lawsuit may be filed by the taxpayer personally (whether an individual or a legal entity) or by the taxpayer’s attorney. For legal entities and persons under legal incapacity, these actions are carried out through their legal representatives. Although the tax office may, in certain exceptional circumstances (for example, against decisions of assessment commissions), have the right to bring actions, it does not file a tax lawsuit directly against the taxpayer as a general practice.
Competent and Authorized Corut: As a rule, tax cases are filed before Tax Courts. The authorized tax court is determined based on the location of the tax office that carried out the tax action subject to the case. For instance, the Ankara Tax Court is competent for a tax penalty issued by the Başkent Tax Office located in Ankara. However, it should be noted that lawsuits seeking annulment of regulatory administrative acts applied nationwide by the Ministry are heard at first instance by the Council of State (Danıştay).
Time Limits For Filing: To file a tax lawsuit, it is mandatory to act within the statutory time limits. Under the Law on Administrative Judicial Procedure (LAJP), the general time limit for filing a lawsuit before tax courts is 30 days. This period starts from the day following the date on which the tax/penalty notice is served on the taxpayer. In addition, different time limits apply in certain special situations:
- Against tax and penalty assessment notices: A lawsuit must be filed within 30 days from the date of service. For example, if a tax penalty imposed on your company is served, and no lawsuit is filed within 30 days following service, the penalty becomes final.
- Against collection measures such as payment orders and precautionary attachment: The objection period for such collection measures may be shorter (e.g., 15 days), and an objection must be filed within 15 days from service. For example, if you will object to a payment order, the 15-day period must be observed carefully.
- Against regulatory acts (regulations, communiqués, etc.): An annulment action may be filed within 60 days. This period begins on the day following the publication of the act. If the regulatory act did not directly affect the person but was later applied to them, a lawsuit may still be filed within 60 days from the date of application.
Unless otherwise stipulated by special laws, these time limits apply; missing them results in the loss of the right to sue. Therefore, it is crucial for taxpayers to calculate service dates accurately and not to miss deadlines. For companies in particular, monitoring these deadlines amid intensive official correspondence is critical, as missing a filing period may lead to serious loss of rights.
Administrative Applications and Settlement: In certain cases, taxpayers may attempt administrative remedies before filing a lawsuit. For example, it is possible to request settlement in tax penalties. A settlement request does not suspend the filing period; however, if settlement is not achieved, a lawsuit may be filed within the remaining time. If, at the end of the settlement process, fewer than 15 days remain, the law grants an additional 15 days. Accordingly, if settlement negotiations were held but no agreement was reached, the taxpayer must promptly file the lawsuit by taking into account the remaining period or the additional period. Similarly, if administrative objection or correction requests are not concluded within the lawsuit filing period, judicial remedies must be pursued without delay.
Sample Elements of a Tax Lawsuit Petition
Tax lawsuits are cases where procedural deficiencies are examined meticulously; sometimes, even a single word or digit can be decisive. When filing a tax lawsuit, it is necessary to submit a petition prepared in compliance with procedural requirements and with due diligence. The petition forms the backbone of the case; because tax cases are often examined on the file without a hearing, the arguments and explanations set out in the petition may determine the outcome. Using standard, generic petitions with boilerplate wording may lead to serious loss of rights. Therefore, the petition must be carefully prepared and tailored to each specific case.
A tax lawsuit petition generally should include the following key elements:
- Court: The petition is addressed to the competent and authorized Tax Court (e.g., “To the Ankara Tax Court”).
- Plaintiff: The taxpayer’s name and surname (or company name), Turkish ID number / Tax ID number, and address.
- Defendant: The defendant administration, typically the relevant tax office directorate or the institution to which the tax administration is affiliated; name and address.
- Subject Matter: A summary of the request. For example: “This petition concerns our request for annulment of the tax/penalty notice dated … and numbered …” or “Regarding our request for removal of the unlawfully accrued tax and tax penalty.”
- Type and Amount of Tax: The type of tax in dispute (VAT, corporate tax, etc.) and, if applicable, the exact amount of the tax penalty.
- Date of Service: The date on which the relevant official document was served on the taxpayer (important for calculating time limits).
- Statements / Explanations: Detailed description of the dispute. The taxpayer’s allegations and grounds must be explained within the context of the specific case. This is the most important part of the petition and must be prepared with utmost care. It should clearly set out why the tax assessment or penalty is unlawful and which actions are erroneous or unjust. Because proceedings are largely file-based, all defenses and allegations must be presented fully in this section.
- Legal Grounds: The applicable legal provisions and relevant legislation (e.g., relevant articles of the Tax Procedure Law, LAJP provisions, and, where necessary, constitutional or international norms).
- Evidence: The evidence supporting the allegations (e.g., tax audit reports, inspector reports, books and records, correspondence, witness statements (if any), etc.), listed one by one. Where possible, it should be explained which evidence proves which fact.
- Conclusion and Request: The plaintiff summarizes the request. For example: “We request annulment of the unlawful assessment, refund of any amounts collected, and that litigation costs be borne by the defendant administration.” This section varies depending on the nature of the case; for example, if only a penalty is challenged, annulment of the penalty is requested; in payment order cases, determination that no debt exists may be requested.
- Signature: Signed with wet signature or electronic signature.
As seen above, a tax lawsuit petition should include information about the plaintiff and defendant, the type and amount of tax, a summary of the dispute, detailed legal explanations, legal grounds, evidence, and the final request. The “Statements” section, in particular, should not be drafted casually; it must be carefully adapted to the facts, because the court will obtain all information from this text in non-hearing proceedings. If necessary, consulting a specialized tax law attorney during preparation is the most appropriate approach to prevent loss of rights arising from omissions or errors.
Burden of Proof and Evidence in Tax Litigation
The burden of proof and the evidence system are essential components of tax adjudication. The fundamental principle in tax law is that the true nature of the taxable event prevails, and it may be proven by any means of evidence except for an oath. Pursuant to Article 3/B of the Tax Procedure Law No. 213, even if the true nature of transactions related to the taxable event differs from their formal appearance, the true situation is investigated and may be proven by any kind of evidence; however, an oath cannot be used as evidence in tax cases. In addition, witness testimony that does not have a natural and clear connection with the taxable event cannot be accepted as standalone evidence. In other words, for a witness statement to be considered, the witness must have direct relevance to the event or concrete knowledge about it.
The Turkish tax system is based on declarations, and the principle of freedom of evidence applies in tax disputes. Accordingly, any information or document suitable for resolving the dispute may be submitted as evidence. Common types of evidence include: statutory books and records of the company, accounting documents (invoices, receipts), tax audit reports, expert legal opinions, expert witness reports, counter-audit findings, witness statements (from persons relevant to the event), administrative correspondence, service notifications, and similar documents. For example, if a tax audit report prepared regarding a company lacks concrete grounds, this may constitute a significant defense tool; in such a case, the company may prove the contrary using documents evidencing the accuracy of its records. While duly kept books and records are generally considered reliable evidence, if the administration alleges that they do not reflect reality, it is expected to present concrete proof.
Regarding allocation of the burden of proof, the Tax Procedure Law sets out a particular rule: the party asserting an unusual situation or a claim contrary to the ordinary course of life bears the burden of proving it. This rule applies to both the taxpayer and the tax administration. For instance, if the administration claims that a company is not genuinely operating and that all its invoices are fictitious, the burden of proof for this extraordinary allegation lies with the administration; it must establish this through concrete findings and evidence. Conversely, if the taxpayer asserts that an expense that would not ordinarily be accepted is deductible, the burden of proof lies with the taxpayer. In short, in tax disputes, the principle of “whoever alleges must prove” applies. In tax adjudication where the judge has discretion to evaluate evidence freely, parties should support their positions with as strong and solid evidence as possible. For companies in particular, maintaining transactions and records properly and with supporting documentation from the outset provides the greatest advantage in potential future litigation.
For this reason, working with an attorney within the scope of preventive legal services can help prevent substantial tax penalties and lawsuits that may arise later. At Bektaş Law Office, we minimize our clients’ risks through preventive legal services and resolve potential disputes before they even arise. To secure comprehensive legal protection for your company in the field of tax law, you may contact our expert team.
Request for Stay of Execution in Tax Cases
A stay of execution is the temporary suspension of an administrative act during the litigation period. In tax cases, a stay of execution typically means that collection and penalty enforcement are suspended until the case is concluded. There is an important difference in tax law: as a rule, lawsuits filed before tax courts automatically suspend collection. Pursuant to Article 27/4 of the LAJP, upon filing a lawsuit arising from a tax dispute, collection procedures regarding the disputed tax and penalties are suspended automatically. Therefore, for example, if a taxpayer files a lawsuit in due time against a tax/penalty assessment notice, collection is generally not carried out for the disputed amount even without a separate request for stay of execution. Consequently, it is not strictly necessary to include a “request for stay of execution” in petitions filed against tax/penalty notices, as collection is suspended by operation of law. Nevertheless, in our view, there is no harm in explicitly requesting a stay of execution in the petition; therefore, it may be prudent to request it as a precaution.
However, this automatic suspension rule has exceptions. Not every tax case automatically suspends enforcement. In particular, lawsuits filed against collection measures (such as payment orders, seizure measures, precautionary attachment, or requests for security) do not suspend collection by mere filing. In such cases, the taxpayer must expressly request a stay of execution; otherwise, the tax office may continue collection measures while the case is pending. For example, if a company files a lawsuit against a precautionary attachment, the attachment will not be suspended unless the court grants a stay of execution. Likewise, in cases concerning taxes paid based on the taxpayer’s own declaration (such as lawsuits filed after submitting a return “with reservation”), filing the lawsuit does not suspend the fact that payment has already occurred; to recover the paid amount, the taxpayer must either request a stay of execution or wait for a favorable final decision.
Another critical issue arises in later stages of the process. If the first-instance tax court rules in favor of the taxpayer, the assessment is annulled and the issue is resolved. However, if the tax court dismisses the case, the collection procedures that were automatically suspended start operating again. In that event, the taxpayer may file an appeal to the Regional Administrative Court; however, filing an appeal or a further appeal does not, by itself, suspend enforcement. In other words, even if the taxpayer applies to the appellate court, collection may proceed. At this point, the taxpayer must request a new stay of execution from the Regional Administrative Court or obtain a stay of enforcement (tehir-i icra) to submit to the enforcement file. The law generally conditions stay decisions at higher instances on certain requirements, especially the provision of security. In practice, taxpayers may request a stay of execution at the appeal stage by providing security in an amount deemed appropriate by the court, thereby suspending collection until the appeal review is concluded.
A significant recent development was introduced for refund-claim tax cases and was later annulled by the Constitutional Court. According to the provision added to Article 27 of the LAJP by Law No. 7351 dated 19.01.2022, courts could not grant a stay of execution in lawsuits filed by taxpayers for tax refunds unless they obtained security amounting to 50% of the disputed sum. This measure was introduced as a safeguard against the risk of unjust refunds. Under the statutory text, a stay of execution could not be granted without collecting security equal to 50% of the amount in dispute. However, the Constitutional Court later annulled this sentence by its decision numbered E.2022/14, K.2022/70 (01.06.2022). The decision was published in the Official Gazette dated 07.07.2022, numbered 31889. As can be seen, sentences added to laws and their subsequent annulment directly affect tax cases filed during the period in which the new rule is in force. For this reason, obtaining support from a professional who is knowledgeable in tax legislation and who also follows up-to-date amendments is of vital importance. At Bektaş Law Office, we closely follow tax laws, secondary legislation, and current developments, and provide comprehensive legal protection to our clients.
In summary, the stay of execution mechanism is critical for protecting taxpayers from irreparable harm in tax disputes. Although filing a lawsuit often suspends collection automatically, it is safer not to assume this in every case and, where necessary, to request a stay of execution explicitly. Especially in high-value tax debts, obtaining a stay of execution is vital for companies to manage financial risks during litigation.
Legal Remedies Against the Judgment
A judgment rendered at the end of a tax case may not always be final and binding on the parties. In our legal system, legal remedies allow first-instance decisions to be reviewed by higher judicial authorities. In tax litigation, the taxpayer or the administration may, subject to certain conditions, apply for appellate review of first-instance decisions. However, not every decision is open to legal remedies; in some cases, tax court decisions are final and cannot be appealed. Below is an overview of the ordinary legal remedies in tax cases: appeal and further appeal.
1. Appeal (Regional Administrative Court)
The first higher court to which a tax court decision may be brought is the Regional Administrative Court. The parties may file an appeal within 30 days from the day following service of the decision. By submitting an appeal petition to the relevant regional administrative court, the party requests review of the first-instance decision both legally and factually. The Regional Administrative Court examines whether the decision is lawful. If deemed necessary, it may hold a hearing or decide based on the file. As a result, it may either uphold the first-instance decision and finalize the case, or set it aside and render a new decision on the merits. However, the law closes the appeal route for very small-amount cases. For 2026, this threshold is TRY 55,000. This monetary limit is increased annually in line with the revaluation rate. It should also be noted that, due to the current regulation under Additional Article 1 of the LAJP, the relevant threshold for appeal/further appeal is determined based on the date the lawsuit is filed.
2. Further Appeal (Council of State / Danıştay)
The next remedy against a decision of the Regional Administrative Court is further appeal before the Council of State (Danıştay). A further appeal may be filed within 30 days from service of the appellate decision. The Council of State conducts a legal review of whether the Regional Administrative Court’s decision contains any unlawfulness. As a result of its review, it may uphold, reverse, or in certain cases uphold with correction. There is also a monetary threshold at this stage. For 2026, this threshold is TRY 1,661,000. This amount is likewise increased annually. Accordingly, for disputes below this amount, the Danıştay route is closed and the Regional Administrative Court’s decision becomes final. Additionally, in certain cases the Council of State serves as a court of first and last instance (such as cases filed against nationwide regulatory acts). In such cases there is no further appeal stage; however, other procedures may apply, such as objection before the Council of State Plenary Session of Administrative Law Chambers.
If the Regional Administrative Court decision is not open to further appeal, the case becomes final upon service of the decision. If further appeal is available and an application is filed before the Council of State, the Council of State’s decision is final. With the Council of State’s decision, the ordinary tax litigation process is completed. Extraordinary legal remedies (such as retrial or appeal in the interest of law) may theoretically exist, but they are applied only in exceptional circumstances.
Once the decision becomes final, the tax litigation process ends. Both the administration and the taxpayer must comply with a finalized judgment. If the judgment becomes final in favor of the taxpayer, the unlawful assessment is annulled and any amounts collected are refunded. If the judgment becomes final against the taxpayer, collection procedures that were stalled due to the lawsuit resume; unpaid taxes are accrued and collected together with default surcharges.
Assessment and Conclusion
The tax litigation process is a highly technical process filled with procedural details and may lead to serious consequences for taxpayers. From calculating the filing deadline and preparing a proper petition, to substantive objections and procedural deficiencies, from collecting evidence to requests for stay of execution, and finally to tracking legal remedies—each stage requires attention and expertise. Especially for companies facing high-value tax assessments and penalties, mistakes in this process may lead to significant financial liabilities. For example, missing the filing deadline may cause an unlawful assessment to become final; incomplete or erroneous petitions and evidence may result in losing a case that would otherwise be won.
In light of these considerations, obtaining professional support in tax law disputes is highly important. Therefore, taxpayers (particularly companies) who encounter a tax dispute should consult an experienced tax law attorney from the outset in order to manage the process correctly and prevent potential risks. The technical and procedural nuances of tax litigation can, in most cases, be effectively handled only by attorneys experienced in this field.
In conclusion, managing the litigation process in tax law consciously and on time directly affects taxpayers’ financial rights and obligations. The issues addressed in this article provide a general framework—both informative and practical—on how to act in the event of a tax dispute. It should be borne in mind that each dispute has its own specific conditions, and obtaining tailored legal advice when necessary is the most reliable approach. If you are experiencing a tax-related dispute and are considering judicial remedies, you may contact Bektaş Law Office (Tax Law Attorney) and reach our expert team.
