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Tax Law and Tax Disputes

Individual Application to the Constitutional Court in Tax Disputes

An open law book, an application file, a pen and scales of justice; a scene representing an individual application in a tax dispute.
Author: Published: About 11 min read

Summary

In a tax dispute, an individual application to the Constitutional Court is an exceptional route that allows an allegation of a violation of a fundamental right to be examined after ordinary judicial remedies have been exhausted. An allegation that the tax calculation or the court decision is wrong is not sufficient on its own. The applicant must explain what specific violation has occurred with respect to the right to property, access to a court, a reasoned judgment or another constitutional safeguard. The general application period is thirty days from learning of the final decision.

The complaint of trial within a reasonable time must be assessed separately. In the current system, the Compensation Commission (Tazminat Komisyonu) route is important for this complaint. An application to the Commission and an application to the Constitutional Court for other fundamental-rights allegations are not subject to the same period or the same scope of review. It should not be assumed that using one route automatically stops the period for other complaints.

In what situation can a tax case be the subject of an individual application?

Article 148 of the Constitution and Law No. 6216 provide the possibility of application for rights within the common sphere of protection of the Constitution, the European Convention on Human Rights and the additional protocols to which Türkiye is a party, where they are alleged to have been violated by public authority. The existence of a tax act does not mean an automatic violation. The legal basis of the interference, its foreseeability, its purpose and its proportionality are assessed in the specific case.

The alleged violation must be personal, current and direct. Being disturbed by general tax policy or criticizing the outcome in another taxpayer’s file is not sufficient. As a rule, the relevant administrative and judicial remedies must be used first. An abstract individual application cannot be made directly against a statutory provision without establishing a link between a personal act and a rights violation.

Private-law legal entities may apply on the allegation that rights belonging to the legal entity have been violated. If the addressee of an assessment made in the name of a company is the company, the shareholder’s merely being a shareholder is not sufficient for the company’s application to be made in his or her own name. By contrast, a separate payment order or attachment directed at the personal assets of a shareholder or legal representative may require assessment with respect to his or her own rights.

This distinction is not merely a matter of writing the applicant’s name. The litigation route to be exhausted, the explanation of damage and the redress sought also differ. In an application that attaches the company’s decision but speaks of loss to personal assets, the direct-victim link may remain incomplete. The authority of representation and the company’s current legal status must also be documented.

How is the right to property raised in a tax dispute?

Disputes concerning tax, penalties, collection measures or refund receivables may constitute an interference with the right to property. However, taxation is a legitimate instrument for financing public expenditure, and the State is allowed a certain margin of appreciation. Instead of merely stating that the amount paid is high, the application should explain why the interference lacks a statutory basis, is unforeseeable or is disproportionate.

Lawfulness and foreseeability

The basis of the tax burden must be accessible and foreseeable. The applicant should make concrete the rule in force at the date of the act, the administration’s interpretation and the allegation of departure from settled practice. Merely proposing a different interpretation of the law does not of itself demonstrate a constitutional violation. The administration’s strong counter-view may be that the taxation has a clear statutory basis and foreseeable application.

The Constitutional Court’s decision of November 12, 2014, Application No. 2014/6192, concerning the Türkiye İş Bankası A.Ş. application, is an example of lawfulness and foreseeability in the tax field being assessed within the right to property. The decision deals with the conditions in the context of the taxation of certain contribution payments. It cannot be inferred that every subsequent assessment or every change of interpretation will automatically produce the same result.

Proportionality and concrete damage

In a proportionality claim, the scope and duration of the interference and the burden it places on the person should be explained. For example, if the effect of freezes continuing on different accounts for the same debt is alleged, the amount of the debt, the attachment records and the requests for lifting should be added to the file. By contrast, the sentence "my business suffered" alone does not form a sufficient factual basis for constitutional assessment. The redress routes the applicant has used and the administration’s reply are also important.

Access to a court and the right to a reasoned judgment

A complaint of access to a court may arise, for example, through the unforeseeable and excessively formalistic application of a time limit or an application condition. However, not every rejection on grounds of time is a violation. What is assessed is when the applicant learned, which procedure he or she followed and whether he or she showed the necessary diligence. A time limit missed through one’s own negligence does not become a constitutional violation merely because it causes a loss of rights.

The right to a reasoned judgment likewise does not require the court to respond separately to every sentence. The essential question is whether the decisive claim, of a nature capable of changing the outcome of the case, was assessed with relevant and sufficient reasoning. The application should show in which section of which petition the claim was raised and why it remained unanswered in the decision.

It would not be correct to say that the right to a fair trial is not applied in full to tax disputes. The Constitutional Court has assessed administrative and tax proceedings within its own constitutional approach. The scope approach of the ECtHR regarding certain purely tax disputes should not be carried over to Constitutional Court applications without explanation. The features of tax penalties, collection measures and other disputes are also examined separately.

How are ordinary remedies exhausted?

The applicant must use, in due form, the effective and accessible ordinary remedies that could redress the violation. The tax court, the regional court of appeal (istinaf) and the appeal on points of law (temyiz) are not present in the same order in every file; the monetary threshold, the type of decision and the transitional provisions affect which route is open. Resorting to a closed remedy against a decision that is final by law is not a safe method of preserving the Constitutional Court period.

The substance of the complaint of a rights violation should, as far as possible, be raised before the lower courts. A claim stated for the first time only in the Constitutional Court form, and not put before the assessment of the lower courts, may create a problem with respect to the exhaustion requirement. What matters here is not necessarily that every article of the Constitution be written in the petition, but that the factual and legal substance of the complaint is set out.

Nor can it be said that extraordinary remedies or a renewed application to the administration must be exhausted in every case. Whether a new application is effective and its effect on the period must be assessed separately. In particular, it should not be thought that in a dispute that has become final, repeated requests will restart the thirty-day period.

From what date does the thirty-day period begin?

Within the framework of Law No. 6216 and the Rules of Procedure of the Constitutional Court, the general period is thirty days. In practice, actual learning of the final decision may be important. For this reason, it should not be assumed in every file that only the official date of notification will be used. Records such as the applicant’s or the lawyer’s access to the decision through UYAP may be examined with regard to the date of learning.

In the file, the date of the decision, the date of UYAP access, the electronic notification record and other facts of learning should be recorded separately. Which of these started the period is assessed legally. Where the content of the decision was known for the purpose of preparing the earlier appeal petition, relying on a later notification may be risky.

If it was not possible to apply within the time limit because of a valid excuse, there is the possibility of applying within fifteen days from the removal of the excuse and with documents showing the excuse. Acceptance of the excuse is not automatic. General workload or late preparation of the file are not reasons assumed to be accepted as a valid excuse on their own.

The Compensation Commission route for the reasonable-time complaint

Within the framework of Article 5/A of Law No. 6384 and the current arrangement established by Law No. 7499, an application can be made directly to the Compensation Commission on the allegation that proceedings were not concluded within a reasonable time. This application can be made while proceedings are ongoing or, at the latest, within one month of learning that they have been concluded by a final decision. The one-month period should not be treated as identical to the thirty-day Constitutional Court period.

The Commission’s decision and the statutory objection route against it matter in the exhaustion assessment for the reasonable-time complaint. An objection against the Commission’s decision can be made to the Ankara Regional Administrative Court within fifteen days of notification. Different provisions for earlier applications within the transitional scope should be examined separately.

An application to the Commission for the reasonable-time complaint does not automatically stop the Constitutional Court period for the property or reasoned-judgment claim in the same tax case. The complaints should be handled with separate calendars. It should also be remembered that the Commission is not a higher tax court that would annul the assessment on the substance of the tax.

What documents should an individual application file contain?

The current application form, the explanations and the annexes must be consistent with one another. Through the practice launched by the Constitutional Court on October 1, 2025, lawyers can also make individual applications via the UYAP Lawyer Portal. The possibility of electronic application does not remove form and document obligations. It should be checked that any fee or legal-aid request, authority of representation and application records are complete.

File componentWhat should it show?
Act and court decisionsThe subject of the interference and the judicial process
Notification and learning recordsThat the application is within time
Earlier petitionsThat the complaint was raised before the ordinary authorities
Tax, payment and attachment recordsPersonal effect and concrete interference
Explanation of the violationWhich right was violated and for what reason
Redress and damage documentsThe basis of the result sought

Attaching hundreds of pages to the application form does not substitute for a missing explanation. The events should be summarized chronologically, and each rights claim should be tied to the relevant decision and document. Data of third parties unrelated to the application and unnecessary sensitive information should be removed. The annexes must be legible and complete, and the document names must match their contents.

Does an application to the Constitutional Court stop collection, and what does a violation decision provide?

An individual application does not automatically stop tax collection or attachment. The Constitutional Court’s interim-measure mechanism is tied to narrow conditions such as a serious danger to life or to material and moral integrity; an ordinary claim of financial loss does not secure an automatic measure. The appropriate interim protection routes in tax litigation should be assessed separately.

If the Constitutional Court finds a violation, it decides under Article 50 of Law No. 6216 on the redress of the violation and its consequences. In a violation arising from a court decision, retrial, compensation if the conditions are met, or other redress may come into question. A violation decision does not directly mean a tax refund of a specific amount in every file. The scope and implementation of the judgment should be monitored separately.

Conclusion

The foundation of an individual application in a tax dispute is to separate an ordinary appeal objection from a constitutional complaint. The applicant’s standing, exhaustion of effective remedies, the date of learning and a concrete explanation of the violation should be assessed together. The Commission route for the reasonable-time complaint and the other Constitutional Court complaints should be followed separately. An orderly file contains not only the final decision but all the records needed to show why and how the right was violated.

Frequently Asked Questions

Can everyone who loses a tax case ask the Constitutional Court for a review?

An unfavorable decision alone is not sufficient; a concrete fundamental-rights violation and the admissibility conditions are required. See the section "In what situation can a tax case be the subject of an individual application?". Related explanation

Is the Constitutional Court application period calculated only from notification?

Actual learning may have occurred earlier. The section "From what date does the thirty-day period begin?" explains the distinction between UYAP and notification records. Related explanation

Does one go directly to the Constitutional Court for a long-running tax case?

In the current system, the Compensation Commission route and exhaustion of the statutory objection should be assessed. The section "The Compensation Commission route for the reasonable-time complaint" contains the application calendar. Related explanation

Is an attachment lifted when an application is made to the Constitutional Court?

No. The application does not provide an automatic stay or lifting. The section "Does an application to the Constitutional Court stop collection, and what does a violation decision provide?" separates interim measures from redress. Related explanation

Sources

1. Constitution of the Republic of Türkiye, Arts. 35, 36 and 148; Law No. 6216, Arts. 45–50; access to official legislation of the Constitutional Court. Link to source

2. Rules of Procedure of the Constitutional Court, in particular Arts. 59, 64 and 73. Link to source

3. Constitutional Court, Türkiye İş Bankası A.Ş., Application No. 2014/6192, 12.11.2014. Link to source

4. Constitutional Court, Right to a Fair Trial decision summaries; tax disputes and scope explanations. Link to source

5. Compensation Commission Presidency, field of duty and time limits after Law No. 7499. Link to source

6. Law No. 6384, in particular Arts. 5/A and 7; official legislation text. Link to source

7. Constitutional Court, announcement of applications via the UYAP Lawyer Portal. Link to source

AUTHOR

Av. Umut Güneş

Güneş & Güneş Law Firm

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