Administrative and Tax Law

Expert Legal Support in Administrative and Tax Law in Ankara, Istanbul, and Antalya

Legal disputes with government institutions are among the processes in which individuals and companies are caught most unprepared. Facing an unlawful administrative decision, an unjust tax assessment, or a procedural penalty — if the right legal steps are not taken in time — can turn into permanent loss of rights.

The time limits in administrative and tax law are extremely strict. The deadline for filing a case before administrative courts is 60 days, and before tax courts it is only 30 days. Since these deadlines run from the date of notification, delaying legal support can itself be a cause of loss of rights. As of 2026, with the widespread adoption of the e-notification system and the increase in digital tax audits, monitoring these deadlines has become even more critical.

As Keleş Law and Consultancy Office, we provide litigation and dispute resolution services before administrative courts, regional administrative courts, and the Council of State on behalf of individuals, companies, and foreign nationals in Ankara, Istanbul, and Antalya, acting as administrative law attorneys and tax attorneys.

→ For all our other practice areas, please visit our services page.

Administrative law is one of the fundamental branches of public law that regulates relations between the state and individuals and oversees the lawfulness of the acts and actions of the administration. Spanning an extremely wide area with sub-branches such as zoning law, public procurement law, and energy law, it is also gaining increasing importance in disputes arising from administrative processes involving foreign nationals.

Types of Administrative Cases

Cases heard in administrative courts fall into three main categories. A cancellation suit aims to annul an administrative act that is unlawful in terms of jurisdiction, form, reason, subject matter, or purpose. A full remedy suit is the type of case in which individuals whose personal rights have been directly violated by an administrative act or action may claim compensation. Cases arising from administrative contracts cover disputes in public service agreements. In urgent situations, a stay of execution may also be requested.

Civil Servant Cases and Disciplinary Penalties

Civil servants who face unjust disciplinary penalties, dismissal from service, suspension from duty, or unlawful assignment decisions can protect their rights through administrative law. These cases must be conducted with the guidance of an administrative law attorney, as they involve strict procedural rules and short deadlines.

Services we provide in this scope:

1. Objection to the administration and cancellation suits before administrative courts against disciplinary penalties
2. Stay of execution and cancellation suits against dismissal from service and suspension from duty decisions
3. Cases against unlawful assignment, transfer, and secondment decisions
4. Legal support in the prosecution processes of civil servants and other public officials under Law No. 4483
5. Representation in disputes concerning the personal rights of civil servants

Other Services in Administrative Law:

1. Filing and following cancellation suits before administrative courts for the annulment of unlawful administrative acts
2. Full remedy (compensation) suits arising from unlawful acts or actions of the administration
3. Preparation and follow-up of urgent applications requesting a stay of execution
4. Processing legal procedures in cases of implicit rejection where the administration does not respond to an application
5. Objection and cancellation suits against administrative fines
6. Filing cases and follow-up against decisions of the Directorate General of Migration Management and related institutions targeting foreign nationals
7. Objection and litigation against unlawful acts in public procurement processes
8. Proper preparation of applications and objections of an administrative nature
9. Follow-up of appeal proceedings before regional administrative courts and cassation proceedings before the Council of State
10. Legal consultancy in administrative processes within the scope of zoning, public procurement, and energy law

Tax is the compulsory payment collected by the state from individuals and institutions, based on its sovereign authority, to cover public expenditures. Tax law is a complex field that regulates these obligations, is constantly updated, and requires a high level of technical knowledge. Legislation relating to income tax, corporate tax, value added tax, and special consumption tax — beginning with the Tax Procedure Law — is updated every year.

As of 2026, e-notification has become mandatory, and automatic enforcement and digital tax audit applications have become widespread. These developments pave the way for taxpayers to suffer loss of rights without being aware of it. For this reason, consulting an expert tax attorney immediately upon receiving a tax assessment or penalty notification has become more critical than ever.

Deadline for Filing a Case before the Tax Court: 30 Days

A case must be filed before the tax court within only 30 days of the notification of the tax assessment notice. Once this deadline passes, the right to object is extinguished and the penalty becomes final.

Services we provide in this area:

1. Examination and reporting of the tax status of real and legal persons and resolution of tax disputes
2. Filing cases before the tax court and following up the process for the annulment of unlawful tax assessments and procedural penalties
3. Objection and cancellation suits against ex officio tax assessments and penalties imposed
4. Providing technical and legal support before tax courts
5. Resolution of tax penalties through settlement
6. Making and following up restructuring applications before Tax Offices
7. Representation of the taxpayer during tax audits and technical support
8. Providing tax risk assessment services in mergers, demergers, and resource transfer transactions between companies
9. Legal evaluation and consultancy on tax planning
10. Technical and legal support during written opinion (ruling) processes issued by relevant authorities
11. Preparation and follow-up of restructuring applications in tax restructuring processes
12. Consultancy within the scope of international tax disputes and double taxation agreements

Frequently Asked Questions

What is the deadline for filing a case before the administrative court? It is 60 days from the date of notification of the administrative act. This deadline is absolute, and if it is missed, the right to file a case is extinguished. Different deadlines may be set in certain special laws; therefore, it is recommended to obtain legal support immediately upon receiving a notification.

What is the deadline for filing a case before the tax court? It is only 30 days from the date of notification of the tax assessment notice. If a case is not filed within this period, the right to object is lost and the penalty becomes final.

How can an administrative fine be contested? An administrative fine may first be contested by applying to the administration; in the event of rejection or implicit rejection, a cancellation suit is filed before the administrative court. The deadlines in both procedures are quite short.

How can a civil servant contest a disciplinary penalty? A disciplinary penalty may first be contested before the higher disciplinary authority or the disciplinary board. If the objection is rejected, a cancellation suit is filed before the administrative court. The deadline for filing a case is 60 days from the date of notification of the penalty. Since the right to file a case is extinguished if this deadline is missed, it is of great importance to seek legal support immediately upon receiving the notification.

Can foreign nationals file a case before the administrative court? Yes. Cases can be filed before Turkish administrative courts against decisions of the Directorate General of Migration Management or other public institutions targeting foreign nationals — such as deportation, rejection of residence permit, and cancellation of work permit. Our office provides services to foreign clients in Turkish, English, Arabic, Russian, and Persian in these processes.

Is settlement or litigation more advantageous for a tax penalty? This decision varies depending on the type, amount, legal grounds, and strength of evidence of the penalty. It is of great importance to seek expert advice to evaluate the advantages and disadvantages of both routes.

How does the deadline work for tax penalties received via e-notification? In the e-notification system, the deadline begins from the date the electronic notification reaches the recipient. Even if the notification has not been read in the inbox, the legal deadline continues to run. For this reason, it is of great importance to regularly monitor the e-notification inbox and to obtain legal support as soon as the notification arrives.

Why Keleş Law?

Administrative and tax law are fields that require technical legal knowledge, where time limits and procedural rules directly determine loss of rights. Obtaining legal support before a dispute arises — not after — provides a critical advantage.

1. Direct litigation experience before administrative courts, regional administrative courts, and the Council of State
2. Expert representation in civil servant cases and disciplinary penalties
3. Special expertise in administrative processes specific to foreign national clients
4. Effective representation in tax disputes through both settlement and litigation
5. Close monitoring of e-notification and digital audit processes
6. Services in Turkish, English, Arabic, Russian, and Persian
7. Strategic evaluation and risk analysis before the process begins

In addition to our Ankara-based office, we also provide services in Istanbul and Antalya.

Appointments and Contact

To obtain legal support in the field of administrative or tax law, please contact us today. If you have received a notification, we recommend consulting without delay.

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