"The Law No. 7577 on Amendments to Certain Laws", published in the Official Gazette dated April 17, 2026, introduced significant regulations affecting taxation, social security, and various sectors, which have entered into force.

The amendments are as follows:

Pursuant to Presidential Decree No. 11066, published in the Official Gazette No. 33199 dated March 17, 2026, amendments were made to the procedures and principles governing the determination of companies subject to independent audit.

According to the mentioned amendment, the threshold values to be considered for companies not falling under any specific scope or exemption have been revised as follows:

Pursuant to Article 5 of the Industrial Registry Law No. 6948, industrial registry–registered enterprises are required to submit the "Annual Operating Statement", which contains information on their activities in the preceding year, within the first four months of each year.

Accordingly, enterprises holding an Industrial Registry Certificate must submit the Annual Operating Statement for the year 2025 electronically via the Industrial Registry Information System between January 1 and April 30, 2026, and no later than April 30, 2026.

Each year, the rental income earned by real persons are declared to the respective tax office with the Annual Income Declaration until the end of March. For 2025 income, the relevant declarations must be submitted unti March 31, 2026. The types of income that are within the scope of immoveable assets except the rental income, are stated in the Income Tax Law Number 70.

In order to declare the rent income, the lump sum expense method and actual expense method are implemented Taxpayers who choose the lump-sum expense method can deduct the lump-sum expense of 15% of the amount remaining after deducting the exemption amount from the rental income in return for actual expenses. Those who lease the rights cannot apply the lump sum expense method. In the below table, the related details are provided for rental income from residential and commercial properties. For further detailed information, please contact your customer representative or an expert.