The Turkish Revenue Administration has issued Income Tax General Communiqué No. 326 in the Official Gazette, outlining application measure of Law No. 7524. The purpose of this communiqué is to introduce a general anti-avoidance rule, which mandates that taxpayers calculate their average daily, monthly, and annual revenues from commercial and professional activities.

Under the new rule, if reported revenues deviate from the calculated averages by more than 20%, taxpayers are required to provide an explanation for the discrepancy. This requirement applies to both individual and corporate taxpayers.

This general anti-avoidance framework consists of principle-based rules designed to address unacceptable tax evasion practices. It grants the tax authority the ability to deny certain tax benefits that may enable tax avoidance or to raise tax liabilities for the taxpayer.