Mr. Cosgun graduated from the Department of Political Sciences at Ankara University in 2008. After passing the sufficiency examination, he was appointed as a Deputy Tax Inspector. In June 2015 he resigned from his position, he joined Arkan & Ergin as a Partner, Tax Director. He has many published articles on different magazines about Tax Legislation. He has work at the publishing committee of the “Declaration Regulations Guide 2015”, “500 Questions and Answers in the Tax Word” (3.Publication)” and “Sample State Councils in Tax Disputes”. After passing the sufficiency examination he becomes Certified Public Accountant.