
Orhan İTİŞKEN
Certified Public Accountant (SMMM)
Born in Ankara in 1959, he started working in accounting in 1977 and founded his own practice in 1983. He is the founder of our firm.
Since 1983 · Ankara
Based in Ankara, ITIS provides accounting, tax advisory, company formation and social security services for businesses.


Orhan İtişken founded our practice as Sezen Muhasebe in Ankara Ulus in 1983. Today, we operate as ITIS from our office in Mutlukent, Çankaya.
Our certified public accountants and accounting team work on maintaining financial records, preparing returns and following business accounting processes.
Learn MoreExplore our services, from accounting records to company formation.
Maintaining financial records, preparing tax returns and producing financial statements.
Service scope: Accounting & Certified Public AccountancyReviewing tax obligations and regulatory matters related to your business.
Service scope: Tax AdvisoryFollowing the formation process, from reviewing the company structure to registry filings.
Service scope: Company FormationFollowing workplace and employee notifications, premiums and social security obligations.
Service scope: Social Security (SGK)
Certified Public Accountant (SMMM)
Born in Ankara in 1959, he started working in accounting in 1977 and founded his own practice in 1983. He is the founder of our firm.

Certified Public Accountant (SMMM)
Born in Ankara in 1988, he started working actively in 2007 and became a certified public accountant in 2017.

Accounting, Finance and Administrative Affairs Manager
Born in Ankara in 1995, graduated from Gazi University in 2020.
We have been doing this work with passion and continuous improvement for years
Contact our office by phone or email about our accounting, tax advisory, company formation or SGK services.
For an initial conversation, tell us your business activity and the service you need. Please do not send sensitive identity, payroll or financial documents in your first email.
Mutlukent Mah. 2002 Sokak Park Plaza No: 8/3, Çankaya / Ankara