About Us

ITIS began as Sezen Muhasebe, founded by Orhan İtişken in Ankara Ulus in 1983. Our founder started working in accounting in 1977.

Today, our certified public accountants and accounting team provide accounting, tax advisory, company formation and social security services.

We moved to our office in Mutlukent, Çankaya in 2020. From here, we follow financial records, returns and related regulatory processes for businesses.

Established: 1983
Mutlukent · Çankaya: Ankara
Certified public accountancy: SMMM
Service scope: 4 areas

Our Management Team

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.

Hasan Kemal İTİŞKEN

Certified Public Accountant (SMMM)

Born in Ankara in 1988, he started working actively in 2007 and became a certified public accountant in 2017.

Mehmet Berşan İTİŞKEN

Accounting, Finance and Administrative Affairs Manager

Born in Ankara in 1995, graduated from Gazi University in 2020.

Company History

From our founder’s career in 1977 to the establishment of our practice in 1983 and our current office.

2020
Our New Office
We moved to our new office in Mutlukent
2018
Our Website Went Live
Our website was launched
2017
Move to the West Gate Office
We moved to our new office in the completed West Gate residences
2017
New Certified Public Accountant
Hasan Kemal İtişken became a certified public accountant
1996
Move to the Kızılay Office
We moved to our Kızılay office to be more accessible to our clients
1983
We were founded in 1983 in Ankara Ulus as Sezen Muhasebe
By Orhan İTİŞKEN, building on 6 years of sector experience