What we do

ZS 4 Finance is a company specialized in general financial and tax related services for SME companies, one-man businesses, VOF’s and BV’s.

Our activities concern the accounting, the preparation of the annual accounts, all required tax forms (like VAT, income taxes and corporation tax). We also help and guide new businesses to be set up. Furthermore, we also take care of the complete payroll administration. Of course individuals can also contact us for all tax matters.

Who are we?

ZS 4 Finance was founded in early 2018 by Rob van Zelm and Şenol Öztürk and resulted from a collaboration of more than 10 years between the two gentlemen. Rob van Zelm was born in 1980 and has successfully completed various financial training courses (HBO business economics and Post-HBO Financial controller).

Entrepreneurship is early in the blood: in 2007 he started the Van Zelm InFinance company, often as a freelancer at various (large) companies to carry out assignments (eg ABN AMRO, KLM, Vattenfall etc.).

Şenol Öztürk: born in 1968, the courses MEAO business administration and MBA have successfully completed. In March 2018 he has also completed his POST-HBO dept assistant course. Has already gained a lot of work experience at Ahold, DHL, Gemeente Zaanstad and ABN AMRO.

Our co-operation started at ABN AMRO in 2008. After having worked stand-alone for a long time, it was decided to join forces, so that we are able to optimally serve our customers.

Professionalism, reliability and customer focus are the keys to our success. We therefore work according to the principles for which we stand: Fast, Reliable and Result Oriented!


Şenol Öztürk


Rob van Zelm