We are all specialists, but we find solutions as a team
Geschaftsfuehrung
Volker Hummel
Tax advisor
Auditor
Degree in business administration (FH)
Tax advice
Bettina Harms
Tax advisor
Diploma in Business Administration
Tax advice, specialist consultant for corporate succession DStV e.V.
Jan Saulheimer
Tax advisor
Diploma in Taxation (FH)
Tax advice
Gründer
Werner Renkes
Auditor
Founder and Freelancer
Degree in business administration (FH)
Special Projects
Joachim Wittlich
Auditor
Freelancer and former partner
Fully qualified lawyer
Auditing
Steuerberater
Nina Bitz
Tax advisor
Master of Arts in Taxation
CONCEPTer since August 2017
Year-end work, tax returns, financial accounting
Romina Dietzen
Tax advisor
Graduate in finance (FH)
CONCEPTer since July 2016
Tax consultancy, procedural law, health care consultant (IBG / HS Bremerhaven)
Laura Lenz
Tax advisor
CONCEPTer since January 2016
Tax advice
David Marx
Tax advisor
Business graduate
CONCEPTer since October 2017
Auditing, tax advice
Kerstin Neubauer
Tax advisor
Graduate economist
CONCEPTer since August 2019
Tax advice, support for international companies, value added tax, Consultant for restructuring and corporate planning DStV e.V.
David Stenner
Tax advisor
with Master of Arts in Taxation degree programme
CONCEPTer since August 2015
Tax advice
CONCEPTer
Jonas Bauer
Accountant
Tax clerk
CONCEPTer since January 2020
Year-end work, tax returns, financial accounting
Sandra Bingenheimer
Tax specialist
Tax clerk
CONCEPTer since January 2020
Year-end work, tax returns, financial accounting
Sandra Buchheim
Accountant
Tax clerk
CONCEPTer since October 1999
Financial accounting, controlling
Eda Celik
Tax Assistant
Tax clerk
Bachelor of Arts (DHBW)
CONCEPTer since October 2023
Year-end work, tax returns, financial accounting
Andrea Flicker-Wurth
Payroll and financial accountant
CONCEPTer since March 2018
Financial accounting
Heide Heim
Payroll and financial accountant
CONCEPTer since July 2024
Payrolls, financial accounting
Christiane Hoch
Accountant
Tax clerk
CONCEPTer since May 2015
Year-end work, tax returns, financial accounting
Doreen Jung
Tax specialist
Tax clerk
CONCEPTer since May 2018
Year-end work, tax returns, financial accounting
Ulrike Junker
Payroll and financial accountant
CONCEPTer since March 2014
Payrolls, financial accounting
Laura Nathalia Karpinski
Tax and Audit Assistant
Master of Arts
CONCEPTer since March 2024
Year-end work, tax returns
Philipp Klein
tax clerk
CONCEPTER since October 2022
Year-end work, tax returns, financial accounting
Johannes Klinger
tax clerk
CONCEPTer since August 2021
Year-end work, tax returns, financial accounting
Kristina La Rocca
tax clerk
CONCEPTer since January 2024
Year-end work, tax returns, financial accounting
Daniel Mak
Tax Assistant
Master of Taxation
CONCEPTER since October 2022
Year-end work, tax returns, financial accounting
Nadja Müller
Accounting specialist
CONCEPTer since January 2020
Financial accounting
Merve Nacaroglu
Human resources administrator
Office management clerk
CONCEPTer since June 2023
Payrolls
Mandy Nguyen
Tax clerk
CONCEPTER since October 2022
Year-end work, tax returns, financial accounting
Kerstin Press
Tax clerk
Degree in business administration (FH)
CONCEPTer since March 2006
Year-end work, tax returns, financial accounting
Meike Primorac
Tax clerk
CONCEPTer since October 2020
Payrolls
Claudia Scheiber
Tax clerk
CONCEPTer since January 2020
Payrolls, financial accounting
Ines Wagner
Tax clerk
CONCEPTer since June 2019
Payrolls, tax returns
Monika Weyer
Tax clerk
CONCEPTer since July 1991
Year-end work, tax returns, financial accounting
Adriana Wolf
Tax clerk
CONCEPTer since September 2021
Payrolls
Organisation
Heike Geiss
Office clerk
CONCEPTer since June 2024
Reception
Bianka Hensel
Data processing clerk
CONCEPTer since August 2007
Law firm management, internal accounting
Beate Riemer
Office clerk
CONCEPTer since October 2020
Reception
Jutta Schaefer
Office clerk
CONCEPTer since June 2018
Administration
Azubis
Kambiz Kayhanfar
Trainee as a tax clerk
CONCEPTer since August 2023
IT
David Thelen
IT consultant
CONCEPTer since May 2020
Digitization, interfaces, document management
Talent wanted
Career
"Any meeting that lasts longer than an hour and doesn't even involve laughter is considered aggravated assault." If you would like to start or further develop your career in the field of business and tax consulting in a competent and (usually) good-humoured team of colleagues, become a CONCEPTer.
The history of our company goes back to the year 1988 when we were founded in Mainz. Before that, our founder Werner Renkes had already been working as a tax consultant for around 8 years with two colleagues in a partnership. We are here for you with this experience!