Marco Zimmerman Director

Personal quote / vision

I advise my clients on the correct application of payroll tax and social insurance rules. In doing so, I not only give advice, but also investigate the possibilities to optimize the client's situation or limit risks. I also focus on advising on international secondment, the withholding obligation of foreign employers and the possibilities of tax-free reimbursement of extraterritorial expenses.

Specialist experience

• Payroll taxes
• Dutch and international companies operating in the Netherlands
• Supervising and preparing tax audits
• Working Costs Regulation (WKR): is there a proper WKR administration and are the conditions met such as the usability test etc.?
• Certification NEN 4400-1 and 4400-2
• Salary split situations
• Supervise unblocked tax authority investigations (G account)
• Supervise settlement of SNCU audits
• Preventing additional final levy on severance payments (RVU levy)
• WKA / WAS: How can entrepreneurs avoid the risks of chain liability and hirer's liability

Specific client experience

• In my role as tax consultant, I assist temporary employment agencies, payroll companies and other companies that provide personnel. I also advise employers in the not for profit sector.

Education and work experience 

• ​​1989 – 1995 | Universiteit Leiden | Master Tax law / Taxation. 
• ​1994 – 2007 | Deloitte | Tax Lawyer. 
• ​2007 – 2008 | Witlox Van den Boomen | Wage tax specialist. 
• ​2008 – 2009 | Fiscount | Wage tax specialist. 
• ​2009 – 2024| Mazars | Specialist wage tax / Social security. ​ 
• 2024 – current| Forvis Mazars | Specialist wage tax / Social security. ​ 

Additional positions

• Speaker at internal and external meetings or courses. Are you looking for a speaker on payroll taxes or social insurance? Then contact us by e-mail (university@mazars.nl) or by phone: +31 (0)88 277 12 34.