About Us
Tax at Work is a boutique tax consultancy firm specialising in domestic and international tax advice to (listed) companies, sovereign wealth funds, investors and private clients. Our tax counsels have extensive litigation experience.
We optimise your tax position with creative and practical solutions. Our approach is characterised by a high degree of personal involvement. We understand your situation and needs. As a result, we can make a difference for you.
Raymond Wanningen
Partner
Raymond is an experienced tax counsel with over twenty-five years of extensive experience in real estate, corporate (re)structuring, M&A, private equity investments and estate planning.
Prior to co-founding Tax at Work in 2013, he practiced at De Brauw Blackstone Westbroek and the real estate group of KPMG Meijburg.
Raymond specialises in real estate development, (re)structuring, real estate investment funds and joint-ventures, Real Estate Transfer Tax, and Value Added Tax in relation to real estate.
He is an active member of the Dutch Association of Tax Advisers (NOB).
E-mail: wanningen@taxatwork.com
Tel: +31 (0) 6 228 47 461
Martijn van de Koolwijk
Partner
Martijn holds a law degree from the University of Leiden and specialises in Dutch and international tax law. Martijn has been practising tax law since 2001. Before co-founding Tax at Work in 2013, Martijn worked for EY and Clifford Chance.
He specialises in the tax aspects of corporate restructurings, M&A transactions, employee/management participations, inbound/outbound investments, and (international) tax planning.
Martijn's clients are mainly privately owned (family) companies in the trading, energy and technology sectors. He also advises private clients (entrepreneurs) on their (international) tax positions. Through his experience at Clifford Chance, Martijn is used to working closely with law firms that do not have in-house tax capabilities.
Martijn is an active member of our India Desk and the Dutch Association of Tax Advisers (NOB).
E-mail: koolwijk@taxatwork.com
Tel: +31 (0) 6 124 55 649
Jos van der Putten
Senior Tax Counsel
Jos is a highly experienced tax counsel with over 35 years of experience in the field of VAT and Real Estate Transfer Tax.
He previously worked for the Ministry of Finance and Deloitte, and later as a partner at KPMG Meijburg & Co, where he advised a wide range of clients. At Tax at Work he is active as a general counsel.
E-mail: vanderputten@taxatwork.com
Sabina Koczewska
Senior Tax Counsel
Sabina graduated from the University of Groningen in 2009 with a Dutch tax law degree, specialising in indirect taxes. Following her studies, she successfully completed the postgraduate professional course of the Dutch Association of Tax Advisers.
She worked as a VAT specialist for renowned tax advisory firms (KPMG Meijburg, BDO and The VAT Consultancy Firm). She then gained in-house experience at Bol.com and ACT Commodities and Fuels.
Sabina is an experienced VAT consultant who enjoys being challenged by complex VAT issues for both national and international companies. She is happy to assist with VAT scans, audits, setting up & optimising systems and tax control frameworks. She is fluent in Dutch, English and Polish.
E-mail: sabina@taxatwork.com
Margriet Kardinaal
Tax Counsel
Margriet graduated in Tax Economics at the University of Amsterdam. After two years of experience at Loyens & Loeff, she joined Tax at Work in 2017.
In her current role, she assists clients with their day-to-day tax affairs and is responsible for the tax compliance practice.
E-mail: kardinaal@taxatwork.com
Merel Zoontjes
Tax counsel
Merel is involved in the preparation of tax returns and resolving tax issues. She enjoys creating the ideal tax situation for our clients through thorough tax planning. Merel started her tax career at Tax at Work.
Before rejoining Tax at Work in mid-2023, she gained experience at PwC and worked in an SME practice for 5 years. Merel successfully completed her HBO Tax Law & Economics programme at the Amsterdam University of Applied Sciences in 2017. She also obtained her Dutch Register of Tax Advisers title in 2023 and is a member of the Dutch Register of Tax Advisers.
E-mail: zoontjes@taxatwork.com
Wim van Barneveld
Senior Financial Account Manager
Wim is an experienced financial accounting manager who oversees the full compliance of our clients' financial administration.
His responsibilities include filing VAT returns, managing payroll administrations and preparing financial statements.
E-mail: barneveld@taxatwork.com
Lindsey Leibbrand
Financial Account Manager
Lindsey has six years of experience in finance, gained at various accountancy firms.
At Tax at Work she is responsible for the day-to-day bookkeeping and preparation of the financial statements.
She holds a bachelor's degree in Business Administration from Amsterdam University of Applied Sciences.
E-mail: leibbrand@taxatwork.com
Leonie Vilters
Operations Manager
Leonie graduated from HTS voor Confectie Mr. Koetsier and the University of Amsterdam (Sociology).
She gained professional experience at well-known companies such as Mexx, Tommy Hilfiger, Spikes and more... and About Branding. She joined Tax at Work in March 2020.
With her extensive experience in various fields, Leonie contributes to the growth and efficiency of the company. Her role includes managing client expectations, oversight of financial management, IT, human resources, marketing and other aspects integral to effective business management.
E-mail: vilters@taxatwork.com