What we do

The 5BAR quality

5BAR Assurance was founded in 2012 by Kees-Jan Nielen and Gert van de Laar. Both learned their profession at one of the Big Four audit firms in the Netherlands and through working within the complex environment of multinational and listed enterprises.

With a growing belief in the power of entrepreneurship and a personalised approach, Kees-Jan and Gert decided to take the plunge and start their own audit firm.

“We always dive deeper, while pushing the limits of our abilities.”

Due to the constant and rapid changes of circumstances and regulations within our profession, we too must adapt as pragmatically as possible to the current and expected market demands and requirements, which we do in our own way. We are there where our clients can use us best, now and in the future.

Our people

It goes without saying that we are meticulous when recruiting our employees.
Our talented, diverse and international team has the relevant expertise, comprehensive experience and highly developed social skills required to assist you in the optimal professional and personal manner. We are always determined to get to the bottom of a business operation and uncover what would otherwise have remained invisible.

Here at 5BAR we dive deeper, while continuing to push the limits of our abilities. This allows us to make highly beneficial recommendations to our clients, which in turn can be directly implemented, taking them to the next level.

A combination of talents

Our team offers a personal dedication and approach not easily found in this industry. At the same time, our expertise and professional excellence equal what you would expect from a reputable firm. A unique combination that enables us to raise the bar and set a new standard of excellence within our industry – the ‘5BAR Quality Standard’ that our clients can rely on with confidence.


We are keen to share our knowledge and experience with you. We achieve this by offering you a glimpse of our own working practices and by regularly updating you on current developments and much-needed know-how in financial accounting. 

How can we help?

Are you in need of advice and/or support relating to your financial or reporting?
Please feel free to give us a call +31 (0)88 0155 1900 or send us an e-mail at info@5bar.nl. We are always happy to provide appropriate input.

Do you want to become part of our diverse, international team? Feel free to get in touch with us.