Effective 18 December 2025, Otterspeer, Haasnoot & Partners will continue as OHP International Tax.

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Our legal entity name has changed from Otterspeer, Haasnoot B.V. to OHP B.V. The way we work, the people you work with, and the quality you expect remain the same.

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Build on a long-standing foundation

OHP was founded by Willem Otterspeer in 1994. For decades, we have advised clients on Dutch and international tax law and transfer pricing, and we will continue to do so with transparency and personal attention.

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‍What stays the same

• Your contact persons and our team remain unchanged.
• We continue to guide clients through a complex and dynamic tax landscape, tailoring advice to each client’s situation. 
• Our advice remains practical and usable, with a strong focus on delivering on our promises. 
• Our purpose remains to serve as a trusted advisor, working closely with clients to manage, control and optimize the tax function.

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Our original name remains part of who we are

The name Otterspeer, Haasnoot & Partners remains an important part of our history. You may still see it referenced in older publications, engagement documentation, or external references, especially where continuity matters.

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Contact details

You can reach us via ohp@ohp.nl or +31 (0)10 436 50 44.

Our office address is Westerkade 2B, 3016 CL Rotterdam.

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