I completed both the Beginner and Intermediary bundles of the O2K Ultimate Guide to Taxation and Regulation of Crypto Assets, and I genuinely learned a lot. If you're looking for a crypto tax course t... See more
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This was a very informative and well-structured course on crypto assets taxation. The content was explained in a clear and accessible way, making it suitable for both beginners and those with some pri... See more
Company replied
I completed a legal internship at O2K and had a very positive experience. The team was welcoming, professional, and always willing to support me throughout my internship. During my time there,... See more
Company replied
A very concise introductory course on Blockchain technology and Taxation.
Company details
Written by the company
@O2K is a tax and legal consulting firm established in 2020 in Amsterdam, specialized in crypto assets and their international taxation and regulation. We advise individuals, companies, institutions, and governments through one-on-one consulting and tailor-made training, covering crypto and traditional assets in cross-border contexts. Our services include international crypto tax and compliance, regulatory and legal advice, KYC & AML frameworks, company formation and structuring, crypto licensing in Europe, NFT valuation, and part-time Head of Tax / Legal roles. @O2K also developed the 10-lesson “Ultimate Guide to Taxation and Regulation of Crypto Assets”, the only course on the market addressing crypto from a fully international tax perspective.
Contact info
Talbotstraat 227, 1087 DM, Amsterdam, Netherlands
- 0031628644223
- antonia@gmail.com
- o2k.tech
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O2K courses
I completed both the Beginner and Intermediary O2K crypto tax courses and found them very insightful. The material is clear, structured, and a great resource for understanding crypto taxation.
This was a very informative and…
This was a very informative and well-structured course on crypto assets taxation. The content was explained in a clear and accessible way, making it suitable for both beginners and those with some prior knowledge. I would definitely recommend this course to anyone who wants to better understand the taxation of crypto assets.

Reply from @o2k
Highly Recommend the O2K Crypto Tax Courses
I completed both the Beginner and Intermediary bundles of the O2K Ultimate Guide to Taxation and Regulation of Crypto Assets, and I genuinely learned a lot. If you're looking for a crypto tax course that actually makes sense, this is it. You don't necessarily need prior knowledge of crypto assets, blockchain, or tax law to follow along, the content is incredibly digestible and builds up gradually. The courses cover everything from crypto asset classification to key taxable events in the crypto industry, making it a great resource for anyone interested in cryptocurrency taxation, crypto compliance, or crypto regulation. The content is peer-reviewed by real subject matter experts, and the quizzes do a great job of testing your knowledge along the way. Already looking forward to the upcoming courses in the series!
I completed a legal internship at O2K
I completed a legal internship at O2K and had a very positive experience. The team was welcoming, professional, and always willing to support me throughout my internship.
During my time there, I had the opportunity to gain practical insight into legal work and assist with various tasks that helped me develop my skills and understanding of the field.
A special thank you to Antonia Eilander for her guidance, kindness, and support during my internship. Her advice and encouragement made this experience even more valuable.
I would definitely recommend O2K to anyone looking for an opportunity to gain experience in crypto. Thank you to the whole team for this great opportunity.

Reply from @o2k
We had a great experience with O2K
We had a great experience with O2K! The team is professional, attentive, and genuinely committed to providing excellent service.

Reply from @o2k
If you are looking for the best…
If you are looking for the best service, you are on the right track!

Reply from @o2k
The team’s support is immerse
The team’s support is immerse. They would hold you by the hand and guide you all the way through. This made a huge difference for me.

Reply from @o2k
o2K is the industry benchmark when it…
o2K is the industry benchmark when it comes to crypto taxation.
There whole team is very professional and the project was a big success.

Reply from @o2k
Utilizing AI for Better Understanding the Crypto Applications
The Webinar gives a broader view of the impact of AI on the tax and legal issues.

Reply from @o2k
Great experience and grateful meeting
Great experience and grateful to count O2K in my network!

Reply from @o2k
Really good in cross-border situations…
Really good in cross-border situations for both traditional cases and crypto situations.

Reply from @o2k
Finally understand crypto taxation!
I enrolled in o2k's Bundle 1 and Bundle 2 courses, and they completely changed my understanding of crypto taxation.
The content is clear, practical, and covers everything you need to know about how crypto taxation really works.
The instructors explain complex regulations in a way that's easy to understand even if you're not a tax professional.
Highly recommend o2k for anyone wanting to properly understand digital asset taxation!

Reply from @o2k
Thorough and in-depth support on complex matters
Pleased with their support and in-depth analysis on multiple complex topics in various jurisdictions.
They have been very helpful and provided much needed guidance to avoid certain pitfalls.

Reply from @o2k
Exceptional international tax…
Exceptional international tax expertise. Clear, structured, and pragmatic from day one. Complex cross-border issues were explained in a way that actually made sense, with a strong focus on risk management and long-term strategy rather than quick fixes. Communication was precise, timelines were respected, and every recommendation was grounded in solid legal reasoning. You get the feeling you’re working with someone who has seen every edge case and knows how to navigate them calmly and confidently. Highly recommended for anyone dealing with international structures or multi-jurisdictional tax questions.

Reply from @o2k
Recommended in crypto
Recommended in case you look for an advisor knowledgable in crypto.

Reply from @o2k
Best in class
Best in class! Antonia and her team are excellent. Would truly recommend to everyone.

Reply from @o2k
A must have for Web3 entrepreneurs
This company is highly competent in areas as regulatory, tax and compliance advisory advices relating to Web3 and crypto assets. Trustworthy, responsive and cost competitive!

Reply from @o2k
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