Global Affiliates. Personalized Service. Expertise
At CASTELLON | HALLOUN, we are dedicated to providing exceptional professional services to our clients worldwide. Our firm is committed to excellence, proficiency, and value, with a team of experienced professionals who have began their careers in public accounting with the "Big Four" international accounting firms.
As a CPA firm, we understand the complexities of doing business in the United States and other countries. Our extensive experience in tax and commercial advisory services allows us to provide expert guidance to companies and individuals looking to navigate the complexities of international trade.
Our Services
Our team offers a range of services, including:
- Tax planning and preparation
- Audit and accounting services
- Business consulting and advisory services
- International taxation and customs compliance
- Business formation and incorporation
- Corporate restructuring and reorganization
We have extensive experience working with clients from various industries, including Import/Export, Hospitality, Healthcare, Entertainment and Professional Athletes. Our team is committed to providing personalized, professional services to our clients, ensuring their unique needs are met with expertise and efficiency.
Global Affiliates
At CASTELLON | HALLOUN, we understand the importance of collaborating with other reputable firms to provide our clients with global reach and expertise. We are a founding member of the International Consulting Group (ICG), a coalition of prestigious accounting, legal, and consulting firms throughout the Americas and Europe.
Industries We Serve
Our team has extensive experience working with clients from various industries, including:
- Import/Export
- Hospitality
- Healthcare
- Entertainment
- Professional Athletes
News
At CASTELLON | HALLOUN, we stay up-to-date with the latest developments in the world of accounting and international business. Our blog features articles and insights on topics such as immigration, taxation, and business consulting. We also host webinars and seminars to educate our clients and the community on important topics.

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