Providing Professional Services with a Personal Touch
CASTELLON | HALLOUN is a full-service CPA firm committed to excellence, proficiency, and value. With a team of experienced professionals, we provide personalized professional services to individuals, businesses, and international companies. Our firm is a founding member of International Consulting Group (ICG), a coalition of prestigious accounting, legal, and consulting firms throughout the Americas and Europe.
Our Firm's Expertise
Our team of experts specializes in tax and commercial advisory services, providing guidance to individuals and businesses seeking to expand their operations or enter new markets. We have extensive experience in helping foreign companies navigate the complexities of doing business in the United States. Our firm's principal, Carlos M. Castellon, CPA, is a seasoned professional with over two decades of experience in public accounting. He has worked with international companies, entrepreneurs, and high-net-worth individuals, providing them with tailored solutions for their tax and financial needs.
Global Affiliates
As a member of ICG, we offer our clients access to a network of experienced professionals and firms in the Americas and Europe. Our affiliation with ICG enables us to provide seamless, global solutions to our clients' needs.
Industry Expertise
Our firm has extensive experience in providing tax, accounting, and business advisory services to various industries, including:
- Import/Export
- Hospitality
- Health Care
- Entertainment & Professional Athletes
Services
Our comprehensive services include:
- Tax preparation and planning
- Financial statement preparation
- Audit and assurance services
- Business consulting and advisory services
- International taxation and expatriate services
International Presence
As a firm with international expertise, we understand the complexities of doing business in foreign markets. Our team has extensive experience in helping international companies navigate the complexities of cross-border transactions, taxation, and compliance. We provide guidance on international taxation, expatriate services, and business planning for entrepreneurs and international companies seeking to expand their operations in the United States.
Client Testimonials
We take pride in our clients' satisfaction and encouragement. Our clients appreciate our personalized approach, timely responses, and expertise in their specific industries. Our testimonials reflect our commitment to delivering outstanding service:
"I wish I had found you before I spent money on a competitor's theme." - Lucy Smith, Big Media Co.
"You're very professional and quick. We will recommend your services to our friends." - Andy Jones, My Business
News and Blog
Stay updated on the latest news and insights from our experts. Our blog covers topics such as how to internationalize your company, obtain a business visa to the US, and other relevant topics affecting international businesses.

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