Our Services
LLC Formation & Business Setup
We help you establish your business in the United States quickly and correctly, ensuring full compliance from day one.
Payroll Services
Complete payroll setup and processing to ensure your employees are paid correctly and all obligations are met.
Tax Preparation
Accurate and reliable tax preparation for individuals and businesses, ensuring compliance while optimizing your tax position.
Sales & Local Tax Compliance
Registration, filing, and compliance support for sales tax and other state and local tax obligations.
Business Compliance
We keep your business compliant with federal, state, and local requirements, helping you avoid penalties and stay in good standing.
ITIN Assistance
Guidance and support with ITIN applications, ensuring proper documentation and IRS compliance.
Bookkeeping
Clear and organized financial records so you can understand your numbers and make confident business decisions.
Mailing & Registered Address Service
Business mailing and registered address services to support compliance and official correspondence.
About Castagnet Tax Consulting Group
Julián Castagnet is the Founder and Principal Advisor of Castagnet Tax Consulting Group, a firm based in Kissimmee, Florida.
We specialize in helping individuals and business owners navigate the U.S. tax and financial system with clarity, structure, and confidence. Our approach combines technical expertise with practical solutions, allowing our clients to stay compliant while building stronger, more organized businesses.
From tax preparation and bookkeeping to payroll, LLC formation, and ongoing compliance, we provide comprehensive support tailored to each client’s specific needs. We understand that managing taxes and financial responsibilities in the United States can be complex — our goal is to simplify that process and give you peace of mind.
Our approach is focused on::
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bring structure and organization to your business
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reduce uncertainty and financial risk
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help you make confident, informed decisions
We work with both U.S. and international clients, supporting entrepreneurs, small business owners, and individuals who require clear guidance and reliable execution. Our firm is committed to delivering accurate, timely, and personalized service in every engagement.
We provide support in both English and Spanish, ensuring clear communication and a better experience for every client.
At Castagnet, we don’t just prepare taxes — we help you build a stronger, more organized business.
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