Castellon Professional Services, based in Sunnyvale, CA, offers certified public accountant services including onboarding and tax preparation. Led by Mario, the team is known for their commitment to personal excellence, providing expert advice and services with a focus on attention to detail and trustworthy recommendations.
Clients have praised Mario and his team for their insightful financial guidance and partnership. Whether it's financial planning, taxes, or strategy, they are described as valuable allies for businesses looking to scale and succeed. Mario's approachable and professional demeanor, combined with his impressive credentials, make him a sought-after resource for complex tax situations.
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