Meet Your Financial Partners

Experienced professionals dedicated to your success. We combine technical expertise with strategic insight to deliver exceptional results.

Mario Castro, CPA — Founder & Principal

Mario founded Castro CPA, PLLC with a mission to provide businesses with big firm expertise at right-sized pricing. As a Certified Public Accountant with over 12 years of experience at some of the largest accounting firms in the country, he left the partner track to dedicate his career to aiding middle-market companies with premier accounting solutions. Mario specializes in working with small, mid-size and growing businesses, bringing deep industry knowledge and a proven track record of helping clients achieve their financial objectives while maintaining the highest standards of compliance and integrity.

Areas of Expertise

Autum Trinh — Staff Accountant

Autum brings diverse public accounting experience spanning audit, assurance, and corporate tax services across multiple industries. Her career includes work with both Big Four and leading regional accounting firms, as well as the U.S. Government Accountability Office, where she developed a strong foundation in compliance and financial reporting standards. This breadth of experience has equipped her with deep technical expertise and the ability to navigate complex accounting challenges. Autum's commitment to excellence and attention to detail enable her to deliver exceptional service and valuable insights to Castro CPA's clients.

Areas of Expertise

Ready to Work Together?

Let's discuss how our expertise can help your business thrive. Schedule a consultation to explore tailored solutions for your financial needs.

View our services or schedule a consultation. Call (945) 544-9247.