Your trusted advisors for all your accounting needs.
We're a team of experienced accountants dedicated to empowering individuals and small businesses in Mission Viejo and beyond. Our personalized approach and commitment to building lasting relationships set us apart in the field.
Who We Are
Robert J. Coscia, CPA, founded Robert J. Coscia & Co. in 1989. With over 30 years of experience, Robert and his team provide clients with comprehensive accounting, tax, and advisory services. We understand the unique challenges faced by individuals and businesses in a constantly evolving economic landscape.
What We Do
We offer a comprehensive range of services tailored to meet your specific needs, including:
Tax Services
- Comprehensive tax return preparation for individuals, businesses, corporations, estates, trusts, and non-profit organizations
- Tax planning and research to minimize your tax burden
- Representation before taxing agencies in case of audits or disputes
Audit and Assurance Services
- Audits and reviews for non-profit organizations, including homeowner associations, in accordance with industry standards
- Agreed-upon procedures to tailor our services to your specific needs
- Consulting on internal controls and risk management
Additional Services
- Financial planning and consulting
- Business valuation services
- Forensic accounting and litigation support
Our Approach
We believe in building strong relationships with our clients through open communication, regular updates, and personalized attention. We take the time to understand your unique needs and goals to provide tailored solutions that align with your individual circumstances.
Our Values
- Integrity: We uphold the highest ethical standards and act with transparency in all our interactions.
- Client Focus: Your success is our success. We prioritize your needs and dedicate ourselves to exceeding your expectations.
- Expertise: Our team is highly skilled and experienced, constantly updating our knowledge to stay ahead of industry trends and regulations.
- Professionalism: We maintain strict confidentiality and adhere to the highest industry standards.

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