Your bilingual
& bicultural partner.
International Tax Strategies & Accounting Services with the U.S.
‣ Europe ‣ Latin America
Mastrodomenico CPA
Our firm delivers sophisticated tax, accounting, and advisory services to high-net-worth individuals, families, investors, and closely held businesses with domestic and international interests. As a boutique practice, we provide highly personalized guidance tailored to the unique financial, operational, and estate planning needs of each client.
Our approach is proactive—not transactional. We work closely with clients to develop comprehensive strategies that preserve wealth, optimize tax positions, and support long-term business and family objectives. We understand the complexities surrounding international operations, multigenerational wealth, corporate structuring, and cross-border tax matters, and we provide thoughtful guidance designed to help clients navigate them with confidence.
Clients rely on us for strategic insight related to business structure, fiscal planning, estate and gift tax planning, succession considerations, and ongoing compliance. We combine technical expertise with a hands-on advisory approach to ensure every aspect of a client’s financial landscape is aligned and efficiently managed.
— Business Structure & Entity Consulting
— Tax Planning & Strategic Advisory
— Year-End Tax Assessments & Optimization
— IRS Representation & Tax Controversy Support
— Estate & Gift Tax Planning
— International Tax Consulting
— Accounting & Bookkeeping
Tax Consulting
We offer tax preparation and consulting services to help clients understand their obligations and comply with their filing requirements.
Estate & Gift tax Planning
We offer estate & gift tax planning designed to help individuals and families efficiently transfer wealth across generations while minimizing estate, gift, and other transfer tax exposure through proactive, tailored strategies.
International Tax
Whether you are a foreign person doing business in the U.S. or a U.S. person business doing business abroad, we’ll help take advantage of your tax and treaty positions.
Accounting & Bookkeeping
We will handle all of the tedious bookkeeping and number-crunching to make sure your books are accurate and tax-ready.
IRS Representation
If you receive a letter from the IRS, call Mastrodomenico first. We are experienced in helping you communicate and negotiate with the IRS.
About Mastrodomenico CPA
Specializing in international tax issues, this specialized team combines their knowledge of U.S. and foreign fiscal policies to help clients’ coordinate, maintain, and execute their U.S. tax and estate planning strategies.
Owner Melissa Mastrodomenico, CPA, a San Antonio native and dual Mexican American citizen, prides herself on being bilingual and bicultural. Learning how to navigate and create fiscal strategies can be complicated and intimidating, and her team of experts strives to educate their clients on making decisions best suited for their businesses.
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Ari Berlin, CPA, brings more than 20 years of public accounting and tax planning experience serving high-net-worth individuals, families, closely held businesses, private foundations, and nonprofit organizations. He began his public accounting career in 2003 and obtained his CPA license in 2006. Ari has been practicing in San Antonio since 2009 and joined Mastrodomenico CPA PC in March 2025.
Ari advises clients on complex federal and state income tax matters, estate and gift tax planning, trust and estate taxation, and strategic tax planning for closely held and multi-generational family businesses. He also has extensive experience advising tax-exempt organizations, including private foundations and supporting organizations. In addition, Ari represents clients in tax controversy matters, including IRS and state tax authority correspondence, audit representation, and resolution of complex tax notices and examinations.
Prior to joining Mastrodomenico CPA PC, Ari spent over a decade with a large international accounting firm in San Antonio, where he led private client service group and all the nonprofit tax engagements for a broad range of clients throughout Texas and the Southwest.
Ari graduated Cum Laude from the University of Nevada, Las Vegas with a Bachelor of Science in Business Administration. He is a member of the Texas Society of Certified Public Accountants and the American Institute of Certified Public Accountants.
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Ari Berlin, CPA, brings more than 20 years of public accounting and tax planning experience serving high-net-worth individuals, families, closely held businesses, private foundations, and nonprofit organizations. He began his public accounting career in 2003 and obtained his CPA license in 2006. Ari has been practicing in San Antonio since 2009 and joined Mastrodomenico CPA PC in March 2025.
Ari advises clients on complex federal and state income tax matters, estate and gift tax planning, trust and estate taxation, and strategic tax planning for closely held and multi-generational family businesses. He also has extensive experience advising tax-exempt organizations, including private foundations and supporting organizations. In addition, Ari represents clients in tax controversy matters, including IRS and state tax authority correspondence, audit representation, and resolution of complex tax notices and examinations.
Prior to joining Mastrodomenico CPA PC, Ari spent over a decade with a large international accounting firm in San Antonio, where he led private client service group and all the nonprofit tax engagements for a broad range of clients throughout Texas and the Southwest.
Ari graduated Cum Laude from the University of Nevada, Las Vegas with a Bachelor of Science in Business Administration. He is a member of the Texas Society of Certified Public Accountants and the American Institute of Certified Public Accountants.
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Ari Berlin, CPA, brings more than 20 years of public accounting and tax planning experience serving high-net-worth individuals, families, closely held businesses, private foundations, and nonprofit organizations. He began his public accounting career in 2003 and obtained his CPA license in 2006. Ari has been practicing in San Antonio since 2009 and joined Mastrodomenico CPA PC in March 2025.
Ari advises clients on complex federal and state income tax matters, estate and gift tax planning, trust and estate taxation, and strategic tax planning for closely held and multi-generational family businesses. He also has extensive experience advising tax-exempt organizations, including private foundations and supporting organizations. In addition, Ari represents clients in tax controversy matters, including IRS and state tax authority correspondence, audit representation, and resolution of complex tax notices and examinations.
Prior to joining Mastrodomenico CPA PC, Ari spent over a decade with a large international accounting firm in San Antonio, where he led private client service group and all the nonprofit tax engagements for a broad range of clients throughout Texas and the Southwest.
Ari graduated Cum Laude from the University of Nevada, Las Vegas with a Bachelor of Science in Business Administration. He is a member of the Texas Society of Certified Public Accountants and the American Institute of Certified Public Accountants.
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Ari Berlin, CPA, brings more than 20 years of public accounting and tax planning experience serving high-net-worth individuals, families, closely held businesses, private foundations, and nonprofit organizations. He began his public accounting career in 2003 and obtained his CPA license in 2006. Ari has been practicing in San Antonio since 2009 and joined Mastrodomenico CPA PC in March 2025.
Ari advises clients on complex federal and state income tax matters, estate and gift tax planning, trust and estate taxation, and strategic tax planning for closely held and multi-generational family businesses. He also has extensive experience advising tax-exempt organizations, including private foundations and supporting organizations. In addition, Ari represents clients in tax controversy matters, including IRS and state tax authority correspondence, audit representation, and resolution of complex tax notices and examinations.
Prior to joining Mastrodomenico CPA PC, Ari spent over a decade with a large international accounting firm in San Antonio, where he led private client service group and all the nonprofit tax engagements for a broad range of clients throughout Texas and the Southwest.
Ari graduated Cum Laude from the University of Nevada, Las Vegas with a Bachelor of Science in Business Administration. He is a member of the Texas Society of Certified Public Accountants and the American Institute of Certified Public Accountants.
