Sean O'Brien, CPA, CITP
Credentials:Â Certified Public Accountant
Certified Information Technology Professional
Co Founder & Tax Strategy Director
Sean brings more than 30 years of accounting and tax experience to O'Brien Tax Partners. As a Certified Public Accountant (CPA) and Certified Information Technology Professional (CITP), he combines extensive tax knowledge with a commitment to helping individuals and businesses navigate their financial needs with confidence.
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Before co-founding O'Brien Tax Partners, Sean was a partner at O'Brien, Riley & Ryan, P.C., where he developed long-standing relationships with individuals and business owners. His approach to accounting reflects the values instilled by his father, Lawrence O'Brien, who mentored him early in his career: integrity, attention to detail, and a commitment to providing dependable, personalized service.
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Today, Sean continues that tradition by providing experienced tax preparation, planning, and accounting guidance while using modern technology to make working with the firm convenient and secure.
The Power of Our Partnership
Our firm isn't just a business — it's a shared life's work. We are a husband and wife team who have worked side-by-side in the accounting industry since 2002. For more than 24 years, we've blended our unique strengths to protect, streamline, and grow our clients' businesses.
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Because we've spent decades collaborating under one roof, your daily bookkeeping and your long-term tax planning never happen in a vacuum. We work together to keep your financial records organized and your tax planning connected, so the details of your day-to-day finances support your long-term goals.
At O'Brien Tax Partners, we believe experienced accounting and tax services should come with personal attention. As a locally owned firm serving the South Shore and Greater Boston, we work directly with individuals and small businesses to provide reliable tax preparation, bookkeeping, and accounting services.
Whether you need help with tax preparation, bookkeeping, or ongoing compliance, we're here to make the process simpler and more manageable.
A Partnership Built on Experience
About Us
Lynne O'Brien
Co Founder & Systems Director
Credentials:Â B.S. in Accounting,
Intuit Certified Bookkeeping Professional
Lynne brings more than 20 years of hands-on accounting, bookkeeping, and tax preparation experience to O'Brien Tax Partners. With a Bachelor of Science in Accounting and certification as an Intuit Certified Bookkeeping Professional, she combines a strong accounting foundation with extensive practical experience helping individuals and businesses manage their financial responsibilities.
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Lynne specializes in bookkeeping, financial reporting, payroll reconciliations, and individual and business tax preparation. Her attention to detail and thorough understanding of day-to-day accounting help ensure that clients' financial records are accurate, organized, and ready for tax time.
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As co-founder, Lynne works directly with clients throughout the year, providing responsive, dependable service and helping make the accounting and tax preparation process as straightforward as possible.