Your Trusted CPA Firm in Port Jefferson Station & St. James, NY
O’Hara & Company has been helping individuals, families, and small businesses across Suffolk County simplify their taxes and accounting for over 25 years. With offices in Port Jefferson Station and St. James, we deliver professional, one-on-one service that’s both trustworthy and approachable.
Welcome to O’Hara & Company
Where Personal Service Meets Professional Results
When it comes to your finances, you deserve more than a cookie-cutter solution. That’s why we work closely with each client to deliver customized tax and accounting services—whether you're filing a return, running a business, or dealing with the IRS.
Now Serving St. James and Surrounding Neighborhoods
We’re proud to have expanded our practice with a second office in St. James, NY—making it even easier for clients in Smithtown, Nesconset, and nearby communities to access expert accounting support. We offer the same trusted services and personalized attention from our experienced team.
More Than Just Number Crunchers
Our goal is to make accounting simple and stress-free. Whether you’re a first-time filer or a business owner navigating cash flow and payroll, we guide you with clarity and care—every step of the way. We’re here to answer your questions, explain your options, and help you make confident decisions.
Explore Our Services
From tax preparation to payroll and IRS resolution, our firm provides a full suite of accounting services to support individuals, families, and small businesses across Suffolk County.
Accurate, timely filing and personalized strategies for individuals and families.
From bookkeeping to payroll and strategic planning, we support small businesses at every stage.
What Sets O’Hara & Company Apart
Trust isn’t built overnight—and it’s never taken for granted. At O’Hara & Company CPA, our reputation in Port Jefferson Station, St. James, and throughout Suffolk County is the result of decades of commitment to our core values: professionalism, responsiveness, and quality. Whether you’re seeking tax help or long-term accounting support, we provide personalized service rooted in integrity, consistency, and care.
Professionalism
High Standards, Real Accountability
We hold ourselves to a higher standard—always. Every client relationship is handled with care, attention to detail, and up-to-date knowledge of tax law and accounting practices. Our team regularly participates in professional education to stay ahead of regulatory changes, industry updates, and best-in-class service techniques. You’re not just hiring a CPA—you’re gaining a professional partner.
Responsiveness
Year-Round Availability
Whether it’s a question in July, an IRS letter in November, or a tax return in March, we’re here when you need us—not just at filing time. Our clients know they can reach out any time and get thoughtful, timely answers. You won’t be routed through layers of support—you’ll hear from someone who knows you and your file.
Quality
Insightful, Reliable Advice
We’re more than number crunchers. We guide individuals and small businesses through complex decisions with clarity and confidence. From proactive tax planning to strategic business advice, our recommendations are always tailored, transparent, and built around your goals.
Local Roots
Trusted by Generations
O’Hara & Company CPA has served Suffolk County since the early ’90s. Most of our clients come to us through word of mouth—and many have stayed through multiple life chapters. Families, small businesses, and local professionals know they can count on us not just this year, but every year.
