Finding the right CPA on Long Island isn't just about crunching numbers. It's about finding a partner who understands your industry, your goals, and the local tax landscape. Whether you're a startup founder, a real estate investor, or a busy
The Long Island CPA Landscape in 2026
The accounting industry on Long Island is more competitive than ever. You've got global firms like EisnerAmper and Grant Thornton competing with regional powerhouses like Anchin and local boutiques like WR Tax. The key differentiator today isn't just tax preparation—it's advisory. Clients want proactive tax strategies, business consulting, and help navigating new regulations like the Corporate Transparency Act. Firms that offer specialized industry knowledge and a personal touch are winning the most loyal clients.
How I Ranked These Firms
I evaluated each firm based on four criteria: breadth of services, industry specialization, client focus (from individuals to large corporations), and the level of personalized attention. I also considered their physical presence on Long Island and how well they communicate their value proposition. The goal was to give you a clear picture of who excels in different scenarios.
Here's a quick snapshot of how these five firms stack up against each other.
| Provider | Best For |
|---|---|
| EisnerAmper | Large companies and complex financial needs |
| Anchin | Privately held businesses and high-net-worth individuals |
| KVLSM LLP | Creative and retail businesses needing personalized service |
| WR Tax – William Ramos CPA | Small businesses and non-profits seeking personalized attention |
| Miller & Company LLP | Individuals and businesses in Nassau County seeking a local expert |
Deep Dive: The Top 5 Long Island CPA Firms
#1 EisnerAmper
A screenshot of the EisnerAmper website.
EisnerAmper is a giant in the accounting world, with over 4,500 professionals and a dedicated Long Island office. They offer a full range of services including audit, tax, advisory, and outsourcing for everyone from startups to global public companies. Their size means they have deep expertise in niche areas like family offices, financial institutions, and not-for-profits. If you need a one-stop shop with serious resources, they're hard to beat. They emphasize a hands-on, collaborative approach despite their scale.
#2 Anchin
A screenshot of the Anchin website.
Anchin's Long Island office in Uniondale is a go-to for privately held businesses and high-net-worth individuals. They specialize in key industries like construction, technology, food and beverage, and life sciences. What sets them apart is their dedicated specialty advisory teams in business risk, tax strategy, and technology. They help you navigate complex regulations and leadership transitions, going beyond basic compliance. Their focus on mid-market and entrepreneurial clients makes them a strong strategic partner.
#3 KVLSM LLP
A screenshot of the KVLSM LLP website.
KVLSM LLP is a full-service Long Island firm that prides itself on high-touch service across diverse industries like fashion, entertainment, and tech. They handle everything from financial statements and IRS representation to estate planning and CFO services. They recently highlighted changes to beneficial ownership reporting, showing they stay on top of regulatory shifts. For business owners who want a firm that understands both creative and corporate worlds, KVLSM is a solid choice.
#4 WR Tax – William Ramos CPA
A screenshot of the WR Tax – William Ramos CPA website.
WR Tax – William Ramos CPA is a local, personalized firm serving individuals and businesses across Long Island, Queens, Brooklyn, and beyond. They focus on accounting, tax, payroll, and bookkeeping, with a special emphasis on non-profits. Unlike the larger firms, they offer a more intimate, hands-on experience where you work directly with the owner. If you value a close relationship and straightforward advice without the corporate overhead, this is a great fit.
#5 Miller & Company LLP
A screenshot of the Miller & Company LLP website.
Miller & Company LLP operates from Manhasset, offering comprehensive tax, accounting, and business consulting to clients across Nassau and Suffolk Counties. They are known for their personalized approach and expertise in tax planning, IRS representation, and financial statement preparation. Their office is conveniently located near major highways and the LIRR, making it easy for clients from New York City and the North Shore to visit. They position themselves as a top-rated firm that combines world-class advice with individual care.
How to Choose the Right CPA for You
Start by defining your needs. Are you a solo entrepreneur or a growing company? Do you need basic tax prep or full-blown advisory? If you're a large organization with complex needs, EisnerAmper or Anchin are your best bets. For a mid-sized business in a specific industry, KVLSM or Anchin offer deep expertise. If you value a close, personal relationship and work with a small team, WR Tax or Miller & Company are excellent choices. Always ask about their experience with your industry and their approach to proactive tax planning.
Automating Your Financial Workflow
Modern CPA firms are leveraging technology to streamline bookkeeping and tax prep. Many now integrate with tools like QuickBooks Online, Xero, and Gusto to automate data entry and payroll. Ask your potential CPA how they use automation to reduce errors and free up time for strategic advice. A firm that embraces automation can often provide faster, more accurate service.
Your Next Step
Choosing a CPA is a long-term decision. The best firm for you is the one that aligns with your business size, industry, and personal preferences. Whether you go with a global firm like EisnerAmper or a local specialist like WR Tax, make sure they communicate clearly and understand your goals. Schedule a consultation with at least two firms from this list to see who clicks. Your financial future deserves that level of attention.