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Your Trusted Long Island CPA Firm for Tax & Accounting Services
At James Castaldo CPA & Associates, we provide personalized support tailored to the unique needs of small businesses and individuals across Long Island. Our firm specializes in proactive tax strategies that are legal, ethical, and highly effective, ensuring clients retain more of their hard-earned profits. With decades of combined experience, our team offers comprehensive services including tax preparation, outsourced accounting, bookkeeping, retirement and estate planning, and new business advisement. We pride ourselves on forming long-standing professional relationships by listening carefully to client concerns and crafting customized plans to meet their financial goals. Our expertise extends to helping new businesses select the optimal entity structure to minimize tax liabilities while developing sound business strategies. As a trusted Long Island CPA firm, we are committed to transparency, professionalism, and exceptional service, demonstrated through our free initial consultation offering.

Our team includes certified professionals with extensive backgrounds in corporate compliance, tax representation, and industry-specific accounting for sectors such as construction, technology, and transportation. We operate from three convenient locations in Melville, Hauppauge, and Lake Grove, NY, serving clients with the same dedication to excellence that has defined our practice since its founding. Our commitment to client education is reflected in resources like our free guide, '5 Small Business Tax Credits You Should Know About,' and our secure file-sharing system for efficient communication. By combining technical expertise with personalized attention, we strive to be the accounting partner our clients can rely on for both immediate needs and long-term financial success.
Services
Tax Reduction IRS Tax Resolution Trust and Estate Planning Small Business Accounting QuickBooks Services Outsourced Bookkeeping Business Incorporation
Highlights and features
  • We offer a free initial consultation to understand your unique needs
  • Our team specializes in industry-specific accounting for construction, tech, and transportation businesses
  • We provide personalized support with certified CPA professionals
  • We implement proactive tax planning strategies to maximize savings
  • Our firm combines corporate compliance experience with local expertise
Services
Tax Services
Our tax services combine legal compliance with strategic planning to minimize liabilities for individuals and businesses. We offer customized solutions including income tax preparation, IRS representation, and year-round tax planning strategies tailored to Long Island businesses in construction, technology, and transportation sectors.
Business Accounting
We provide comprehensive accounting and bookkeeping solutions for small businesses, including financial statement preparation, payroll processing, and QuickBooks setup and support. Our services ensure accurate financial tracking and compliance while freeing business owners to focus on operations.
Business Incorporation
Our incorporation advisory helps new businesses select optimal legal structures to minimize tax burdens. We guide clients through entity selection, business plan development, and compliance requirements, ensuring proper foundations for long-term success in New York's competitive market environment.
Trust and Estate Planning
We offer specialized trust and estate planning services that protect assets and ensure smooth wealth transfer. Our approach combines tax-efficient strategies with personalized guidance to create comprehensive plans that meet individual family needs and financial objectives.
QuickBooks Services
Our QuickBooks expertise includes system setup, data file review, and training for business owners. We help clients implement efficient accounting processes using industry-leading software, ensuring accurate financial management and improved business decision-making capabilities.
People
James Castaldo
CPA
James Castaldo is a certified public accountant with extensive experience in corporate compliance and tax strategy. He previously served as Manager of Compliance for Cablevision Systems Corporation and held senior roles at L-3 Communications and Bender Cicotto & Co. He holds an MS in Taxation from Long Island University and a BA in Business Administration from Hofstra University.
Questions
What accounting services do you offer for small businesses?
We provide comprehensive accounting services including bookkeeping, financial statement preparation, payroll processing, and QuickBooks support tailored to Long Island small businesses across multiple industries.
Do you offer free initial consultations?
Yes, we offer free initial consultations to help you understand our services and determine the best approach for your accounting and tax needs.
What industries do you specialize in?
We specialize in serving construction, technology, transportation, and nonprofit organizations, with deep expertise in their unique accounting and tax requirements.
How can you help with tax planning?
We develop proactive tax strategies to minimize liabilities, including year-round planning, IRS representation, and identifying eligible tax credits to maximize savings for businesses and individuals.
What locations do you serve?
We serve clients throughout Long Island from our offices in Melville, Hauppauge, and Lake Grove, NY, with virtual services available for remote clients.
Do you provide estate planning services?
Yes, we offer trust and estate planning services to help clients protect assets and create effective wealth transfer strategies tailored to their specific needs.