About Us


The Tax Advisory Service, Inc. is a full service accounting firm with an office in Port Washington, N.Y. Our firm caters to a wide variety of clients including individuals, small and medium-sized business entities, and not-for-profit organizations in Port Washington, Manhasset, Roslyn, Great Neck, Glen Cove, and the surrounding areas. We specialize in tax planning for small businesses and all areas of personal financial planning. Of course, in addition to our specialty areas, we also provide tax and accounting services, including tax planning and tax return preparation, auditing, and bookkeeping.

Our continuing mission is to serve you by providing the highest level of expertise and professionalism possible. As experts in the accounting issues and tax laws that impact our clients, we provide efficient, expert solutions to businesses and individuals. At the same time, we pride oursleves on delivering affordable services in a timely manner with a personal touch. That's why most of our new clients are referred by existing clients

Kenneth K. Dillenbeck, Jr.,CPA, the principal in our firm, has been a Certified Public Accountant for 30 years. To schedule a complimentary, no-cost, no-obligation initial consultation with him, please call 516-231-5575.