About Us


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The Tax Advisory Service, Inc. is a full service accounting firm with an office in Locust Valley, N.Y. Our firm caters to a wide variety of clients including individuals, medium-sized business entities and not-for-profit organizations. 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 25 years.  To schedule a complimentary, no-cost, no-obligation intitial consulation with him, please call 516-759-3900 (extension 1017)