Website
Call
Long Island Tax Accounting & Advisory Services
Our firm is ready and capable to handle everything for you so you can focus on what matters most to you. We created this website to provide clients and potential clients with information concerning our firm and our unique, low-pressure approach to personal and professional services. We have an excellent client-retention rate, and we are extremely proud of the high-quality services that our firm provides.

Please, feel free to browse our website to see the services we offer as well as the many helpful resources we provide. We now offer our business clients comprehensive, cloud-based payroll services, designing a system that leverages the latest technology to automate payroll processes, compliance filing, and payroll taxes.
Services
If you're looking for a firm that will focus on your individual needs, and always treat you like a client who matters, look no further. Our firm is large enough to offer a full range of professional services, but small enough to give you the individual attention that you deserve. We will thoroughly and conscientiously study your personal situation, and tailor our advice to your specific needs.
We work with you on a personal level to determine the best solutions for your unique needs, then leverage our seasoned expertise to achieve the best possible results. We are your trusted partner in success. Our firm is large enough to offer a full range of professional services at a fair price but small enough to give you the individual attention that you deserve.
We specialize in assisting our business clients with comprehensive, cloud-base payroll services, designing a system that leverages the latest technology to automate payroll processes, compliance filing, and payroll taxes.

Our state-of-the-art cloud-based payroll processing service enables us to work collaboratively with you, customizing the system to meet your specific needs, and allowing you to have as much, or as little, direct involvement with payroll processes as you like.You and your staff can concentrate on growing your business, rather than spending valuable resources on payroll compliance and reporting.
We can't say enough great things about Lenny and Holly. They are wonderful to work with. They are extremely knowledgeable and always ready to provide advice. They are quick to respond. We live in NC and they handle all of our tax needs and real estate questions quickly and professionally. We highly recommend them!
We love our family, the community we live in and the people within it. When it's not tax season, you can find us enjoying many of Mt. Sinai's treasures such as Heritage Park, Cedar Beach and local restaurants and shops. We moved here originally because we were looking for a family-oriented area with a great school district and based on our research and a family friend who lived in the area already, we found what is now our home of 29 years.
Reviews (10)
Mary Fernandez
Mary Fernandez
Oct 02, 2021
Report
Long Island Tax, Accounting and Advisory Services was wonderful to work with. My accountant was extremely helpful and went above and beyond guiding me through the tax preparation process and preparing my taxes. I couldn't be happier with the group I chose to work with!
Daniel Dollmann
Daniel Dollmann
Sep 18, 2021
Report
As our taxes became more and more complicated we needed help and began searching for an Accountant or firm. Some were not interested others did not return our calls. Then we found Long Island Tax, Accounting, and Advisory Services Inc. to our great satisfaction. Lenny and Holly are complete professionals. They are quick to respond to your questions with the right answers. We recommend them without reservation.
Pete & Jess Marcano
Pete & Jess Marcano
Sep 01, 2021
Report
LITAASI has been handling our family’s taxes and financial situations for a number of years now. I can’t recommend another firm more highly. Call to find out if they’re a right fit for you. Great people…
Adam Bordonaro
Adam Bordonaro
Aug 23, 2021
Report
Great experience working with LITAASI. Excellent communication, advisement and turn around on both my business and personal taxes. LITAASI has also helped me incorporate other businesses and is working with me to set up budgets and P&Ls on Quickbooks Online. I have not had the best experiences with other firms, so working with the team at LITAASI has been a breath of fresh air. The personal service I received made me feel valued as a client and I recommend their services to everyone I know who is tired of receiving sub-par service from their tax and accounting provider.
S. K.
S. K.
Apr 06, 2021
Report
Incredible team effort & always with their focus on my best interests. Its really a delightful sight watching them work in concert. Efficient & very responsive throughout the year whenever I've had questions. I highly recommend them. Thank you Lenny & Holly!
Bo K.
Bo K.
Mar 21, 2021
Report
An amazing duo, Holly & Lenny work in concert for my best interest at tax time. Having questions throughout the year, they have always been there to answer me. Very efficient & thorough. Periodically, they send important tax, life, & financial information in a newsletter. I'm so glad I found them. Search no more!
S. H.
S. H.
Nov 18, 2020
Report
Lenny and Holly are absolutely the best. They are quick to respond to emails or phone calls. They are extremely knowledgeable and professional. We live in NC and they are able to handle our questions and taxes. If you are looking for an accounting and advisory service give them a call. You won't be disappointed.
Terence Dunbar
Terence Dunbar
Sep 24, 2020
Report
I'm so glad my friend told me about Holly & Lenny from Long Island Tax, Accounting & Advisory Services, Inc. Prior to last year, I had an accountant that I used for year's. I thought he was doing everything that needed to be done for both my business and personal returns only to find out later that he didn't. In some years, he forgot to file some or part of my returns completely. After working with Holly & Lenny for just under a year, they took care of amending & filing my prior year's returns and getting me caught up with both the IRS and NYS. They explained what needed to be done and did it.
Erik L.
Erik L.
Nov 12, 2018
Report
Holly has been nothing short of amazing. She helped me set up an LLC and then later an S Corp. She manages my books monthly and advises me on all things tax related as well as finance and investment related. She is extremely trustworthy and always looking out for my best interest. She noticed when my investments were being mismanaged and set me up with a new advisor who completely turned my investments around for the better. I can reach out to her at any time and she is always available to me. She has helped me in more ways than I can count. I consider her family. I highly recommend her
Barbara G.
Barbara G.
Nov 09, 2018
Report
Holly is great. She is always available to answer my questions and gives good support across the year so tax time doesn't feel like crunch time.