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“I highly recommend William's work. He came in at a time when we'd had a series of unsatisfactory book keepers and did an excellent job of organizing our accounts, setting up systems and getting our books on track.”

John Smallwood


“Always dependable William has been my bookkeeper for the past three years. I run my own company, and as a small business owner his services keep my finances organized so I'm able to focus on my work. Not only is William flexible, working around my busy schedule, but his friendly outlook make him a pleasure to work with.”

Cary Leitzes


“William has been providing us with the bookkeeping services for the past two years. He has been very instrumental in helping us overcome some of the challenges that we faced. His work is of high quality , his attention to details and level of integrity are unmatched. We continue to work and trust William for all of our bookkeeping needs.”

Alex Behrens


“To whom it may concern, I found working with William to be a valuable experience in that his contributions to my company allowed me to have a sense of confidence in a vital component of my business, maintaining accurate financial records. He brought profesionalism, trustworthiness, and knowledge that I needed in the area where his skills were applied. Joe Cassese Jovin Demo, Inc.”

Joe Cassese


“I'd recommend William to any of my friends and colleagues. He provides excellent service, offers sage advice, and is friendly and funny to boot.”

Charles Nix


“William has kept my books for the last 2 yrs and has delivered an accurate and on time final accounting for me at a cost that is less then if I did it myself. I highly recommend him.”

Tom Hendrickson


“William is an extremely dedicated and committed professional whose clients constantly refer his services to friends and associates. Bottom line is that William's bookkeeping services speaks for itself. He is providing valued service to probably the most integral part of any successful or soon-to-be successful business.”

Thomas Law, President, Highpoint Office Solutions Inc.


“William Lee provides the highest quality of bookeeping services in the NY area. He is very reliable, trustworthy, generous, personable and very detailed and prompt in the work he performs for his clients. He provided me with wonderful work in setting up the accounting for my Music School business in NYC. I highly recommend William Lee's work and services.”

Mihaela Ganea


“Will helped me during the inception of my business. We were growing so quickly, and his service was able to help us manage our continuous development. He also gave us creative suggestions and partners within his network to help us with other professional services needs. I would highly recommend him and would utilize his firm again.”

Judith Peterson


“Well detailed work. Always availableand when not alaways let you know when he can get to the project. Handled small or large projects with great interests. Always has good suggestions on improving the business”

Rosario Safina


“We are extremely pleased with the personal attention we have received from Professional Bookkeeping Services.  They are always available when we need them and have instructed us in the financial basics of running a small business. Everyone we have dealt with has been extremely professional and friendly.”

Jill Swain


“In the more than three years we have used Professional Bookkeeping, I have been freed of the nuts and bolts issues of keeping our business operating smoothly and have been able to concentrate on running and growing our business.  I can call them with any issue, large or small and it is handled quickly and efficiently.”

Rosalind Weintraub


“Professional Bookkeeping provided us timely and very needed support. Diana was quick to analyze the issues we had with the way the QuickBooks program had been previously utilized and showed us some very easy yet critical fixes we could implement to make sure our record keeping was done correctly. She helped us identify problem areas and taught us procedures that corrected the problems as well as improve the way we did business on an ongoing basis.  She provided invaluable tools which we will use from now on.”

Rose Foss


“The services that Professional Bookkeeping Services have provided for me, have been invaluable. When I offered to help my husband in his start up company, I had no idea how to keep the books for a business. Quickbooks was not even a program I had ever been introduced to. A dear friend gave Me your card, telling me that you trained people on the Quickbooks program. Through much patience on your part and a lot of mistakes on mine, I now keep the books full time and I might add with much more confidence than I ever thought possible. I still rely on you to help me when something comes up that I am unsure of, but with the best training around, that is not very often. Your professionalism and encouraging attitude make my job less stressful and more enjoyable . Thanks for all you do.”

Susan Littlejohn, Pipeline Telecom Inc


“Great person to talk to. Very inspirational and positive. He will help you achieve your business goals.”

Iwona Ludyga, Startup Company


“William provided consistently insightful ideas to manage and improve my business's accounts.”

Sarah Durham, Principal, Big Duck Studio


“For the past 10 years we have relied on Professional Bookkeeping Services to maintain our financial records and keep our books up-to-date and in order. Their reliable and responsive service has been invaluable.”

Milt Kass, Principal, Kass Uehling Inc