Welcome to Cooper Arias LLP

We are pleased to announce our new name, effective May 1, 2013. Cooper, Niemann & Co., CPAs LLP will now be Cooper Arias LLP. Only our name has changed. We are the same group of accounting professionals maintaining the same quality standards, and servicing clients throughout the tri-state and Mid Hudson region.  

Are you looking for a firm large enough to offer a full array of accounting, taxation, auditing and consulting services, but small enough to know you on a personal level? Then look no further than Cooper Arias LLP. The firm started in 1988 as a small one person operation, and has grown today to a staff of 24 in three offices, and includes 7 CPA's, each offering top-notch credentials and experience. Whether you need accounting, auditing, tax planning, estate and trust work, small business consulting, or a full complement of other individualized services, we will give you the full resources you would expect only from a large accounting firm while maintaining the personal touch.


Member : American Institute of CPAs and New York Society of CPAs


Our clients appreciate that our focus is on them. Here's what they've said about us...

Tax Center

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Financial Calculators

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Paycheck Calculators

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