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About Us

Our Firm

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At Fionan R. Costello, CPA we have provided outstanding service to our clients for over 10 years because of our dedication to the three underlying principles of professionalism, responsiveness and quality.

We feel it is extremely important to continually professionally educate ourselves to improve our technical expertise, financial knowledge and service to our clients.  People who choose our firm rely on competent advice and fast, accurate personnel. 

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