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About Us

See what drives our success and passion for client services.

Serving clients with integrity since 1946

We’re Maillie LLP—an accounting and advisory firm that combines a depth of expertise with a commitment to forward thinking. We provide exceptional client services across a range of specialized industries, and we do it all with the utmost pride and integrity.

We strive to exceed expectations and are passionate about the success of our clients, business partners, and associates. Our dedication has earned us noteworthy recognition in our community and national accolades, including being named one of the “Top 300” firms in America in 2023 by Inside Public Accounting.

Growing steadily and evolving quickly

Our organization is always making critical strides to meet the growing demands and complexities of the industry—increasing our size, capabilities, and commitment to specialization.

For over 75 years, we’ve grounded our success in helping clients solve their most complex accounting, tax, and business challenges—with unmatched service along the way. Our collective wisdom to identify and pursue new business opportunities and commitment to consistently evolve our technology drives real results.

We were named the 17th largest accounting firm in the Philadelphia area by the Philadelphia Business Journal in 2024. And today, we continue to grow, leveraging our decades of experience to help our clients achieve more.

Connecting clients with an exceptional professional staff

When you choose Maillie as a partner, you get access to a team of more than 100 highly respected and deeply experienced accounting and business professionals.

All of our partners, principals, and our professional staff embrace a personalized, consultative approach to our clients’ complex business needs. You can expect truly comprehensive services from a team of audit, accounting, tax, forensic, and valuation specialists.

Get to know our leadership

Creating a culture where everyone can thrive

From clients to colleagues, we care deeply about the relationships we build. We take pride in the way we conduct ourselves and embrace values that lead to positive, productive outcomes—all while having fun and supporting one another.

Learn more about our culture
https://www.youtube.com/watch?v=3oZykl9hQOA

Testimonials

Many of our clients have been with us for decades—a testament to our steadfast commitment to integrity and high-quality, highly personalized services.

“Their work has always impressed me as extremely professional in addition to being timely and real world helpful. In the unique financial world of Delaware charter schools they are very well informed. I highly recommend Maillie to any organization looking for high quality auditing and financial consulting services.”

Charles S. McDowell, Of Counsel, Potter Anderson & Corroon LLP

“One time we needed Maillie to assist us in various aspects of a private university’s planned giving program. So I called Ed, and within a day we had a detailed response from Joe Shirley, outlining our specific needs and giving us direction. That information was invaluable to understanding that business, and we in turn earned the account.”

John C. Sanchez, Logos Brokerage

“Glenda and I have been using your firm for almost 38 years and we are always pleased with the quality of service and, obviously, the personal relationships we have garnered throughout the years.”

Joseph E. Brion

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Contact Us

HQ Address:
500 North Lewis Road
Limerick, PA 19468

WC Address:
600 Willowbrook Lane
West Chester, PA 19382

New Castle Address:
32 Reads Way
New Castle, DE 19720

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