About Magone & Company, P.C.

In the 30+ years we’ve been in the accounting business, change has occurred at a rapid pace — from tax laws to technology. What hasn’t changed? The collaborative way we work with businesses, individuals and families to boost their financial knowledge, help build wealth, reduce risk and protect what they’ve worked hard to build. It’s a very different approach, and it’s not for everyone. We’re in this to build long-term relationships, and we hope you are, too.

Our exceptional reputation in the community reflects our high standards, commitment to lowering taxes, and unparalleled customer support. Call us at 973-301-2300 now and request a free consultation to learn more about what our Northern New Jersey, NJ CPA firm can do for you and your business. Our CPA Firm provides virtual services like secure online file transfers and virtual consultations.

Nick Magone CPA

Nick Magone, CPA, CGMA, CFP®

Managing Partner

Areas of Specialization: International taxation, construction, wholesale distribution, advisory and nonprofit.

Nick Magone lends a global view to every engagement based on his 25+ years of audit and business advisory experience. A former "Big Four" professional, he founded and grew a local NJ CPA firm to 20+ employees and served as a partner in a top 25 NY-based regional firm prior to launching Magone & Company.

Magone & Company is the embodiment of Magone’s guiding professional principle — that numbers are just the beginning. “A financial statement or a tax return is just the start of the value we deliver. We use that information as a building block to help business owners and individuals achieve their growth goals.”

From technology start-ups to privately held companies and non-profits, Magone enjoys working with growth-oriented organizations that are passionate about what they do — and value the perspective of an equally passionate financial expert who can help accelerate their growth.

Over the course of his career, Magone has testified in U.S. Bankruptcy Court and served as an expert witness for damage claims and fraud. He is a frequent presenter to professional organizations in the U.S. and abroad, and a speaker for the American Institute of Certified Public Accountants (AICPA).

Magone is an active member of the AICPA, New Jersey Society of Certified Public Accountants and Financial Planning Association. A Seton Hall University alumnus, Magone is a Certified Public Accountant in New Jersey and New York and a Certified Financial Planner®. He was also recently awarded the designation of Chartered Global Management Accountant (CGMA) from the American Institute of CPAs (AICPA) and the Chartered Institute of Management Accountants (CIMA).

When not working on innovative client solutions, Magone enjoys golf, honing his Italian language skills, and cheering on the Seton Hall Pirates basketball team with his family. He currently serves on Seton Hall University’s Presidential and Accounting Advisory Committees.

Karl C. Callejas, CPA, CGMA

Karl C. Callejas, CPA, CGMA

Partner, Assurance Services

Areas of Specialization: Employee benefit plans, construction, nonprofit, private schools for the disabled and advisory.

With more than 25 years of audit experience, Karl Callejas began his career as an auditor for a Big Four firm and then rose to various leadership positions within the Big Four and top ten firms prior to joining Nick at Magone & Company.

Callejas now leads the accounting and auditing function for Magone & Co, overseeing audit planning, strategy and quality of service delivery. Additionally, clients often enlist his help to solve their complex accounting, audit, and tax issues or to assist with consulting projects, including M&A due diligence reviews, business process analysis and operational reviews. His experience encompasses manufacturing, wholesale, non-profit, regulated public utilities, benefit plans and construction, among others.

Callejas’ skills were honed through experience auditing hundreds of companies in various industries. He says, "Sitting down with a group of individuals and looking boldly at all the possibilities gives me a sense of satisfaction and encourages me to think out of the box. I look around and what I see is the future."

Callejas is an active member of the AICPA and NJSCPA. He is a Certified Public Accountant in New Jersey and Pennsylvania, and also holds the designation of CGMA from the AICPA and the CIMA. When not working with clients, he loves camping with his family, and cheering for his son’s soccer team and his daughter’s swim team. Karl resides in Morris County, NJ, with his wife and two children.

Al Mahler

Alfred Mahler, CPA

Partner-in-Charge, CAS Services

Areas of Specialization: Trusts & estates, real estate

Alfred Mahler brings more than 40 years of tax, accounting and business advisory experience to clients of the firm. With a keen sense of clients’ needs, and his warm personal touch, Alfred successfully grew his practice, specializing in working with closely held businesses and professional service firms, as well as individual and trust and estate taxes and elder financial oversight.

Alfred began his career with a small, Millburn-based firm, swiftly rising to become a partner. After his firm’s merger with Eisner, he served as a partner in their New Jersey office. About 20 years ago, he left to open his own firm, A. Mahler & Associates.

“Providing close personal attention to all my clients, and affording one-on-one assistance to elders needing help handling their finances, has fostered the respect and concern I have for the future welfare of my clients and their families.”

Alfred has served as a long-term board member for several not-for-profit foundations. He has also been on the board of a company supplying medical rehabilitative devices. Alfred is a graduate of Bronx High School of Science and Manhattan College.

A long-time resident of Livingston, Alfred and his wife Jeanette recently moved to Whippany. One of their bigger challenges these days is keeping up with their three adult children who live outside of New Jersey.

John Hemmendinger

John S. Hemmendinger, CPA, CGMA

Partner, Tax, Estates and Trusts

Areas of Specialization: Automotive, trusts & estates, tax, real estate

John Hemmendinger brings four decades of accounting experience to the Magone & Company team. From 2003-2020, he led Hemmendinger + Company, which served closely held businesses in industries including automotive services, manufacturing, professional services, real estate management, property development and nonprofit organizations.

A member of the American Institute of Certified Public Accountants and the New Jersey Society of Certified Public Accountants, Hemmendinger has held leadership roles in a number of local organizations, serving on the board of the Morris Museum from 2000 to 2016. He also is a former board chair of Consumer Credit Counseling Service of NJ, and former president and chair of the Pastime Club, a nonprofit civic and fraternal organization located in Mendham, NJ.