McMahon & Associates – Your Partner for Growth

We Can Help

We offer audits / financial statements, payroll, taxation, consulting & more

See Our Services

Online or In-Person

Our Team is Here to Help

We Listen

Focused on What Matters Most - You

Our Services

Our Identity

Established in 1971, McMahon & Associates has been serving Northwest Indiana and Chicago’s South Suburbs to help them grow their business. McMahon & Associates is locally-owned and offers a unique blend of big firm services and small firm care. From advanced tax expertise, IRS representation, audits, business valuations, estate planning and succession planning to basic bookkeeping and payroll services, clients find the services they need for every stage of their business or every stage of life.

Terry McMahon, CPA

President/CEO, Shareholder

Karen McMahon, EA

Account Manager, Corporate Treasurer, Shareholder

Marisa Smoljan, CPA

Tax Department Chair, Corporate Secretary, Shareholder

Jolanta Moore, DBA, CPA

Accounting & Audit Department Chair, Shareholder

Let Our Team

Work for you

As your partner for growth, CPAs and EAs at McMahon & Associates offer over 40 years of experience. Our tax professionals will help you create a tax plan that will save you time and money. As the Region’s #1 Accounting Firm for the past 15 years, our clients know they can count on our professionals in the short and long term.