Oak Brook 312.345.6201 | Merriville 219-769-6000 pschimmel@hmscpatax.com

About Our Firm

Hegre, McMahon & Schimmel, LLC

Hegre, McMahon  & Schimmel, LLC is a full-service middle-market certified public accounting firm with nearly 45 years of combined experience, two locations (Merrillville, Indiana and Chicago, Illinois), and seven personnel.  We provide traditional accounting, attest, and tax services to clients in various industries, including, but not limited to, real estate investors, real estate developers, manufacturing, distribution, retail, professional services, personal services, non-for-profits, and medical practices.

We are committed to providing close, personal attention to our clients.  We take pride in giving every client the assurance that the personal assistance they receive comes from years of advanced training, technical experience, and financial expertise.  Our continuing investment of time and resources in continuing professional education, state-of-the-art computer technology, and extensive business relationships is indicative of our commitment to exceeding expectations.

We specialize in servicing the needs of closely-held companies and their owners.  Other accounting firms may be larger and offer similar services, but very few firms provide the depth of support and personalized attention clients receive at Hegre, McMahon & Schimmel, LLC.

Accounting Services

We provide a wide range of various accounting services, including assistance with monthly bookkeeping.  These services range from assistance with recording day-to-day activity such as cash receipts and cash disbursements, recording of general ledger activity, reconciling bank statements, payroll services, assistance with internal financial statements, and monthly clean-up of accounting activity.  Our accounting services are tailor-fitted for our client’s specific needs which are based on their internal accounting structure and range from day-to-day, month-end, quarter-end, or year-end support.

Attest Services

We view our role in the financial reporting process as an opportunity to provide constructive solutions for maximizing your company’s profitability and efficiency.  We provide financial reporting on an audit, review, and compilation level of assurance.

Tax Services

We prefer to take a proactive approach to tax services.  By keeping current on new tax laws and legislation, we are in a position to identify key tax planning opportunities and strategies that minimize the current and future tax liabilities of clients.  We are proud to provide our individual and business clients with the taxation expertise and knowledge that they deserve throughout the year.  Tax services offered include federal and state tax planning and return preparation for individuals, corporations, partnerships, LLCs, LLP’s, trusts, and estates.

Tax planning and preparation form a winning combination for our individual and business clients.  Whether a client is an individual or a multi-tiered partnership, our experienced staff can develop tax strategies that take advantage of new tax laws and legislation.  In addition, tax planning is an essential element of the tax preparation process.  By making tax planning part of the overall business strategy, a client can use our experience and access to the most current new developments in the tax laws to minimize both their current and future tax liabilities.


Trust Worthy

We put our clients first, and you can count on us to provide you with unbiased opinions.


45 years of combined experience in accounting and tax services, covering industries including manufacturing, real estate, distributors, medial practices, retail, and non-for-profits. 


Our firm is a licensed CPA firm, and all the members are licensed CPA's.  We maintain professional standards based on IRS and AICPA guidelines.

Years in the Business

We Look forward to helping you, please contact us for a free 1-hour consultation.

Happy Clients

We believe in exceeding client expectations on quality and timely completion of our services.

Expert Accountants

We are Licensed CPA’s, we have significant experience in auditing and tax planning services.

Who We Are

Our Team of Experts

Pete Schimmel

Pete Schimmel

Managing Partner

Senior Member
Peter T. Schimmel is the managing partner of Hegre, McMahon & Schimmel, LLC specializing in Tax Services. Pete serves as chairman of the sales and marketing committee as well as a member of the finance committee. Read More

Steve Lombardo

Steve Lombardo

Audit & Tax Partner

Member-Audit Partner
Steve Lombardo is a Member specializing in Accounting, Attest, and Tax Services. Steve serves as chairman of the human resources committee as well as a member of the finance committee. Read More

Sean McMahon

Sean McMahon

Tax & Accounting Partner

Member-Tax & Accounting Partner
Sean E. McMahon is a Member specializing in Tax Services. Sean serves as chairman of
the finance committee as well as a member of both the human resources committee and the sales and marketing committee. Read More

Contact Us

Have a question? You can call or submit it to our contact box. 

(312) 345-6201

600 Enterprise Drive. #109, Oak Brook, IL 60523

M-F: 8:30am-5:30 pm, S-S: Closed