BI adminAt John Kasperek Co., Inc., we want our clients to know that we offer much more than auditing services–we take great pride in assisting you in all facets of accounting all year to achieve continued success and growth. Our clients include a wide range of local governments, townships, school districts, local municipal pension funds, not-for-profit organizations, and common interest real estate associations. In addition, we also provide personalized services to variety of small business S-Corporations and Partnerhips, and individuals.

Sample client list:

Client Testimonials

American Legion Post 330

Calumet Memorial Park District

Calumet Township

Calumet Township School Treasurer

City of Blue Island

City of Braidwood

City of Calumet City

Prairie State College Foundation

School Districts 130, 147, 148, 149, 152.5, 154, 154.5, 155, 156, 157, 158, 205 and 215

South Cook County Mosquito Abatement

South Suburban Chiefs of Police

South Suburban College Foundation

South Suburban Major Crimes Task Force

Thornton Fractional Township School Treasurer

Thornton Township

Thornton Township School Treasurer

Village of Chicago Ridge

Village of Dolton

Village of Phoenix

Village of Posen

Village of Riverdale

Village of University Park



  • Our Clients

    Our Clients

    Our client list at John Kasperek Co., Inc. features a wide range of significant audit work including local governments, townships, school districts, municipal pension funds, not-for-profit organizations and common interest real estate associations. In addition, we also serve a variety of small business S-Corporations, Partnerships and individuals.

    We are happy to provide contact information for referrals upon request. Here is a sample of our client list.

  • Our Staff

    Our Staff

    Our team at John Kasperek Co., Inc., Certified Public Accountants is dedicated to providing quality, personalized financial guidance to local government, not-for-profit organizations, businesses, corporations and individuals.

    Managing Partner John Kasperek, Jr. has developed our team of professionals with an excellent working knowledge of the accounting principles and current standards to provide the highest level of excellence to our clients. Well known throughout Chicagoland area for his diverse expertise in all aspects of accounting, John has built a thriving company that serves the critical needs of the south suburban and northwest Indiana region.

    Please feel free to reach out to John or the rest of our team at John Kasperek Co., Inc. any time for answers to your questions. Email This email address is being protected from spambots. You need JavaScript enabled to view it. or call (708) 862-2262.

  • Our News

    Our News

    In order to better serve our clients, partners, friends and colleagues, John Kasperek Co., Inc. will issue a new monthly digital newsletter with relevant financial and accounting information, changes to auditing standards and procedures, news and announcements from our firm. Please email This email address is being protected from spambots. You need JavaScript enabled to view it. if you would like to be added to our digital newsletter distribution list.

    Additionally, we recently created an informative, consumer-focused accounting blog titled Your Friends that Count that is posted online at and is distributed through Facebook and LinkedIn.

    We will post press releases, announcements and stories from our firm to our Newsroom page.
  • Our Offices

    Our Offices

    John Kasperek Co., Inc.’s Corporate Office in Mokena is conveniently accessible from I-80 and Lagrange Road. JKC’s Calumet City Office is located near Torrence Avenue, I-80 and I-94. Our primary service area reaches throughout the Chicago Southland and Northwest Indiana region.

    We travel to our clients to provide services when and where they are needed.

    9980 190th Street, Unit A
    Mokena, IL 60448
    1471 Ring Road
    Calumet City, IL 60409
    (708) 862-2262
    This email address is being protected from spambots. You need JavaScript enabled to view it.