Welcome to John Kasperek Co., Inc.

John Kasperek Co., Inc. (JKC) was founded in 1989 to serve the financial needs of the Chicagoland and Northwest Indiana area. Led by accomplished governmental consulting expert - founder and managing partner John Kasperek, Jr., CPA - our talented team of Certified Public Accountants and professional staff are dedicated to providing customized services to local units of government, nonprofit organizations, corporations and individuals at an affordable rate. The firm's truly unique expertise is rooted in extensive experience through our municipal and educational auditing and consulting engagements. As a boutique company, JKC's attention to detail and hands-on service from all levels of the firm is well received by clients and our team is highly motivated and dedicated to their continued success. We have a proven track record with impeccable results–evidenced by an impressive client list. 

The Illinois Office of the Auditor General recently announced JKC as a Level 3 auditor of governmental audits, the highest certification.

Attention Tax Clients: Visit our tax season webpage for tax preparation forms and instructions.

ShareFile: Security and Piece of Mind for our Clients

We all share files with people both inside and outside our company daily — it's the nature of the modern working world. We know it's important to protect our data or our clients' confidential data, but it’s cumbersome to know when and how to send files securely. Secure file sharing means more than password protection and private email servers — you need to consider how and where the files are stored, how they're protected and how safe they are when you hit 'Send'. Please email This email address is being protected from spambots. You need JavaScript enabled to view it. to get your secure sign in access before the next time you send your sensitive files to JKC.