On the surface, accounting firms seem a lot alike. But some firms leap out of the pack. So what makes KOS different?
Our people. Sincerely caring, really listening, and then putting your outcome ahead of our interests.
It’s our exuberant commitment: to put you above all else.

Based in Deerfield, a Chicago suburb, KOS serves businesses and individuals in multiple states
providing business consulting, auditing, accounting and bookkeeping, and tax services.

KOS News Ticker

  • KOS to Participate in IL CPA Day of Service - On Friday, September 12th, KOS employees will be participating in the Illinois CPA Day of Service. Employees will be packing food boxes at the Feed My Starving Children facility located at 742 East Park Avenue in Libertyville, IL. Everyone is looking forward to working together outside of the office and being a part of this rewarding day. KOS is excited to help out and give back to the... More →
  • Retirement Planning: Age Before Beauty - Financial Benefits of Getting Older - There is more to look forward to than just senior citizen discounts as you approach the end of your working career. When you cross certain thresholds, you may benefit from special provisions affecting retirement savers. Here is a brief rundown of these age-based mileposts. - Social Security benefits: Generally, you must wait until a specified age before you... More →
  • Identity Theft and Taxes - Bruce Kreisman, KOS Supervisor bkreisman@koscpa.com - Identity theft is a growing and frustrating problem in today’s world. Perpetrators run the gamut from sophisticated thieves breaching the security of large retailers to people rummaging through garbage for useful information, to everything in between. We have been warned not to reveal personal information, and to shred documents containing... More →
  • Repair Regulations - Amount Paid to Improve Tangible Property - Christie Butcher, KOS Senior Tax Manager cbutcher@koscpa.com - Deanna Schiff, KOS Manager dschiff@koscpa.com - This is our third article in a four part series on the new IRS repair regulations. We are continuing to provide insights from our professionals about the potential implications of these important guidelines. - For many taxpayers, the most significant aspects of the Repair Regulations are... More →
  • The New QuickBooks® Online - Kathryn Hoffman, KOS Supervisorkhoffman@koscpa.com - Earlier this year, Intuit did a complete overhaul of QuickBooks® Online (“QBO”). Intuit claims that the new QBO is “easier, faster and more organized than ever.” The new QBO was designed to be laid out more like the QuickBooks® desktop version, but has the ability to be accessed from any device at any time. Just as in QuickBooks®... More →

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