Welcome to Thomas W. Hammar C.P.A., P.C.! If you are looking for a blend of personal service and expertise you have come to the right place. We have built our practice one client at a time. We have seasoned professionals who can assist you in any number of diverse services.

We are located at 2300 5th Avenue in Rock Island, Illinois and have been serving the Quad Cities area for over 25 years. Please contact us at (309) 788-5543 or email tom@hammarcpa.com so we can start serving you today.


Our services include, but are not limited to:

  • Payroll
  • Personal and Business Tax Preparation and Advice
  • Accounting Support Services
  • Eldercare
  • Business Consulting for Small Business Owners and Not-for-Profits


We promise you will be more than just a billing code to our firm!


The 2014 Federal W-4 form is now available!


 Federal W-4 Income Tax Form




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