building skdo


(815) 937-1997 (Bourbonnais)
(708) 946-3232 (Beecher)
(815) 426-2532 (Herscher)
(815) 942-2554 (Morris)


(815) 935-0360 (Bourbonnais)
(815) 935-0360 (Beecher)
(815) 426-2586 (Herscher)
(815) 942-9212 (Morris)

Main Office Hours

Summer hours will begin
Friday, May 3, 2019 thru Friday, September 27, 2019

Hours are as follows:

Monday- Thursday - 8:00am-5:00 pm

Friday - 8:00am-1:00 pm

(Herscher Office hours - Monday-Friday -8:00-5:00)

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Smith, Koelling, Dykstra, & Ohm, P.C. is an independent member of the BDO Alliance USA, which allows us to expand the services offered to clients by drawing on the resources of BDO USA, LLP and other Alliance members.


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Wayne Koelling

Wayne Koelling is a shareholder at SKDO and has been a CPA since 1975. He joined the firm in 1976 and became a shareholder in 1979. His degree in accounting is from the University of Illinois and included an emphasis on computerized accounting and management systems. As chairman of the SKDO Technology Committee, Wayne strives to enhance our systems and procedures to benefit and serve our clients at a high level. By improving performance, the firm is able to provide services in the most efficient manner possible.

Wayne is a member of our Tax Services Department and achieved the PFS designation as a Personal Financial Specialist from the AICPA. He has also earned the professional designation of Certified Specialist in Estate Planning. This designation was awarded by The National Institute for Excellence in Professional Education, LLC in conjunction with various state CPA societies, including the Illinois CPA Foundation. Besides passing the required examinations, CSEP and PFS candidates must meet education, experience and ethical standards before being accepted. The training and experience needed to achieve the PFS and CSEP designations have been very valuable in serving the firm's many family-owned businesses and their shareholders.

Through his years of experience in public accounting, Wayne has worked with companies of all sizes in numerous types of industries and services. This diversified clientele are provided with a myriad of services including accounting, tax compliance and planning, as well as management and financial consulting.

Wayne is a member of the AICPA and the Illinois CPA Society. He is active in public service and has served on numerous boards and committees over the years. He enjoys live music, playing guitar, sports, and the outdoors with his wife, four children and grandchildren.