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ATTN: Clients of Mark Hekkema

Well, that day has come and I wanted to let all my clients know that I have decided to retire at the end of 2023. It has been a wonderful career working with all of my clients, assisting and helping in many areas. We all have watched each other's family grow up, shared stories and laughs. I wanted to thank each one who has sat across from my desk for your trust, allowing me to help and support throughout my career here at Cox Accounting.

From the day i started in the accounting profession after college which spans 40+ years of which the last 22 have been spent here, it has been a great journey. Now it’s time to experience the next journey which I truly look forward to with my family & friends. I know I leave all of you in good hands with the Cox Accounting group. From the bottom of my heart, THANK YOU and take care. 

Mark Hekkema


Cox Accounting & Tax Service, LLC is a full-service accounting firm serving clients throughout the area, dedicated to providing our clients with professional, personalized services and guidance in a wide range of financial and business needs.

On this website, you will find information about Cox Accounting & Tax Service, LLC, including our list of services. We have also provided you with online resources to assist in the tax process and financial decision-making. These tools include downloadable tax forms and publications, financial calculators, news and links to other useful sites. Whether you are an individual or business in or around Muskegon, Cox Accounting & Tax Service, LLC has years of valuable experience assisting professionals with their accounting needs.

We welcome any questions or comments you may have. Feel free to contact us at any time:

(Cox Accounting is not affiliated with Fox Financial, also located at Cox Accounting)

  • Telephone...
  • (231) 744-3827
  • Fax...
  • (231) 744-5286
  • Cox Accounting & Tax Service, LLC
  • 1975 Holton Rd
  • Muskegon, MI 49445

You can also send us a message directly through the contact page of this website.