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Thank you for visiting our website.

Thompson & Lengacher Co., P.C. 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 us., 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 Maryville, we have years of valuable experience assisting professionals with their accounting needs.

This is Susan. She will welcome you to our office. As a dog lover, she keeps treats to share with dogs that join their owners to our office. Call and Susan will direct you to whom you need.

It is with deep sadness that we inform our friends that our long time office manager, Kathy Engeling has passed away. Kathy worked in our office over 12 years and was not only a friend, but a family member. We will miss her.

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

  • Telephone...
  • (618) 288-9877
  • Fax...
  • (618) 288-1110
  • Thompson & Lengacher Co., P.C.
  • 9A Professional Park Dr
  • Maryville, IL 62062

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