Custom solutions with one-on-one support.

Find a payment processing program that fits your needs and an expert team to keep it humming along. Contact a representative below to get started.


Grace Bayer

St. Louis MO, Columbia MO, Kansas City KS, Kansas City MO and Phoenix AZ

636-345-9587
  GBayer@greatsouthernbank.com




Headshot Grace Bayer.


Headshot Todd Flesch.

Todd Flesch

Minnesota, Iowa, Sioux City NE, Atlanta GA, Charlotte NC, Chicago IL and Omaha NE

515-473-6089
  TFlesch@greatsouthernbank.com



Sam Waltz

Rogers AR, Iola KS, Parsons KS, Ottawa KS, Paola, KS, Southeast and Southwest MO, Joplin MO, Springfield MO, Dallas TX and Denver CO

417-895-4705
  Send a message




Headshot Sam Waltz.




















































Experienced Partners

A payment system is only as good as the company behind it. Great Southern is proud to partner with industry leader BASYS Processing to bring you innovative solutions backed by outstanding customer service.

BASYS logo.
BasysPro.com








































































Live Teller ATM

Our friendly live tellers can help you get your banking done when it's convenient for you. Cash or deposit a check, reset your PIN, get assistance with your accounts, and more!

Financial Wellness

No matter your stage of life, we’re here to get you on the right path with learning tools tailored to you. Let’s get started.