Contact Us

Contact Mainstar Trust to learn more about our services.


Visit our Frequently Asked Questions sections for answers to common questions.



  • Need to submit an application for a new account? Click here to upload those documents securely to Mainstar.


  • Asset Sponsors submitting the Asset Information Worksheet and required documents may do so by clicking here to upload securely.



Business Hours

Monday - Thursday 8:00 - 4:30, Friday 8:00 - 3:00

Toll Free Phone   1-800-521-9897

214 W. 9th Street, Onaga KS 66521

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