608-243-5000 or 800-236-5560
fax - 608-243-5027
608-243-5000 or 800-236-5560 option 2
if you have specific questions about your account, please log into Online Branch and use the Message feature to send us a secured message.
If you have a general question or would like to send feedback, send us an email at MemberService@SummitCreditUnion.com
Do not send personal or sensitive information when using email links.
For regular mail, please use Summit's general mailing address:
PO Box 8046
Madison, WI 53708-8046
For overnight envelopes, please use the Summit headquarter's physical address (unless your recipient specifies otherwise):
4800 American Parkway
Madison, WI 53718