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SMB Customer Service Center – where you'll always speak to a person.
SMB Customer Service Center
Service Center Hours
Mon – Fri: 7:30 AM - 6:00 PM
Saturday: 8:00 AM - 12:00 PM
SMB 24/7 Online Banking
Credit Card Balance Inquiry
To Report a Card Lost or Stolen
Debit Card
Mon-Fri, 8-5 (800) 943-8488
After Hours (888) 297-3416
Credit Card (800) 325-3678
Mailing Address
PO Box 814
Carthage, MO 64836
ABA/Routing Number
101203641