Customer
Service
Contact Us

Guaranty Bank wants to make it easy and convenient to contact us by phone, email or in person at one of our branch locations.

24-Hour Anytime Banking

We have everything you need to bank efficiently right at your fingertips. Take 24-Hour Anytime Banking for a test-drive and let the friendly voice guide you through the options. It's that simple, and another free service from Guaranty Bank.
  • 303.293.2938 - Denver Metro
  • 877.354.2265 - Toll-Free

Customer Service

Email us at CustomerCare@GuarantyBankCO.com or call our 24-hour service numbers.

  • Toll free: 1.877.609.5500
  • Denver: 303.293.5500
  • Northern Colorado: 970.454.4220

To report a lost or stolen Guaranty Bank ATM or debit card call: 800.500.1044
To report a lost or stolen Guaranty Bank credit card call: 800.558.3424


Treasury Management -
Email us at TreasuryMgmt@GuarantyBankCO.com or call us.

  • Denver: 303.675.1160
  • Northern Colorado: 970.454.4240

Trust Department - Call 303.774.2995.

To report a lost or stolen card, please contact customer service during normal business hours. If it is after hours, please call 800.500.1044.

 
24-Hour Customer Service

Denver 303.293.5500 | Northern Colorado 970.454.4220 | Toll-free 1.877.609.5500