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*Speak with a representative on your time: Now offering extended after-hours support.
PO Box 41314
Houston, TX 77241-1314
PLEASE NOTE: Allegiance Bank will never request that you provide personal or financial information via unsecured e-mail. Please report to us any suspicious e-mails you receive that request personal or financial information and claim to be from Allegiance Bank.
24/7 Telephone Banking 844-334-3814
Debit/ATM Card Support
Business Hours 8:00 AM - 5:00 PM: 281-894-3200
To report your lost or stolen Debit/ATM Card after business hours: 800-500-1044
For Debit Card Transaction Disputes Only:
Monday - Friday 7:00 AM - 3:45 PM: 844-865-5533
To activate a Debit Card: 866-633-5293 or Internationally: 770-248-5774
To return Fraud Service Center phone calls to verify potentially fraudulent transactions: 800-369-4887