System Upgrade
We Are Upgrading Our Systems
Prosperity Bank is committed to providing excellent service and embracing innovative solutions to meet your financial needs. As part of this commitment, we are excited to announce we will be upgrading to a real-time processing system on February 17, 2026. This investment is designed to enhance your banking experience and will allow us to serve you with even greater efficiency and reliability, now and in the future.
For important highlights about how the system upgrade affects you and your account(s), please read our Customer Letter.
Banking Services Schedule
Online Banking
Online Banking for consumer and non-treasury business users will be unavailable from Friday, February 13 at 8:00 p.m., through Tuesday, February 17 at 7:00 a.m.
Treasury Center
Treasury Center will be unavailable from Friday, February 13 at 8:00 p.m., through Tuesday, February 17 at 7:00 a.m.
Fastline
Fastline will be unavailable from Sunday, February 15 at 7:00 a.m., through Tuesday, February 17 at 7:00 a.m.
Zelle®
Customers will not be able to send or receive Zelle® payments from Friday, February 13 at 7:00 p.m. through Tuesday, February 17 at 7:00 a.m.
If someone attempts to send a Zelle® payment to a Prosperity Bank customer during this time, the sender will receive a message indicating that the payment cannot be processed.
Zelle® service will resume at 7:00 a.m. on Tuesday, February 17.
System Upgrade Hours
We remain committed to providing you with excellent customer service throughout this system upgrade and beyond. For questions, our Customer Service Center is available to help at 800-531-1401.
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