ALERT: Please be aware of fraudulent text messages. We advise you never to enter your credentials or click on links from unknown sources. Prosperity Bank will never ask for your personal information in a text message. Learn more or call Customer Service at 1-800-531-1401 with questions.

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Internet & Mobile Banking - Merger

Welcome to Prosperity Bank. Below you will find helpful information about your accounts.

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Online Banking and Bill Pay Services

On Monday, October 28th, Lone Star State Bank Online Banking accounts will migrate to Prosperity Bank's Online Banking system. We understand that this transition will bring about changes, and as always, we are here to help. To read more about this transition please click on the link below. For further assistance, please contact your local banking center with any questions.

Lone Star Online Banking Customer Letter

First Time Login

When logging into Prosperity Bank's Online banking for the very first time, there are a few steps that must be followed to properly set up your access. Follow the steps shown below to access your account for the very first time. If you have any trouble, please do not hesitate to contact us.

First Time Login Instructions

Conversion Guides

Quicken Conversion 

A guide to help with Quicken conversion. 

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QuickBooks Online Conversion 

A guide to help with QuickBooks Online.

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QuickBooks Desktop Conversion 

A guide to help with QuickBooks Desktop.

Learn More 

Ways to bank

Online Banking

Mobile App

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