You can gain access to all your Old Second accounts right from here. Simply click on the appropriate link below to log in to any of your online banking accounts.

First time user? Enroll now.

Access Old Second's digital banking platform for convenient and secure online services, including account management, transactions, and more.

Enter your username and password and click "Sign In". Forgot your username? If you have forgotten your username, we can email it to you after your identification is verified.

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Dec 9, 2025 · To use the O2 Digital Banking app, you must be enrolled as a Old Second National Bank digital banking user. If you currently use our Internet Banking, simply download the app, …

First time user? Enroll now.

Access balances, pay bills, transfer funds, and more with online and mobile tools.

Further, your ability to access and use this website does not in any way constitute a demand or solicitation for payment, and any online payment made by you through this website is done at …

Welcome We’re Old Second because you’re first. We are not the bank we are today without you. For more than 150 years, we’ve grown our business by helping our customers grow first. …