Business Banking

O2 Business Banking

Have questions? Need to talk? We’re here for you — that’s the beauty of a community-based commercial bank. Whether your preference is to communicate by phone, online or to arrange a face-to-face meeting with a business banker, we are available.


Old Second National Bank is committed to protecting your privacy and ensuring your private information is secure. For your protection, do not send sensitive information such as account numbers, Social Security Numbers or private information through email.

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