Open Business Account Sole Proprietor | Business Banking CT | Ion Bank
young woman in carpentry shop working on laptop

In Person

  • The Sole Proprietor and all authorized signers must be present at account opening.

Personal Identification

  • One form of a government issued photo ID is required – CT Driver’s License, CT issued photo ID card, or U.S. Passport.
  • For individuals without a primary document or a primary document where the customer resides out of state, two or more identification documents must be obtained. The combination of the documents must bear a photograph and proof of residence.

Social Security Number (SSN) or Employer Identification Number (EIN) is required

Business Documentation

  • Trade Name Certificate or State issued Business License
  • Note: Trade Name Certificate – may also be known as Assumed Name Certificate, Fictitious Business Name Statement, or DBA

Additional information that will be requested at account opening

  • Business address
  • Phone number
  • Types of transactions and volumes you expect to process
  • Purpose of account
  • Additional information and documentation may be required based on nature of the business

If you have any questions, please contact us at 203.729.4442, toll free 877.729.4442 or

Attention: You are leaving the Ion Bank website.

The links to third party websites are provided solely as a matter of convenience to the visitors of the Ion Bank ("Bank") website. When you use a hyperlink to visit the website of another person or entity, you leave the Bank's website. Your use of hyperlinks to the websites of others is at your own risk.

The content, accuracy, and opinions expressed and other links provided by these resources are not investigated, verified, monitored or endorsed by the Bank. The Bank has no responsibility for products and services offered through another entity's website. The Bank makes no warranties as to the operation or usefulness of other websites. Other website operators may collect information about you and use such information in accordance with their policies and procedures. If you have any questions about another entity's use of your personal information, you should review that entity's privacy policies and/or ask that entity directly. We are not responsible for another entity's use of your information.

Click the OK button to leave Ion Bank's Internet site. Click the Cancel button to return to the previous page.