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No. Activation is based on your Social Security number (SSN) if you are a sole proprietor or your Federal Employer Identification Number (FEIN) for all other businesses. This means that your company can only have one MyTax Illinois account per FEIN or SSN.
Your company will be required to designate a “Primary User” to set up your MyTax Illinois account. The primary user then has the ability to grant others access.