An Administrator for a business is typically an owner, officer, member, partner, trustee, receiver or authorized representative for a business. To register as an Administrator, you must be identified on the business tax registration with the Department and provide your First and Last Name, Social Security Number, Date of Birth, Phone Number and E-mail Address. To be authorized on a business, you will need the Business’s Missouri Tax Identification Number, Business PIN number, and Federal Identification Number, if applicable. To add an authorized representative to your business account, complete and E-mail a Form 126 Registration or Exemption Change Request to mytaxmissouri@dor.mo.gov for processing.
To register for a MyTax Missouri account, follow the steps to register as an “Administrator” of your Individual Income Tax or Property Tax Credit account. After clicking the “New User? Register Here” button located under the login box, select the option to register as an “Administrator.” Individual income tax and property tax credit filers will use information from their most recently filed income tax return or property tax credit claim to complete a request for access. Upon completion, a Personal Identification Number (PIN) will be mailed to the address on file. Once you receive this PIN, login to MyTax Missouri to complete your registration. (Individuals must have a prior filing history with the Department to be eligible to register as an Administrator.)
A Government User is a designated employee of a political subdivision or a state agency who is authorized to access the portal account. To register as a Government User, you must apply by completing the applicable form: Form 4379 - Request for Information or Audit of Local Sales and Use Tax Records, Form 4379A - Local License Renewal Records and Online Access Request, or Form 4379B - Request for Information of State Agency License No Tax Due Online Access. To access the online tax compliance inquiry system you will need to register and have your user ID provided to the department on an MOU or Affidavit. The Department will contact you by e-mail when your application is approved.
Typically, an Authorized Preparer is an attorney, certified public accountant, tax preparer or enrolled agent. The Administrator must grant you access to the account after your registration is complete. To register as an Authorized Preparer, you must provide your First and Last Name, Phone Number and E-mail Address.
