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Please accept the MyTax Missouri usage terms to register for a portal account. You will need to provide your First and Last Name, Phone Number, and e-mail address to create a user ID for the Missouri Department of Revenue's MyTax Missouri.
Authorized Preparers: Once you have created a user ID you can provide it to an existing administrator on MyTax Missouri to grant you access to their accounts.
Administrators: You may also request access for your business tax accounts by registering as an Administrator after logging in for the first time.