How to setup Autofile for Missouri

This is a state-specific guide. Learn about setting up Autofile in general here.Just finished registration? Please read the registration guide first.

Missouri MyTax requires merchants to grant access to third-parties. Please grant access to Sidr Tax by following the steps below.

Fill in the Sidr Tax third-party account information:

Click "Next".

Select the "View" check box on the left.

Put a early enough start date, for example, 01/01/2020.

Select Assignments: "Full Access".

Click "Save".

Review the Authorized Tax Type Functions and click "Confirm".

We will receive a notification once you grant us access and will review your account. After the review, we will activate your Missouri Autofile!

Updated on: 06/27/2025

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