> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.sidr.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to setup Autofile for Missouri

| This is a state-specific guide. Learn about setting up Autofile in general [here](/en-us/article/how-to-setup-sales-tax-autofile-1vxgwce/).
| Just finished registration? Please read the [registration guide](/en-us/article/how-to-register-for-a-sales-tax-permit-in-missouri-1j10guu/) first.

### Find and Provide Sales Tax ID

Login to [Missouri MyTax](https://mytax.mo.gov/rptp/portal/home), and find your Sales Tax ID below.

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10619_fhpx3h.png)

### Grant access to [Missouri MyTax](https://mytax.mo.gov/rptp/portal/home)

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

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10542_1386ma.png)

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10620_1xsv1ha.png)

Fill in the Sidr Tax third-party account information:
* User ID: sidrtax
* Registration Confirmation Number: 9901006728973
Click "Next".

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10543_1lynwlk.png)

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".

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10621_idwfxv.png)

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

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10545_gvtzz9.png)

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