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> Use this file to discover available pages before exploring further.
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# How to setup Autofile for Mississippi

| 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-mississippi-1hcnbwv/) first.

### Find and Provide Sales Tax ID

Login to [Mississippi Tap](https://tap.dor.ms.gov/), and find your Sales Tax ID below.

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10751_1nhwgz6.png)

### Find and Provide Letter ID

You can find the letter ID on any Mississippi correspondences. The letter ID should comprise an L followed by 10 digits. Example: L123456789.

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10752_agne4k.png)