> ## 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.
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# How to setup Autofile for Puerto Rico

| 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-puerto-rico-1lnyo1k/) first.

### Provide State Sales Tax ID

If you see your state sales tax ID by logging into [Puerto Rico SURI](https://suri.hacienda.pr.gov/).

![](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10755-1_16omn20.png)

### Provide Puerto Rico Letter ID

A Letter ID is a unique number starting with the letter 'L', included in every letter generated in SURI. This ID is always located in the upper-right part of the letter and you can use it as reference if you need to contact the Department of the Treasury with issues related to the letter.