> ## 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 Colorado | 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-colorado-pr33b0/) first. ### Overview Colorado has 2 separate systems. They both allow filing sales tax, but there are differences. Before we go over the 2 systems, we must first clarify the concept of *home-rule jurisdictions*. According to the Colorado DOR website: Cities that have enacted a "home-rule" charter, and which have elected to administer their own local sales and use taxes are referred to as "self-collected". Self-collected jurisdictions have the right to establish their own regulations regarding those goods and services upon which to impose their local sales and use taxes. Self-collected cities must be contacted directly for that information. * [Revenue Online](https://www.colorado.gov/revenueonline/_/) is the default system of the Colorado Department of Revenue. It provides functionality that covers almost everything, including filing sales tax and registration. However, for sales tax, Revenue Online only covers Colorado state taxes and doesn't support any home-rules jurisdictions. * [SUTS](https://colorado.munirevs.com/) is the newer system for Colorado sales tax. It not only covers state taxes but also covers a majority of home-rule jurisdictions. There are only a handful of jurisdictions not participating at the moment. You can check out the latest participant list [here](https://colorado.munirevs.com/show-page/?page=26). **Access to Revenue Online is REQUIRED regardless of whether you file with SUTS.** When filling out the autofile configuration form, you will need to select one of the 2 systems. Please note that if you choose Revenue Online, Sidr Tax doesn't cover home-rule jurisdictions. If you choose SUTS, Sidr Tax only covers home-rules jurisdictions supported by SUTS. ### Grant third-party access to [Revenue Online](https://www.colorado.gov/revenueonline/_/) **This is REQUIRED even if you file with SUTS**. Click on the **Manage My Profile** on the top right corner. ![](https://storage.crisp.chat/users/helpdesk/website/b2ab7b99c1d84800/33335d94-bccc-46eb-9ede-8a0cb4_1h6r1wi.png) Click on **More...**, and then **Grant Third Party Access**. ![](https://storage.crisp.chat/users/helpdesk/website/11c9a0797e1f8900/9684ebe8-6dde-45a4-a4ab-9b22bc_y4a6k2.png) Click **Next**. ![](https://storage.crisp.chat/users/helpdesk/website/2433ef71c3d43200/b8240603-4b60-4bca-aebf-b92510_7vumr4.png) On the **Third Party Access Information** page, type in our third-party username: **sidrtax**, and choose **All Periods**. ![](https://storage.crisp.chat/users/helpdesk/website/f13e0c40218c3800/dd5fd537-6d94-45e5-a166-3872dc_1wlf637.png) ### Grant third-party access to [SUTS](https://colorado.munirevs.com/) Sidr Colorado Autofile uses [SUTS](https://colorado.munirevs.com/) because [SUTS](https://colorado.munirevs.com/) supports most of the home-ruled jurisdictions, and this lowers your compliance risk. If you already have a SUTS account, please grant access to Sidr Tax. If you don't have a SUTS account, you can skip this section and Sidr Tax will create one for you. To grant access to [SUTS](https://colorado.munirevs.com/), please fill out the account number and activation code in the Autofile configuration form. You should have been given the activation code when you first signed up [SUTS](https://colorado.munirevs.com/). ![](https://storage.crisp.chat/users/helpdesk/website/e8f67d009d119000/c2061a96-659f-4183-aa27-7bef8b_1ykcxn5.png) If you no longer remember your activation code, you can contact them at Phone: Mon-Fri 8-4:30 at 720-795-7759, Email:  [DOR_SUTS_Help@state.co.us](mailto:DOR_SUTS_Help@state.co.us) ### New [SUTS](https://colorado.munirevs.com/) Account If you do not have a [SUTS](https://colorado.munirevs.com/) account, Sidr Tax will create one for you free of charge. You will be able to see your [SUTS](https://colorado.munirevs.com/) account number and activation code [in the Autofile configuration](https://tax.sidr.io/autofile). You can use the account number and activation code we provide you to gain access to your business too. ![Click "Sign Up"](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10864_1vx0sm2.png) ![Click "Add a Business"](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10865_hgbvrx.png) ![Connect to your business](https://storage.crisp.chat/users/helpdesk/website/e1600c862ede4800/group-10867_1ogt48a.png) You will need to provide your account number and activation code. You can find them in the Autofile configuration. ### Home-ruled Jurisdictions Since Sidr Tax files Colorado sales tax using SUTS, we cover most of the home-ruled jurisdictions. However, there a still a few jurisdictions not support at the moment: * Delta * Sterling * Telluride You can refer to the official listing by Colorado SUTS [here](https://colorado.munirevs.com/show-page/?page=26). ### Retail Delivery Fee If you made more than $500,000 in retail sales in Colorado for the prior year, you will also need to file retail delivery fee. The retail delivery fee is $0.29 for every transaction you delivered to Colorado customers. However, if you business is new in Colorado, or if you made less than $500,000 in retail sales last year, you can simply disregard the retail delivery fee, and your retail delivery fee will be automatically closed. Sidr Tax's AutoFile service does not support the filing of [the Retail Delivery Fee return](https://tax.colorado.gov/retail-delivery-fee). Clients are responsible for submitting this separate return, which is due on the same schedule as regular sales tax returns. Please note that Sidr Tax will not file this return on your behalf, and late submissions may incur state penalties. Should you require assistance with filing your Retail Delivery Fee return, please refer to [Colorado's official explanation](https://tax.colorado.gov/retail-delivery-fee). If you have additional questions, we recommend contacting the [Colorado Department of Revenue](https://cdor.colorado.gov/). If you are exempt from collecting the retail delivery fee, you can disable the fee collection through Shopify Tax. * From your Shopify admin, go to Settings > [Taxes and duties](https://admin.shopify.com/settings/taxes). * Click United States. * In the Regions you’re collecting in section, find Colorado and then click … to access the options menu. * Click Edit sales tax information. * Click Show advanced options. * Under Charge shipping tax & Retail Delivery Fee, select Never. To learn more about Shopify Tax Colorado setting, please refer to [this Shopify support article](https://help.shopify.com/en/manual/taxes/us/us-tax-reference#:~:text=local%20tax%20professional.-,Colorado,-State%20tax%20website).