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There are a few ways to e-file sales tax returns:
- Revenue Online. After you create your own User ID and Password for the income tax account, you may file a return through Revenue Online. If you have more than one business location, you must file a separate return in Revenue Online for each location. For additional e-file options for businesses with more than one location, see Using an Approved Sales Tax Software or Multiple Location Filers below.
- Using an Approved Sales Tax Software Vendor.
- Multiple Location Filers that do not use approved software: See the Sales Tax Spreadsheet Filing page.
- Software Developers - Sales Tax XML
If you cannot file through Revenue Online or another electronic method, please download the form you need. Beginning with sales on January 1, 2018, the Colorado Department of Revenue (CDOR) will be requiring ALL Colorado sales tax licensees to report and pay sales tax to the penny, regardless of filing format.
Sales Tax Services in Revenue Online
Login Required | No Login Required |
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How-To Videos
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How to File a Sales Tax Return in Revenue Online
How to File the Colorado Retail Sales Tax Return (DR 0100) using Revenue Online for filing periods beginning on January 1, 2020 and after. To watch the YouTube Video on Filing DR 0100, click here.
How to File a Special Event Sales Tax Return
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How to Set Up a Business Revenue Online Account
Out-of-State Retailer Registration
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How to Add Non-Physical Sites in Revenue Online
How to Verify a Sales Tax License
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Username Recovery & Password Reset
How to Amend a Colorado Retail Sales Tax Return
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