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Question: I have a single location. Can I file my sales tax return online?
For several years, retailers have been able to file zero sales tax returns online with the Colorado Department of Revenue, Now, CDOR is expanding our online sales tax filing capabilities to include a new service for retailers with only one location. Single location businesses may now file and pay state sales tax and state-collected local sales taxes. Businesses must have submitted a paper sales tax filing and payment to the Department of Revenue at least once before using the online system. You can sign up to access your sales tax account online, view previously filed returns, verify payments made on your account, make payments, file protests and much more through Revenue Online

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