The government of Colorado State does not require an all-purpose business license. Instead, licenses are required based on the type of your business and other factors related to it. For instance, a liquor license and a retail sales tax license are required if you intend to open a liquor store. Starting a business requires registration of trade names, obtaining a sales tax license, and opening up a Colorado wage withholding account if you need to employ people to assist you in running your business. Colorado's Secretary of State's office handles registration of trade names. Sales tax licenses are of two types – standard and special events licenses. Standard license is required if you wish to run a regular brick and mortar business in a permanent location. This license costs a one time fee of $50 and $16 non-refundable fee for two-year validity. The license needs to be renewed every two years for a renewal fee of $16. The $50 deposit is refundable for retailers, but not for wholesalers. If your business is operational in several locations, take a sales tax license for each location. A special events license is required if you want to organize/participate in sales events. The license fee for a single sales event is $8, whereas fee for a two-year multiple event license is $16. Individuals who already have a retail or wholesale sales tax license need not pay this fee. Opening a Colorado wage withholding account is free and can be done by filing the Colorado Business Registration. Refer to http://www.revenue.state.co.us/main/home.asp and http://www.sos.state.co.us/ for more information.

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Go to this website for your information because I think they not only deal with the state of colorado business licensing, but they also might be able to help you find out how to apply for all the other documents you need. The website is: http://www.businessnameusa.com/