Colorado’s corporate income tax rate is a flat 4.63 percent assessed on Colorado net income, defined as the corporation’s federal taxable income, with some modifications. Colorado allows businesses to use either a two-factor formula (revenue and property) or a three-factor formula (revenue, property and payroll), whichever is less, in determining their income tax.
For details see http://www.colorado.gov/revenue/tax
Retail sales tax varies by jurisdiction in Douglas County.
Sales Tax Information: http://www.douglas.co.us/finance/Sales_Tax_Rates.html
Business Personal Property Tax Information: http://www.douglas.co.us/assessor/appraisal/business-personal-property/
Property Tax Calculations: http://www.douglas.co.us/assessor/property-taxes/property-tax-calculations/