IRS Home Page:
http://www.irs.ustreas.gov/

IRS Forms:
http://www.irs.ustreas.gov/prod/forms_pubs/index.html

Colorado Forms:
http://www.revenue.state.co.us/forms_download.html

Information for new Colorado businesses:
http://www.revenue.state.co.us/TPS_dir/businesstax.html

Colorado Business Registration Forms:
http://www.revenue.state.co.us/busregforms.html

Colorado Sales Tax Rates:
http://www.revenue.state.co.us/TPS_dir/drp1002.html

General Information Colorado Taxes:
http://www.revenue.state.co.us/fyi/html/generl05.html

Colorado Secretary of State Business Center:
http://www.sos.state.co.us/pubs/business/main.htm

Colorado Sales Tax Information:
http://www.revenue.state.co.us/TPS_dir/Sales.html

Links to all 50 States Department of Revenue:
http://aicpa.org/yellow/ypgsta.htm