Contact Us By Email

General Tax Questions

DOR_TaxpayerService@state.co.us
Please allow 3-4 business weeks for an email response for general tax inquiries. For a faster response, please call the Taxpayer Helpline at (303) 238-7378.
 

Tax Unit Contact Emails

Office of Public Information & Education: DOR_TaxInfoEmail@state.co.us
Excise Accounting Unit: DOR_ExciseTax@state.co.us
Fuel Tax Unit: DOR_FuelTax@state.co.us
Marijuana Tax Unit: DOR_MarijuanaTaxes@state.co.us
Collections: DOR_Collections@state.co.us
Compliance: DOR_Compliance@state.co.us
Bankruptcy: DOR_TAC_Bankruptcy@state.co.us
Discovery: DOR_Discovery@state.co.us
Criminal Tax Investigations: DOR_TaxInvestigations@state.co.us
Office of Tax Policy & Analysis: DOR_TaxPolicy@state.co.us


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