Sales & Use Tax System (SUTS) Support

Need support with SUTS? Call or email us.

Support Representatives are available (except on state holidays)

Monday through Friday, 8:00 a.m. to 4:30 p.m. MT

Sales & Use Tax System (SUTS) Support Line

(720) 795-7759


*** For assistance with other tax matters, select an option below for more information. ***

Email Sales & Use Tax System (SUTS) Support

DOR_SUTS_Help@state.co.us


*** Please note the email is ONLY to be used for assistance with the SUTS filing platform ***