Local Sales/Use Tax by Address -- "Hold Harmless" Tax Rates Services

Find Local Taxes by Address
The following list of electronic address database providers are currently certified by the department. Taxpayers who use these certified databases will not be liable for sales and use taxes otherwise owed to the State of Colorado and state-collected municipalities, counties and special districts if the database incorrectly designates the location of a sale, storage, use or consumption of taxable tangible personal property or services. This is the "hold harmless" provision. See also: Hold Harmless Application. Please email the application to dor_localgovsupport@state.co.us. More information is available by watching our How to find Information on Colorado Sales & Use Tax Rates video.
 
Participating Home-Rule Cities and Counties
Arvada, Aurora, Boulder, Brighton, Denver, Longmont, Northglenn, Silverthorne, Westminster, Wheat Ridge, and Woodland Park have enacted ordinances that hold taxpayers harmless if they rely on these certified databases.  To visit a local government webpage, see the Colorado Department of Local Affairs, Active Colorado Municipalities
 
Certified Electronic Address Databases
Please note that by clicking on any of these links, you will leave the Colorado Department of Revenue website and enter a privately owned website created, operated and maintained by a private business. The Colorado Department of Revenue is not endorsing its products, services, or privacy or security policies. We recommend you review the business's information collection policy or terms and conditions to fully understand what information is collected by this private business.
 
CoreLogic Dealr, Inc.
Pitney Bowes Software
Sovos Compliance TTR, Inc.                                   
No Free Lookup Tool Free Lookup Tool Free Lookup Tool No Free Lookup Tool
Local Government Access Contact:
CoreLogic Client Services: IS.ClientServices_EM@corelogic.com
Product Contact:
720-772-7706
Local Government Access Contact:
Tony Burton: GeoTAX Product Manager
720-564-3079
 
Product Contact:
http://sovos.com/contact-us/​
860-532-0829
Product Contact:
COrates@ttrus.com
866-578-8193 or 503-472-8500      
System Identification:
CoreLogic Xiance PxPoint
Effective Date of Certification: 
January 11, 2017
Expiration Date of Certification:
January 10, 2019
Company Information
System Identification:
dealr.tax powered by dealr.cloud
Effective Date of Certification: 
July 17, 2018
Expiration Date of Certification:
July 16, 2021
Company Information
System Identification:
GeoTAX 7.2., located at Boulder, Colorado.
Effective Date of Certification:
August 22, 2016
Expiration Date of Certification:
September 26, 2021
Company Information
System Identification:  
Sovos GTD v. 8.4+, Taxify.co
Effective Date of Certification:
July 20, 2016
Expiration Date of Certification:  
September 7, 2021
System Identification:  
TTR, Inc. – The Tax Answer Company
Effective Date of Certification: 
October 17, 2018
Expiration Date of Certification:  
October 16, 2021