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  • Tax and Licensing Division

Sales and Use Tax

Sales and Use Tax

Sales and Use Tax Online Payment

It's quick and easy to pay sales and use taxes online using the city's new payment portal system. For questions about online payments, please review our Sales Tax Online Frequently Asked Questions at Sales Tax Online Filing FAQ's pdf.

The Online System only accepts a 6-digit  account format.

You MUST enter zeros in front of your account number to equal a total of 6 digits in order for your account to be found and added to your profile.

If you are still experiencing difficulty related to your Online Filing or other Sales Tax related issues,  please email Staff at 

Please sure to put your Business Name first in the subject line.


Sales and Use Tax Division

Our main purpose is to provide customer service in order to assist the Boulder taxpaying community with sales, use and various other tax reporting requirements required by Chapters 3-1 through 3-7 of the Boulder Revised Code (B.R.C, 1981). The division provides business licensing services and collects and accounts for a variety of tax revenues.

Key functions supported by the Sales and Use Tax Staff Members include:

  • Collection of sales, use and other taxes; provide tax return preparation and business licensing assistance; process and account for tax returns filed.
  • Provide construction use tax reconciliation return filing support; process and review tax returns.
  • Tax collection and delinquent filing processes - contact delinquent taxpayers and work with them to bring the accounts into compliance.
  • Conduct tax audits - the division has an active audit program designed to educate taxpayers in order to improve reporting compliance and to recover unpaid tax revenue.
  • Conduct new business reviews - an educational opportunity between the taxpayer and the City to educate and assist businesses in understanding tax reporting requirements they may not be familiar with and to answer tax related questions.
  • Provide information - answer various tax related reporting and licensing questions from taxpayers.
  • Provide information regarding the sales and use tax portion of the Boulder municipal code.

You may email us at:  You may also call 303-441-3050 for general tax topics information or call this same number (then DO NOT select option 1 for touch tone) to speak directly to a sales tax staff member.

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