Using the Online Tax & License Portal

How to log in

  • City Code: This is the first 5 digits of your City of Louisville License Number
    • This can be found on your License, Account Balance Letters, Renewal letters, and Missing Filer Letters.
  • Password: The default is the last 4 digits of your FEIN
    • This is the default set during initial account setup. If it doesn’t work, the account password has been changed. You can use the “Lost Your Password?” feature to get a new temporary password.

Filing a tax return online

Renewing your Sales/Use Tax License online

Sales Tax Division

Phone: (303) 335-4515
Email Sales Tax Division
Our address:
City Hall
749 Main St
Louisville, CO 80027
Our office hours:
Monday-Thursday: 8 a.m.–4 p.m.

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