Welcome to the Town of Castle Rock Sales Tax Administration Division
The mailing address for sales tax returns is:
P.O. Box 151660
Lakewood, CO 80215-8660
If you need a blank sales tax return, please click here
Remember to file the proper tax form using the 4 percent rate for the Town of Castle Rock. If you are an online filer
, we are using a third-party system.
Sales tax returns need to be received by the Town, or postmarked, no later than the 20th of the month due. Monthly filers should submit the previous month’s sales. Quarterly filings are due April 20, July 20, Oct. 20, and Jan. 20. Annual filings are due Jan. 20.
Remember to pay your taxes on time to avoid interest and late fees. Your tax filing options are located on the left sidebar.
If you have questions, call 303-660-1397 or email us