Revenue/Sales Tax

The Town sales tax rate is 4 percent

The Town's Revenue Division is responsible for licensing businesses that operate within Town and collecting the proper amount of sales tax. 

Access a blank sales tax return. 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.
Affidavit of Exempt Sales
Address Locator Guide