When applying for a business license or renewing, the automated system will calculate your business tax for you. When you click on “here” under Business License Requirements, you will be redirected to the Brea Business License portal managed by HdL Companies. However, if you’d like to calculate the tax, click here for easy to follow instructions. Keep in mind, the example provided is for a Business License Tax on Service only. Tax rates vary based on the type of business activity.