We have included updates about the City of Federal Way excise tax in our bi-monthly Newsletters that are included with your invoice mailings. Use the Search functionality at the top of any page of this site to find Newsletters articles on this topic. One article in particular, "Federal Way and Edgewood Customer Excise Tax", can be found in the July-August 2018, Issue #176 Newsletter. It explains the formula which may be of interest to you.
Bi-monthly Newsletters