How is the PEO’s tax rate determined?
A. For 2008, the PEO’s tax rate will be calculated the same way as it has been in the past, using the experience of the PEO and its client companies prior to July 1, 2007. The department has proposed rules to outline how tax rates will be determined in future years (WAC 192-300-220). Note: Only PEOs with employees in Washington state will be assigned an unemployment tax rate for Washington, but all PEOs that have client companies with employees in Washington must register with us. Q.