This bill establishes a new funding mechanism for municipalities participating in regional 911 emergency communications systems in Washington State. Specifically, it mandates that counties located east of the Cascade Mountains, with populations between 530,000 and 1,500,000, must transfer a portion of their tax revenues to local governments operating municipal 911 systems that receive transferred emergency calls. The transfer amount is calculated based on the county's tax revenues, the total number of emergency calls received, and the number of calls transferred to the municipal system, with the final amount being 80% of the calculated figure.

Additionally, the bill specifies that these transfers must occur quarterly and defines a "regional 911 emergency communications system" as one operated by a county that handles emergency calls for multiple local law enforcement and fire agencies. The act is set to take effect on January 1, 2026.