The Washington State Legislature is currently considering a revenue package that includes a temporary increase in the beer tax. Here is some information about beer taxes from a prevention point of view.
From the Marin Institute:
Alcohol Tax FAQ
Neglected and Outdated Beer Taxes
Charge for Harm - Taxes and Fees
Americans Overwhelmingly Support Increase in State Alcohol Tax
From the Centers for Disease Control and Prevention:
Underage Drinking fact sheet lists increasing alcohol excise taxes as a strategy for reducing underage drinking.