Quadri-, quadru-, quadr-is a Latin prefix related to the verb quadrare âto make squareâ, quadratus âsquareâ etc. Quad is simply an English shortening of quadrangle, quadruplet etc. So quadri-and quad are actually the same word.
Washington does not allow local jurisdictions like cities or counties to collect a local sales tax. The Washington state sales tax of 6.5% is applicable statewide. You can view the sales tax rates for various cities in Washington here.
The Montana state sales tax rate is 0%, and the average MT sales tax after local surtaxes is 0%. While Montana has no statewide sales tax, some municipalities and cities (especially large tourist destinations) charge their own local sales taxes on most purchases. There are additional taxes on tourism-related businesses such as hotels and campgrounds (7%) and rental car companies (4%).