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.
With state gas taxes now up to 44.5 cents a gallon, adding in the current federal gas tax of 18.4 cents, the total per gallon gas tax in Washington is now 62.9 cents. The state increase was part of a $16 billion, 16-year transportation revenue package approved by the Legislature and signed by the governor earlier this summer.