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.
Seattle, WA Sales Tax Rate. The current total local sales tax rate in Seattle, WA is 9.600% . The December 2014 total local sales tax rate was 9.500% .
(a) City, county and municipal rates vary. These rates are weighted by population to compute an average local tax rate. (b) Three states levy mandatory, statewide, local add-on sales taxes at the state level: California (1.25%), Utah (1.25%), Virginia (1%), we include these in their state sales tax.