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% .
Update your information here. Overview of King County, WA Taxes. King County, Washingtonâs average effective property tax rate is 1.02%. Thatâs right in line with the state of Washingtonâs average effective property tax rate of 1.08%. Not in Washington?