Walnut Creek City Council to put half-cent sales tax on November ballot Walnut Creek voters will decide in November whether the city’s sales tax should go up a half-cent. The City Council voted 5-0 at its July 19 meeting to put a measure on the Nov. 8 ballot for the half-cent increase that would bring Walnut Creek’s sales tax rate to 9.25%, which is what Pittsburg and Pleasant Hill residents