Backers of a possible San Diego sales tax increase say they will use new polling that tested a half-cent hike instead of a full-cent hike to decide in coming days whether to target the November ballot. If they don’t target the November ballot, they would likely target either the March 2028 ballot or the November 2028 ballot, Barrios said. It would have raised the city’s sales tax rate from the lowest in the county at 7.75% to the highest at 8.75%. The new measure would raise the city’s sales tax rate from 7.75% to either 8.25%, 8.5% or 8.75%. Another complicating factor could be the presence of additional revenue measures on the November 2026 ballot, including a possible measure to raise the sales tax countywide.