Supplemental Property Tax Bill After You Buy a California Home: What It Is and When It Is Due
A California supplemental property tax bill is due on the date mailed. If yours was mailed in July through October 2026, the first installment is delinquent after 5 p.m. on Thursday, December 10, 2026, and the second in April 2027, under Revenue and Taxation Code section 75.52.
