When are property tax installments due in San Bernardino and Riverside counties?

California's secured property tax is billed in two installments each year, and San Bernardino and Riverside counties follow the same calendar. For the 2026 to 2027 tax year, the first installment is due November 1, 2026 and becomes delinquent after 5:00 p.m. on December 10, 2026, when a 10 percent penalty applies. The second installment is due February 1, 2027 and becomes delinquent after 5:00 p.m. on April 10, 2027. If you pay through a mortgage impound account, both installments are handled automatically. When you are considering a home, Julian Cesar checks the tax records on the property, including Mello-Roos and special assessments, so the full annual bill is on the table before you make an offer.