Property tax due dates in San Bernardino County fall on a two-installment schedule set by California law. The first installment is due November 1 and becomes delinquent after 5:00 p.m. on December 10.1California Legislative Information. California Code RTC 26172California Legislative Information. California Code RTC 26063California Public Law. California Code RTC 2618 Miss either cutoff and a 10% penalty attaches automatically.
The Two Installments at a Glance
One annual secured bill arrives in the fall and covers the fiscal year running July 1 through June 30. It splits into two equal installments. The first covers July 1 through December 31; the second covers January 1 through June 30. You can pay both at once when the bill arrives, and many owners do that just to stop tracking a second date.
When December 10 or April 10 lands on a Saturday, Sunday, or legal holiday, the delinquency cutoff moves to the close of business on the next business day.4California State Board of Equalization. Property Tax Calendar That happens more often than people realize, so confirm the current year’s exact cutoff on the Treasurer-Tax Collector’s site in the weeks before each deadline.
What a Late Payment Costs
The penalties are automatic. A late first installment picks up a flat 10% penalty on the unpaid amount.1California Legislative Information. California Code RTC 2617 A late second installment adds a 10% penalty plus a $10 cost.5San Bernardino County Auditor-Controller/Treasurer/Tax Collector. Tax Collector Division On a $3,000 installment that penalty alone is $300, and there is no partial credit for being a day or two late.
Penalty cancellation requests exist, but the bar is high. A clean payment history is not a qualifying reason. Neither is a bank bill-pay service that mailed the check in time but reached the county late. The Revenue and Taxation Code limits cancellation to narrow circumstances, and most “I forgot” or “my bank was slow” requests get denied.6San Bernardino County Auditor-Controller/Treasurer/Tax Collector. Penalty Waiver Request
What Happens If You Don’t Pay at All
If any part of the annual tax is still unpaid at 12:01 a.m. on July 1, the property is declared tax-defaulted by operation of law.7California Legislative Information. California Code RTC 3436 From that July 1, redemption penalties accrue at 1.5% per month on the unpaid taxes. That is 18% a year, and it compounds each fiscal year the balance sits.
After five years in default, the tax collector gains authority to sell the property at public auction to recover the taxes owed.8California Legislative Information. California Code RTC 3691 For nonresidential commercial property, the clock is three years. You can redeem the property at any point before the sale by paying everything owed, but the total climbs fast. Waiting two years can mean paying nearly 40% more than the original tax.
Supplemental Bills Have Their Own Dates
If you recently bought the property or finished new construction, expect a separate supplemental bill in addition to the regular annual bill. California requires the assessor to reassess when ownership changes or improvements are completed, and the supplemental bill captures the difference between the old and new assessed values, prorated for the months left in the fiscal year.
Supplemental bills carry their own due dates printed on the bill itself, and those dates are not the standard November 1 and February 1. Late penalties apply to supplemental bills the same way they apply to regular ones, so treat the printed deadlines as firm.9San Bernardino County Auditor-Controller/Treasurer/Tax Collector. Supplemental Tax Bill Info First-time buyers often get caught here because the bill arrives outside the normal cycle.
How to Pay Before the Deadline
Every parcel has an Assessor’s Parcel Number (APN) printed in the top right corner of the bill. If the paper bill is gone, look up the APN and current balance through the Treasurer-Tax Collector’s online portal at sbcountyatc.gov using the property address.
Online or In Person
The county accepts online payments through its website. Electronic checks are generally free of added fees. Credit and debit cards carry a convenience fee that typically runs 2.1% to 2.3% of the transaction, which adds up quickly on a bill of several thousand dollars. In-person payments go to the Tax Collector’s office at 268 West Hospitality Lane, First Floor, San Bernardino, CA 92415.10San Bernardino County. County Officials Warn Taxpayers of Property Tax Payment Scam
Paying by Mail
California treats the U.S. Postal Service postmark as the received date, not the date the county opens the envelope.11California Legislative Information. California Code RTC 2512 – Medium of Payment A check postmarked December 10 counts as timely even if it arrives December 15. Two traps to know. A postage meter stamp is not a USPS postmark. A bank’s online bill-pay service that mails a check for you may not get a USPS postmark at all. In both cases the county uses the date it physically receives the payment. If you are mailing close to the deadline, get a certificate of mailing at the post office counter so you have proof of the postmark date.
When Your Mortgage Pays the Tax
If your mortgage includes an escrow account, the servicer collects part of the estimated tax with each monthly payment and pays the county directly. Even so, the county holds the property owner responsible for timely payment. If your servicer misses a deadline, the penalty lands on your tax account, not theirs. Check your county tax record online at least once a year to confirm the mortgage company actually made the payment and that the account shows a zero balance after each installment date.