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IRS Requirements: W-9 & 1099-MISC

The IRS requires all companies to have a current W-9 on file prior to making any payments including property taxes. If you require a W-9 from the County in order for your business to process payment for your secured or unsecured property tax bills, please e-mail your request to W9Requests@octreasurer.gov...

Secured Property Tax Reminder

What is the Secured Property Tax Reminder Program? The Orange County Treasurer-Tax Collector offers an easy and convenient text and/or email reminder service to help you stay informed about important dates for your secured property tax bill. Once subscribed, you’ll receive: A September notification when your secured property tax bill...

Property Tax Frequently Used Numbers

Tax Billing/Payment Information Treasurer Tax-Collector (714) 834-3411 or AskTaxCollector@octreasurer.gov Assessment Values – Real Property Assessor Office (714) 834-2727 Assessment Values – Aircrafts Assessor Office (714)-834-2772 Assessment Values – Boats and Watercrafts Assessor Office (714) 834-2772 Change of Ownership Assessor Office (714) 834-5031 Change of Mailing Address Assessor Office (714) 834-2939...

Property Tax Deadline

April 12, 2021 is the last time to timely pay the...

Quick links to reach key information on our website

taxbill.octreasurer.gov Property tax statement information (view, print, pay) octreasurer.gov/securedreminders Secured tax information subscription by text or email octreasurer.gov/unsecuredreminders Unsecured tax bill information subscription by text or email octreasurer.gov/postmarks Important information about postmarks (changes in local post offices) octreasurer.gov/taxdefaultedproperty Properties with delinquent taxes octreasurer.gov/melloroos Information on Mello Roos (CFD) bond issuances...

Alisa Backstrom, CCMT, CPFIM

Alisa Backstrom was unanimously appointed by the Orange County Board of Supervisors to the Treasury Oversight Comittee on August 28, 2018 for her first term. Ms. Backstrom has been the City Treasurer of Huntington Beach since 2011, having been elected in 2012 and re-elected in 2016. Per the City Charter, Ms. Backstrom is responsible to the electorate for overseeing the receipt, collection, disbursement, custody and safekeeping of all City funds. As well, she is a member of the City’s Deferred Compensation Committee and serves on the board of the Supplemental Retirement Trust. In 2015, Ms. Backstrom served as Secretary for the California Municipal Treasurers Association (CMTA).

Ms. Backstrom graduated from Duke University with a Masters in Business Administration and received a B.A. in Political Science from UCLA. Prior to holding the position of Huntington Beach City Treasurer, she worked in corporate finance and corporate lending. Ms. Backstrom has earned her Certified California Municipal Treasurer (CCMT) and Certified Public Fund Investment Manager (CPFIM) designations.

Michelle Aguirre

Michelle Aguirre currently serves as the County of Orange’s Interim County Executive Officer, a role she has held since September 2024. In this role, she is responsible for executive management of the County’s $9.5 billion, 23 department, 19,000 position budget. Prior to serving as Interim CEO, Michelle served as Acting CEO, Chief Financial Officer, County Budget Director, and Director of Administration for the Orange County Probation Department as part of her 35 years of dedicated service to the County of Orange.

 Throughout her career, Michelle has been instrumental in identifying funding and ensuring completion of numerous critical projects throughout the County. One of the initiatives she is most passionate about is OC Cares which links the various systems of care in the County to provide full care coordination and services for justice-involved individuals to successfully reenter society and work towards self-sufficiency. 

Michelle earned a bachelor’s degree in industrial/organizational psychology and a master’s degree in public administration from California State University, Fullerton.