Sandie Arnott is the first woman and first Latina elected to the position of Treasurer‑Tax Collector of San Mateo County.  She was first elected in November, 2010 and re-elected in June, 2014, 2018 and 2022.

Since her election, Ms. Arnott's priorities have been focused on improving payment processes, making them more convenient, efficient and green.  She was awarded the County STARS Award for Customer Service for implementing a Chat Line on the department website and for installing a mobile mailbox to better assist the elderly and disabled.  She is very active in legislation affecting taxpayers and authored AB2738 signed into law by the Governor on 9/22/16.  This new law dis-allows school districts and community college districts from claiming bond proceeds as surplus funds thereby protecting taxpayer dollars.  She also authored AB1025 signed into law in October, 2023 allowing external legal counsel when required by Treasurer-Tax Collectors.  Ms. Arnott was instrumental in seeking the Governor’s Executive Order N-61-20 in 2020 authorizing penalty waivers for those impacted by the pandemic. Among her many certifications, she earned the Government Finance Master Certificate through Wayne State University and the High Performance Leadership Master Certificate through the NACo Professional Development Academy. Additionally, Pension Fund Investment certifications through The Wharton School, USC & UCLA.

Ms. Arnott currently serves as a member of the San Mateo County Treasury Oversight Committee; She is the Ex-Officio Trustee and Secretary of the San Mateo County Employees Retirement Association (SamCERA); Past President of the California Association of County Treasurers & Tax Collectors (CACTTC – 2017-18).  She was selected by State Treasurer Fiona Ma & the California State Association of Counties (CSAC) to serve on the California Debt Investment Advisory Commission (CDIAC) and under State Controller Malia Cohen serves on the State Committee on County Tax Collecting Procedures.     Ms. Arnott also serves as President of the National Association of County Collectors, Treasurers and Finance Officers (NACCTFO – 2024-25) and is also the California Liaison.  She was named Treasurer-Tax Collector of the Year 2019-20 by the California Association of County Treasurers & Tax Collectors and served as President of Women in County Government in 1997‑98. 

Being aware of what situations are occurring nationwide that perhaps haven’t filtered down to California yet allows me to bring back information to my association as a heads-up for consideration and preparation of potential impacts.  It’s so important to be as involved and educated on what’s going on in order to be best prepared to handle situations that impact our world of finance and our constituents. I believe NACCTFO does an excellent job of promoting the general interests of all our state counties, striving for professional standards, sharing innovative ideas and stimulating a friendly and cooperative spirit among our membership.