Auditor - Controller - Treasurer
Tax Collector

Donna Dunk
Donna M. Dunk, CPA

Auditor-Controller Treasurer-Tax Collector Donna M. Dunk, CPA, possesses a Bachelor's Degree from Sonoma State University. She has been an actively licensed Certified Public Accountant in California since 1990.

Our mission is to provide reliable and relevant financial information and quality financial services in an efficient, ethical, and effective manner to the citizens of Sonoma County while promoting fiscal responsibility and accountability.

    Find Your Property Tax Information Online

    Pay Taxes thumbnailThe Sonoma County Auditor-Controller-Treasurer-Tax Collector is pleased to provide you with the capability to obtain property tax information on-line. You may view your tax bill and, if desired, make your property tax payment using a credit card, debit card or E-Check electronic debit from your checking or savings account.

    credit cards

    Search for Property Tax Record Information and Pay Taxes
    • When: May 10, 2017 from 3:00 5:00 PM

      This cannabis workshop is geared toward cultivators (indoor, outdoor, and mixed-light) and nurseries and will include an overview of cultivation and nursery permit requirements, site planning (setbacks, maps, building, etc.), biotic assessments, riparian corridor requirements, tree removal, and inspections.

    • When: May 17, 2017 from 3:00 5:00 PM

      This cannabis workshop is for cultivators and focuses on complying with operating standards and best management practices (BMP), waste management, pesticide use, nutrient management, and erosion and sediment control.

    • When: May 24, 2017 from 3:00 5:00 PM

      This cannabis workshop is primarily for cultivators and will discuss waste discharge requirements, runoff and storm water control, water supply and management, groundwater monitoring and well metering, and North Coast Regional Water Quality Control Board’s waste discharge permit.

    • More Events
    • Published on July 6, 2015
      Phase 2 of the EFS project is now live!  Learn about what has been accomplished, what training is available and what's next now that we are live.
    • Published on April 22, 2015
      Phase 2 of the EFS project is nearing completion with an expected go-live date of July 1, 2015. Learn about what has been accomplished, what training will be available, and other important information for you as we gear up for go-live.
    • More News

    Contact Information

    Auditor–Controller Treasurer–Tax Collector
    County of Sonoma
    Business Hours
    Monday – Friday
    8:00 AM – 5:00 PM
    585 Fiscal Drive
    Suite 100
    Santa Rosa, CA 95403
    38.465764, -122.725126

    Contact Us Directly

    Email: Donna M. Dunk, CPA
    Auditor - Controller
    Treasurer-Tax Collector
    Phone: (707) 565-3285

    Email: Jonathan Kadlec
    Assistant Auditor - Controller
    Treasurer-Tax Collector
    Phone: (707) 565-6124

    Email: Erick Roeser
    Assistant Auditor - Controller
    Treasurer-Tax Collector
    Phone: (707) 565-3274

    Email: Julianne Kamplain
    Administrative Services Officer
    Phone: (707) 565-3583

    Financial Reports

    Annual Financial Report

    This report offers readers an overview and analysis of the County’s financial activities for the fiscal year ended June 30, 2016.

    Comprehensive Annual Financial Report 2015-16

    Citizens' Report

    This report provides an overview of the County’s financial condition and a brief analysis of where the County revenues come from and where those dollars are spent.

    Citizens' Report Fiscal Year 2015-16

    SB 272

    Senate Bill 272 requires local agencies publish a list of systems that serve as original sources of data within an agency.

    Read more


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