Frequently Asked Questions

Below you will find information that might help you understand how to find things or learn about information you might need to know about your city or town.

Treasurer - Tax Collector: Supplemental Tax Bills

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  • A supplemental tax bill is a separate bill that reflects the increase or decrease in the assessed value of real property. Supplemental tax bills are generated and mailed throughout the year, and payment due dates vary. For more information please call 530-265-1285.

    Treasurer - Tax Collector: Supplemental Tax Bills

  • A supplemental assessment is an increase or decrease in assessed value that is generated by a “supplemental event” such as a change in ownership or completion of new construction.

    The Assessor’s office is responsible for reassessing real property. Questions regarding property valuation may be directed to that office at 530-265-1232.
    Treasurer - Tax Collector: Supplemental Tax Bills

  • A negative supplemental tax bill is a separate bill that reflects assessment that is lower than the prior assessed value, a senior citizen’s transfer of Proposition 13 values, or other downward assessment and includes a refund check. A negative supplemental bill does not change your responsibility to pay all other property tax bills. However, the refund generated by a negative supplemental bill may be applied to any open bills for the same parcel. For more information please call 530-265-1285.

    Treasurer - Tax Collector: Supplemental Tax Bills

  • Yes. Supplemental tax bills are separate from and in addition to the annual secured property tax bill. They must be paid on time in order to avoid penalties. For more information please call 530-265-1285.

    Treasurer - Tax Collector: Supplemental Tax Bills

  • No. Supplemental tax bills are only mailed to the property owner of record. You should contact your lender to determine whether it will pay the supplemental tax bill. For more information please call 530-265-1285.

    Treasurer - Tax Collector: Supplemental Tax Bills

  • Yes. Appeals of supplemental assessments must be filed with the Assessment Appeals Board within sixty (60) days of the mailing date shown on the bill. To contact the Assessment Appeals Board, please call 530-265-1480.

    Important: Filing an appeal does not suspend the obligation to pay property taxes due on the property.

    If you choose to appeal your assessment, you must still pay your tax installments on any existing bills in full by the appropriate deadlines. Otherwise, you may incur penalties while the case is in the appeals process.
    Treasurer - Tax Collector: Supplemental Tax Bills