Obtaining Your Tax Bill Annual secured tax bills, which can be paid in two installments, are mailed once a year by November 1. This is the only bill regularly mailed each year by the Tax Collector and contains payment stubs for both installments. If you do not receive your annual tax bill by November 10, you should request one by calling the Napa County Tax Collector's Office at (707) 253-4312 during regular business hours, Monday through Friday 8:00 a.m. to 5:00 p.m. or; in person, at the Tax Collector's Office located at the Napa County Administration Building, 1195 Third Street, Suite 108, Napa, California. This option is not recommended during tax periods due to parking problems and lengthy delays. If your taxes are paid through an impound account (i.e., included with your mortgage payment), your lender should request your annual tax bill, and you will receive an informational copy. Supplemental Property Tax bills (additional taxes added after reassessment upon sale of the property or new construction), are not sent to your lender, but are mailed directly to you. It is your responsibility to contact your lender to determine who will pay the supplemental tax bill. IMPORTANT NOTE: per state law, failure to receive a tax bill shall not relieve the lien of taxes, nor shall it prevent the imposition of penalties imposed by this code (R&T 2610.5).
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