Rate Breakdown

Property taxes in Santa Clara County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Santa Clara County

In Santa Clara County, property taxes are calculated on the assessed value of real‑estate as determined by the County Assessor’s Office. The assessment process follows California’s Proposition 13 framework: the property's assessed value is set at the purchase price (or the most recent reassessment) and can increase a maximum of 2 % per year, regardless of market fluctuations. When a change of ownership, new construction, or a significant remodel occurs, the property is reassessed at its current market value, and the new base value becomes the starting point for future 2 % annual adjustments.

The tax bill you receive reflects two primary components:

• Base levy (1 % of assessed value): This is the statewide property tax rate mandated by Proposition 13.
• Local voter‑approved levies (millage rates): School districts, city councils, and special districts add their own rates, expressed in mills (one mill equals $1 per $1,000 of assessed value). In Santa Clara County, combined millage rates typically range from 15 to 20 mills, depending on the exact location of the property.

The resulting tax amount is the sum of the base levy and all applicable local levies, applied to the current assessed value of the property.

Available Exemptions

California offers several exemptions that can lower your taxable base. While the exemptions themselves are statewide, eligibility and application are administered through the Santa Clara County Assessor’s Office.

• Homeowner’s (Homestead) Exemption: Reduces the assessed value of owner‑occupied residential property by up to $7,000, shaving roughly $70‑$100 off a $1 million assessment.
• Senior Citizen Exemption: Residents age 62 or older may qualify for an additional $7,000 exemption if they meet income criteria (generally $45,000 or less in adjusted gross income).
• Disabled Veteran Exemption: A qualifying disabled veteran can receive a $5,000 exemption for the first $100,000 of assessed value, plus an additional $5,000 for the next $100,000.
• General Disabled Person Exemption: If you have a severe visual or mobility impairment, you may claim a $5,000 exemption on the first $100,000 of assessed value.

Applications for these exemptions are typically due by March 1 of the tax year in which you seek relief. Forms are available online through the County Assessor’s website or can be obtained in person at the Assessor’s office.

Payment Schedule & Deadlines

Santa Clara County follows the state‑mandated payment schedule for property taxes:

• First installment: Due November 1; becomes delinquent after December 10.
• Second installment: Due February 1; becomes delinquent after April 10.

Taxpayers may pay the full amount at any time before the applicable delinquency date without penalty. If you prefer to spread the cost, you can also set up automatic electronic withdrawals through the Electronic Tax Payment System (ETPS), which allows weekly or monthly installments.

Late payments incur a 10 % penalty on the delinquent portion, plus interest calculated at the statutory rate (currently 7 % annually). Continued non‑payment can result in a tax lien, tax foreclosure, and the loss of the property.

Appealing Your Assessment

If you believe your assessed value is inaccurate, you have the right to challenge it. The appeal process in Santa Clara County follows these steps:

• File a Formal Protest: Submit a written protest to the Santa Clara County Assessment Appeals Board (AAB) by July 2 of the tax year. The protest can be filed online, by mail, or in person.
• Gather Evidence: Compile comparable sales, recent appraisals, or other documentation that supports a lower market value.
• Attend a Hearing: The AAB will schedule a hearing, usually within 30 days of receiving your protest. You may represent yourself or hire a qualified property tax consultant.
• Decision & Further Review: The board issues a written decision. If you disagree, you may appeal to the California State Board of Equalization within 30 days of the AAB’s decision.

Timely filing and a clear, evidence‑based argument are essential for a successful appeal. Most disputes are resolved at the county level, saving homeowners both time and expense.