Handles property appraisal, assessed value, parcel characteristics, ownership-related assessment records, exemptions and many value questions.

Calculates property taxes using assessed values, applicable tax rates and other tax-roll information.

Issues bills, accepts payments, tracks balances, handles secured/unsecured tax collection, refunds and many delinquency questions.

Provides the formal county process for qualifying disputes over assessed value when the issue is not resolved with the Assessor.

If the bill includes a parcel tax or direct assessment that looks wrong, the agency listed for that charge may be the right contact.

Administers the Property Tax Postponement program for qualifying homeowners who meet the state requirements.

Match the Assessor’s Parcel Number with the property you intend to pay.

Make sure you are reading the correct fiscal year and not a prior-year or supplemental statement.

Shows the geographic tax-rate area associated with the parcel’s combination of taxing agencies.

Comes from the Assessor and is a key input in the ad valorem tax calculation.

Check whether an expected Homeowners’ or other qualifying exemption appears.

Parcel taxes and direct assessments may appear separately and are not necessarily based only on Assessor value.

First and second installments have different due and delinquency dates.

Check whether escrow, a prior transaction or a partial payment has already reduced the balance.

This is the date to watch when avoiding the normal secured-tax penalty.

Currently listed by the county with no convenience fee. Verify routing/account details carefully before submitting.

Current county guidance lists a 2.22% convenience fee with a $1.49 minimum per transaction.

Include the payment coupon when available and follow the official USPS-postmark instructions.

Useful when you need direct bill-specific help or want a counter receipt.

Santa Clara County currently allows partial payments on current secured property tax under specific rules.

DTAC says mailed payments with coupons typically take about 2–5 business days to process after receipt.

Lien date. The Assessor determines the property’s taxable value for the assessment cycle.

Annual secured bills are generally mailed during October and no later than the statutory billing period.

First secured installment is due.

Last normal day to pay the first installment without the secured-tax delinquency penalty.

Second secured installment is due.

Last normal day to pay the second installment without the secured-tax delinquency penalty.

Important year-end date before unpaid current secured taxes move into additional default/redemption treatment.

If December 10 or April 10 falls on a weekend or County holiday, the delinquency deadline moves to the next business day.

Follow the county’s online payment cutoff and Pacific Time instructions when paying on the last day.

A purchase or other reassessable transfer can establish a new base-year value.

Completed new construction can produce a supplemental assessment for the added value.

The supplemental assessment is generally prorated for the applicable portion of the fiscal year.

Receiving a supplemental bill does not replace the normal annual secured property tax bill.

Do not assume your mortgage company receives or automatically pays every supplemental bill.

Purchase timing and reassessment periods can sometimes result in more than one supplemental bill.

A reassessable ownership change can create a new base-year value and supplemental assessment.

Completed new construction may increase assessed value and produce supplemental tax.

Check whether the Homeowners’ or other expected exemption appears on the assessment and bill.

Tax-rate-area charges can move independently of your base assessment.

A school parcel tax, sewer charge or other agency assessment can change the total.

Penalty, cost or returned-payment charges can increase what is owed.

For qualifying owner-occupants using the property as their principal residence.

Available under California rules to qualifying disabled veterans or certain surviving spouses.

Proposition 8 may allow a temporary reduction when market value falls below the factored base-year value.

Property damaged by qualifying misfortune or calamity may have a separate reassessment route.

Certain qualifying transfers can be excluded from reassessment when the statutory requirements and filing rules are met.

California’s state program can defer current-year taxes for qualifying seniors, blind homeowners or homeowners with disabilities.

An error by the Tax Collector, Auditor or Assessor may support cancellation under applicable law.

Documented circumstances such as specific unexpected hospitalization, certain natural disasters or qualifying emergencies may be considered.

DTAC states that non-receipt of a property tax bill is not itself grounds for penalty cancellation.

Without an accepted USPS postmark, an early bank-bill-pay initiation does not necessarily establish timely payment.

DTAC states that financial circumstances alone are not a statutory basis for cancellation.

DTAC requires the balance and penalty to be paid before it reviews the cancellation request; approved penalties are refunded.