San Joaquin County Tax Collector: Property Tax Search, Payment, Offices & Phone
Need to find a San Joaquin County property tax bill, pay an installment, check a delinquent balance, locate the Stockton Tax Collector office or understand a tax-defaulted property? This guide brings the county’s main tax routes together and explains which office to contact for each type of problem.
Quick Answer: San Joaquin County Tax Collector
The official office is the San Joaquin County Treasurer-Tax Collector. Its Tax Collection Division collects secured and unsecured property taxes, processes redemptions and conducts actions related to unpaid property taxes. The public office is at 44 North San Joaquin Street, First Floor, Suite 150, Stockton, CA 95202. The main phone number is 209-468-2133 and the property-tax email is tax@sjgov.org. Regular office hours are Monday through Friday, 8:30 a.m. to 4:30 p.m., excluding holidays; the office stays open until 5:00 p.m. on delinquent dates.
On This Page
- Correct county office
- Property tax search
- Search by address
- How to read the tax bill
- Online and phone payment
- Payment fees
- Mail and in-person payment
- Secured-tax deadlines
- Unsecured taxes
- Supplemental taxes
- Tax default and redemption
- Redemption installment plan
- Tax-defaulted property auction
- New owners and escrow
- eBilling
- Penalty refund/correction
- Troubleshooting
- Phone, address and hours
- FAQs
Independent guide — use San Joaquin County for the transaction
TaxCollectors.org is an independent informational website. We do not collect San Joaquin County taxes, access private taxpayer accounts or determine official redemption balances. For an actual payment, tax record or legal deadline, use the official San Joaquin County resource provided for that task.
San Joaquin County Tax Collector, Assessor or Auditor?
San Joaquin County property taxes involve several county offices. Knowing which office controls your issue can save a trip across the building and prevent a payment question from being confused with an assessment question.
Choose the office that controls the problem
The San Joaquin County Treasurer-Tax Collector explains that the Assessor establishes property values, the Auditor-Controller applies tax rates and direct charges, and the Tax Collector mails bills, collects payments and takes action on unpaid taxes.
Do not use the Tax Collector to change an assessed value
If you believe the assessed value, exemption or ownership information is wrong, use the Assessor’s process. The Tax Collector can collect the amount billed, but it does not determine the underlying property valuation.
How to Search San Joaquin County Property Tax Records
The county’s property-tax payment system is designed around the tax account rather than a normal real-estate owner-name search. The most useful identifiers are the assessment number and fee-parcel number shown on the tax bill.
Assessment number
The tax bill identifies an assessment number. Keep the full number available if you intend to use the county’s automated phone payment system.
Fee parcel
The fee-parcel number is another important identifier for matching a property to the appropriate tax account.
Tax bill details
Before paying, compare the tax year, bill type, location, installment and messages printed on the bill.
Important search warning
A fee-parcel search can surface an unsecured tax bill associated with an assessee who is not the real-property owner. Do not automatically pay an unfamiliar bill simply because a parcel number appears in the result. If the result is unclear, contact the Tax Collector before submitting payment.
What If You Know the Property Address but Not the Tax Number?
If all you have is the street address, the Assessor’s property-information system is the better starting point. The Assessor supports property searches using information such as an address, assessment number or fee-parcel number.
- Open the official Assessor property inquiry. Use San Joaquin County’s Assessor resources rather than an unrelated commercial parcel database.
- Search the property address. Enter the street information and review the matching parcel.
- Record the assessment and fee-parcel numbers. Keep both identifiers because they can be useful when moving between Assessor and Tax Collector services.
- Return to the Tax Collector. Use the identifier to locate the tax account and payment information.
Keep assessment and collection separate
The Assessor’s result helps identify the property and its assessed information. The Tax Collector’s account controls the tax payment record. A property-value search is not itself a payment confirmation.
How to Read a San Joaquin County Property Tax Bill
A tax bill contains several fields that matter when you are checking whether you have the right account. Do not choose a payment simply because the property address looks familiar.
| Bill field | What it tells you | What to check |
|---|---|---|
| Fee parcel | Property/parcel identifier | Match it to your property records and write it on a mailed payment when required. |
| Assessment | Tax-account identifier | Keep the number available for phone payment and questions. |
| Owner | Name associated with the issued bill | Recent ownership changes can require checking closing or escrow documents. |
| Location | Property location printed on the bill | Confirm the location before submitting payment. |
| Bill type | Secured, unsecured, supplemental or another account type | Different tax types can have different payment rules. |
| Tax year | Fiscal year covered by the bill | Paying a current bill does not automatically clear older defaulted taxes. |
| Installment | First or second annual installment | The first installment must be paid before or with the second. |
| Messages | Account-specific instructions or notices | Read this section before paying because it can change the next action. |
| Direct assessments | Charges from cities, districts or other agencies | Questions about the charge may need to go to the agency named on the bill. |
How to Pay San Joaquin County Property Tax
San Joaquin County provides online, phone, mail and in-person payment options. The county recommends online payment for convenience, while taxpayers using mail need to pay particular attention to the USPS postmark rules.
- Identify the correct tax account. Have the assessment or fee-parcel information ready and verify the property location, tax year and bill type.
- Choose online, phone, mail or in-person payment. Select the method that fits your timing and account type.
- Check the installment. For annual secured taxes, the first installment must be paid before or with the second installment.
- Review the amount and payment fee. Card payments can have a processor convenience fee; eCheck is currently listed as free.
- Keep your confirmation. Save the transaction number and bank/card record. For eCheck, a confirmation number does not by itself prove that the ACH payment successfully cleared.
- Verify the account afterward when appropriate. Keep payment proof until the county account reflects the expected payment status.
Official phone payment
San Joaquin County lists 877-777-3839 for property-tax payments by phone. Have the 12-digit assessment number available. The county states that prior-year payments and payment-plan setup are not available through the phone payment route.
San Joaquin County Property Tax Payment Fees
The convenience fees for electronic property-tax payments are charged by the payment service provider rather than being a tax imposed by San Joaquin County. The county’s published property-tax information currently lists the following rates.
eCheck
No convenience fee is listed for eCheck payments.
Debit card
$3.49 per transaction is the published convenience fee.
Credit card
2.29% of the amount paid is the published convenience fee.
eCheck is not risk-free
A transaction confirmation does not guarantee that an electronic check will successfully clear. Incorrect bank information, insufficient funds or an ACH debit block can cause a payment to fail. If a payment is returned after a delinquency deadline, statutory penalties may still apply.
ACH Debit-Block Issue
San Joaquin County’s current payment information identifies three company IDs that may need to be authorized by a financial institution when an account has an ACH debit block: 4596379846, 1043575881 and 1621365614. If your bank blocks the county’s electronic debit, contact the bank before making another time-sensitive payment and confirm the current instructions with the Tax Collector.
The county also lists a $500,000 maximum for an individual eCheck payment. If your payment is larger or involves multiple accounts, contact the Tax Collector before assuming the online transaction can be split or processed in a particular way.
Pay San Joaquin County Property Tax by Mail or in Person
Pay by mail
Make the remittance payable to SJC TTC and mail it to:
SJC TTC
P.O. Box 2169
Stockton, CA 95201-2169
Include the payment stub and write the assessment or fee-parcel number on the payment as directed by the county. Checks and money orders are accepted. Do not mail cash.
Pay in person
Visit the Treasurer-Tax Collector at:
44 North San Joaquin Street
First Floor, Suite 150
Stockton, CA 95202
The county identifies the public entrance on the Weber Avenue side of the building, near San Joaquin Street and Weber Avenue.
USPS Postmark Rules Matter
For mailed property-tax payments, San Joaquin County states that the payment must be received by the office or carry a qualifying United States Postal Service postmark by the delinquency date. Do not assume that a private carrier label, commercial postage-meter date or online postage date is the same as a USPS postmark.
Mail early when a deadline is close
A payment mailed on the last possible day creates unnecessary risk if the required postmark is missing or the payment arrives after the deadline. When timing is critical, use an official electronic payment route or visit the county office after confirming the applicable deadline and hours.
San Joaquin County Secured Property Tax Due Dates
San Joaquin County secured property taxes are paid in two installments. The county’s current calendar lists November 1 as the first installment due date and February 1 as the second installment due date.
| Installment | Due date | Normal delinquency date | Penalty after delinquency |
|---|---|---|---|
| First secured installment | November 1 | December 10 at 5:00 p.m. | 10% delinquent penalty |
| Second secured installment | February 1 | April 10 at 5:00 p.m. | 10% penalty + $10 cost |
If December 10 or April 10 falls on a Saturday, Sunday or legal holiday, San Joaquin County states that the delinquency date moves to 5:00 p.m. on the next business day.
Current 2025–26 cycle
For the 2025–26 secured tax year, the county’s official tax bill identifies November 1, 2025 as the first-installment due date and February 1, 2026 as the second-installment due date. The normal delinquency dates were December 10, 2025 and April 10, 2026. Unpaid secured amounts remaining at the end of the fiscal year can become tax-defaulted.
What If You Miss a Deadline?
Missing the first secured installment deadline adds a 10% penalty. Missing the second adds a 10% penalty plus a $10 administrative cost. If current secured taxes remain unpaid by 5:00 p.m. on June 30, the county states that the taxes become defaulted and additional fees, costs and monthly interest can accrue.
San Joaquin County Unsecured Property Tax
Unsecured property taxes are different from secured real-property taxes. San Joaquin County’s unsecured-tax program covers taxable personal property and other property that is not secured by real property.
Examples
County information identifies taxable personal property such as business property, boats, jet skis and aircraft as examples of unsecured property.
Annual billing
Unsecured annual bills are handled on a separate timetable from the two-installment secured property-tax calendar.
2026 deadline
San Joaquin County currently lists August 31, 2026 as the unsecured-tax delinquent date, with the next-business-day rule when applicable.
If you have an unsecured bill, use the county’s current unsecured-tax instructions instead of automatically applying the November/December and February/April secured-tax dates.
Official Unsecured Tax InformationSupplemental Property Taxes in San Joaquin County
A supplemental property-tax bill can arise after a change in ownership or completion of new construction. It is separate from the regular annual secured tax bill and should not be ignored simply because the annual bill has already been paid.
San Joaquin County’s secured-tax FAQ explains that supplemental tax installments can become delinquent and are subject to the applicable penalties, costs, fees, interest and default rules. If you receive a supplemental bill, follow the dates printed on that bill and the county’s current supplemental-tax instructions.
New owner reminder
A title or escrow transaction does not transfer the Tax Collector’s legal responsibility for timely payment to the escrow company. Review your closing documents and confirm with the responsible parties which tax installments were actually paid to the county.
San Joaquin County Tax Default and Redemption
A delinquent installment and a tax-defaulted property are not the same stage. San Joaquin County states that if current secured taxes remain unpaid by 5:00 p.m. on June 30, the unpaid taxes become tax-defaulted. Additional fees, costs and monthly interest can then accrue.
First delinquency
An unpaid first installment receives a 10% delinquent penalty after the December 10 deadline.
Second delinquency
An unpaid second installment receives a 10% penalty plus a $10 cost after the April 10 deadline.
Tax default
Continued nonpayment through June 30 can move the account into tax-default status, with additional redemption costs and monthly interest.
Five-Year Power-of-Sale Rule
San Joaquin County states that if taxes remain defaulted for five years after the date of default, the property becomes subject to the Treasurer-Tax Collector’s power of sale and can subsequently be sold at public auction, subject to the statutory process.
Get the official redemption amount
Do not calculate a tax-default payoff from the original bill alone. The redemption amount can include delinquent taxes, penalties, monthly interest, statutory fees and other applicable costs. Contact the county for the amount required to redeem the specific property on the date you intend to pay.
San Joaquin County Redemption Installment Plan
San Joaquin County provides an installment plan for eligible tax-defaulted property. The plan is not the same as ordinary monthly property-tax payment. The county’s current redemption information requires specific payments and continued compliance with current-tax obligations.
| Requirement | County rule | Why it matters |
|---|---|---|
| Initial payment | At least 20% of the redemption amount | The installment plan does not begin without the required initial payment. |
| Current taxes | Paid separately | Plan payments do not replace new annual tax bills. |
| Annual plan payment | At least 20% plus accrued interest by the applicable deadline | Missing required payments can cause the plan to default. |
| Supplemental taxes | Must remain current where applicable | An unpaid supplemental installment can affect the plan. |
| Completion | Follow the county’s five-year redemption-plan requirements | Power-of-sale timing can limit available options. |
The county states that redemption payment plans cannot be started online or by phone. Contact the redemption section for account-specific instructions and eligibility.
San Joaquin County Tax-Defaulted Property Auction
San Joaquin County can sell tax-defaulted property through a public auction after the statutory power-of-sale process applies. Auction information is time-sensitive, so an old auction date should never be treated as the current schedule.
For property owners
If your property appears on an upcoming sale list, contact the Tax Collector’s redemption section immediately. Do not assume that a normal online payment after the pre-sale cutoff automatically removes the property from the auction process.
For bidders
Read the current county auction notice and bidder instructions before registering or sending a deposit. Tax-sale property is sold under a statutory process and requires independent due diligence.
Research Before Bidding
A prospective bidder should investigate the property independently, including title, access, zoning, code issues, environmental concerns, liens or interests that may affect the property, mobile-home issues and special assessments. Do not treat a county auction listing as a substitute for property due diligence.
Check Current County Auction InformationNew Homeowners, Mortgage Escrow and San Joaquin County Taxes
Buying a property does not automatically mean that all property taxes have been paid at closing. San Joaquin County’s FAQ warns new owners to check their closing documents and confirm which installments were actually submitted to the Tax Collector.
If your lender pays taxes
The property owner remains responsible for making sure the taxes are paid on time. Ask the lender or its tax-service provider when the payment was submitted and verify the county payment status.
If you bought after November 1
San Joaquin County notes that title companies commonly handle tax proration during escrow, but the actual tax payment may still need to be confirmed with the Tax Collector.
A lender’s expected payment is not the same as a county posting
If your mortgage company says it will pay the bill, keep checking the county account around the applicable deadline. If a payment is late, ask the lender for the payment date, amount, assessment number and transaction trace.
San Joaquin County Property Tax eBilling
San Joaquin County offers My County Connect eBilling for annual secured and unsecured property-tax bills. The service allows enrolled taxpayers to receive bills by email and view payment status and downloadable PDF copies.
What you can receive
Annual secured and unsecured property-tax bills are currently supported.
What you need
Enrollment requires the eBill PIN printed on the current-year tax bill.
Paper bills continue
The county states that paper bills continue while its broader paperless-billing capability is developed.
Email reminders do not replace the legal deadline
Failure to receive an eBilling email or reminder does not remove the obligation to pay property taxes or excuse a legally applicable penalty.
Can San Joaquin County Refund or Correct a Property Tax Penalty?
The county provides a formal Claim for Refund / Correction of Taxes process. A claim is not an automatic penalty waiver request; the facts must fit an applicable legal correction or refund basis.
Situations the county says do not qualify for a penalty waiver by themselves
- You did not receive the tax bill.
- You expected your mortgage company to pay.
- Your bank sent the payment late.
- You paid on time in previous years.
- A late payment arrived without a qualifying USPS postmark.
- You could not afford the tax payment.
- You were a new homeowner who did not know the tax was due.
If you believe there was a legal error in the assessment, payment application or penalty, review the county’s current claim form and instructions before submitting anything. The county also warns that its forms can change, so use the latest version rather than keeping an old saved form.
Review Refund / Correction RulesSan Joaquin County Property Tax Problems: What to Do Next
| Problem | Best next action |
|---|---|
| No owner name appears in the online search | Use the tax bill, Assessor inquiry or call the Tax Collector for account identification. |
| Search shows an unfamiliar unsecured bill | Do not pay automatically. Ask the Tax Collector to identify the responsible assessee. |
| eCheck confirmation exists but money was not withdrawn | Check bank details, available funds and ACH debit-block settings; confirm the account with the county. |
| Second installment cannot be paid separately | Check whether the first installment is still unpaid. The first must be paid before or with the second. |
| Mailed payment arrived late | Check whether the envelope has a qualifying USPS postmark. A private postage date is not necessarily controlling. |
| Mortgage company says it paid, but county shows unpaid | Ask the lender for payment date, amount, assessment number and trace information, then contact the Tax Collector. |
| Prior-year taxes remain unpaid | Contact the redemption section for a current payoff covering all applicable defaulted taxes. |
| Tax amount appears wrong | Determine whether the issue concerns value, tax rate or a direct assessment, then contact the appropriate county office. |
| Property appears on an auction list | Contact the Tax Collector’s redemption section immediately and confirm the current sale and redemption status. |
Useful phone script
When calling, have your assessment number or fee parcel, property location, bill type and tax year ready. Then state the exact issue: responsible assessee, current balance, payment posting, redemption deadline or auction status. This gives the county staff the information needed to route the question more quickly.
San Joaquin County Tax Collector Phone, Address and Hours
Treasurer-Tax Collector’s Office
Physical address
44 North San Joaquin Street
First Floor, Suite 150
Stockton, CA 95202
Monday–Friday
8:30 a.m.–4:30 p.m.
Excluding holidays
Mailing Address
SJC TTC
P.O. Box 2169
Stockton, CA 95201-2169
209-468-2158
Payment-system technical help866-628-9244
Delinquent-date hours
The county states that the Treasurer-Tax Collector’s office remains open until 5:00 p.m. on delinquent dates.
Building routing
The Tax Collector is on the first floor in Suite 150. The Assessor is on the second floor in Suite 230, while formal assessment appeals are handled through the Clerk of the Board process.
Official San Joaquin County Tax Resources
Use the resource that matches the task you are trying to complete. County pages can change as payment systems, forms and deadlines are updated.
Open official department
Open official payment page
Open secured-tax information
Open tax calendar
Open unsecured-tax information
Open redemption information
Open eBilling information
Review refund guidance
Open Assessor resources
San Joaquin County Tax Collector FAQs
What is the San Joaquin County Tax Collector phone number?
The Treasurer-Tax Collector lists 209-468-2133 for property-tax questions. The county’s automated phone payment number is 877-777-3839.
Where is the San Joaquin County Tax Collector office?
The office is at 44 North San Joaquin Street, First Floor, Suite 150, Stockton, CA 95202.
What are the San Joaquin County Tax Collector office hours?
Regular hours are Monday through Friday, 8:30 a.m. to 4:30 p.m., excluding holidays. The county states that the office remains open until 5:00 p.m. on delinquent dates.
How do I search for a San Joaquin County property tax bill?
Start with the county’s official property-tax payment page. The assessment number and fee-parcel number shown on the tax bill are useful identifiers. If you only know the property address, start with the county Assessor’s property inquiry.
Can I pay San Joaquin County property taxes online?
Yes. San Joaquin County provides an official online property-tax payment and bill-access route. The county currently supports electronic payment options including eCheck, debit card and credit card through its payment system.
How much is the San Joaquin County property tax online payment fee?
The county’s current published information lists eCheck as having no convenience fee, debit card at $3.49 per transaction and credit card at 2.29% of the amount paid.
When are San Joaquin County secured property taxes due?
The first annual secured-tax installment is due November 1. The second is due February 1 of the following year. The normal delinquency dates are December 10 and April 10 respectively, subject to the county’s next-business-day rule when the date falls on a weekend or legal holiday.
What happens if I miss a San Joaquin County property tax deadline?
An unpaid first installment receives a 10% delinquent penalty after the December 10 deadline. An unpaid second installment receives a 10% penalty plus a $10 cost after the April 10 deadline. Continued nonpayment can eventually result in tax default and additional redemption costs.
Can I pay the second secured-tax installment separately?
The county states that the second installment may be paid separately only after the first installment has been paid. The first and second installments can also be paid together.
What happens if San Joaquin County property taxes become tax defaulted?
If current secured taxes remain unpaid by the end-of-fiscal-year deadline, the property can become tax-defaulted. The county states that additional fees, costs and monthly interest at 1.5% can accrue. After five years of default, the property can become subject to the Tax Collector’s power of sale.
Can I set up a payment plan for tax-defaulted San Joaquin County property?
San Joaquin County provides an installment plan of redemption for eligible tax-defaulted property. The county’s current requirements include an initial payment of at least 20% of the redemption amount, continued payment of current taxes and additional plan requirements. Contact the redemption section for the specific account.
Can I pay San Joaquin County property taxes by mail?
Yes. Checks and money orders can be mailed to SJC TTC, P.O. Box 2169, Stockton, CA 95201-2169. Include the payment stub and the applicable assessment or fee-parcel information. Do not mail cash.
Does a USPS postmark matter for a mailed tax payment?
Yes. San Joaquin County states that property-tax payments must be received by the office or have a qualifying USPS postmark by the applicable delinquency date. Commercial postage-meter dates and other mailing dates should not automatically be treated as a USPS postmark.
Does the Tax Collector handle property-value disputes?
No. Assessed-value, exemption and related assessment questions belong with the San Joaquin County Assessor. Formal assessment appeals use the Clerk of the Board/Assessment Appeals Board process.
Does my mortgage company paying property taxes remove my responsibility?
No. San Joaquin County says the property owner remains responsible for making sure taxes are paid on time. Check with your lender and verify the county payment status rather than assuming an expected escrow payment has already posted.
What is San Joaquin County eBilling?
My County Connect is the county’s eBilling service for annual secured and unsecured property-tax bills. Enrollment requires the eBill PIN from the current-year bill. The service also allows enrolled taxpayers to view payment status and download a PDF copy of the bill.
Is TaxCollectors.org the official San Joaquin County Tax Collector?
No. TaxCollectors.org is an independent informational website. Official tax payments, account records, redemption amounts and auction information should be handled through San Joaquin County’s official resources.
Bottom Line: Start With the Correct San Joaquin County Tax Route
For a normal property-tax payment, start with San Joaquin County’s official Tax Collector payment system and match the assessment, fee parcel, location, tax year and installment before submitting the transaction. If you only know the address, use the Assessor to identify the property first.
If the account is delinquent or tax-defaulted, do not rely on the original bill to calculate the amount needed today. Contact the Tax Collector for the current balance or redemption amount. For assessed value, exemption or ownership-record questions, use the Assessor; for formal assessment appeals, follow the Clerk of the Board process.
The Tax Collector’s Stockton office is at 44 North San Joaquin Street, First Floor, Suite 150. The main property-tax phone number is 209-468-2133, and regular hours are 8:30 a.m.–4:30 p.m. weekdays, excluding holidays. Always verify the live county page before acting because tax deadlines, forms, payment systems, fees and auction information can change.
The TaxCollectors.org Editorial Team researches and reviews U.S. tax collector offices, property tax procedures, payment resources, deadlines, and official government links. TaxCollectors.org is an independent information publication operated by Quarks Systems Global Solutions.