San Luis Obispo County Tax Collector: Pay Property Taxes, Hours, Fees & Deadlines
If you searched for the County of San Luis Obispo Tax Collector, you probably need to pay a secured, unsecured, or supplemental property tax bill, check the official office address, compare free eCheck with card fees, or avoid a delinquent penalty.
This guide gives you the correct official payment portal, search steps, mailing checklist, phone number, due dates, supplemental bill warnings, unsecured tax rules, and the difference between Tax Collector and Assessor questions.
The San Luis Obispo County Tax Collector is part of the Auditor-Controller-Treasurer-Tax Collector-Public Administrator department. The public counter is at 1055 Monterey Street, Room D-290, San Luis Obispo, CA 93408. The official tax payment phone number is 805-781-5831. Taxpayers can search and pay secured, unsecured, and supplemental property tax bills online through the county tax portal, by phone, in person, or by mail.
When Is Your
Next Tax Deadline?
Select your state — see your exact deadline, live countdown, and whether you’re on time or already accruing penalties.
What Do You Need From the San Luis Obispo County Tax Collector?
Most users need one of four things: pay the correct bill, confirm a due date, fix a delinquent balance, or understand whether the Assessor must answer a value question.
Property Tax Penalty & Interest Calculator
State-specific penalty rates • Interest accrual • Tax lien deadline • Cost-of-waiting breakdown
| Original Tax Amount | $0.00 |
| Initial Penalty— | $0.00 |
| Monthly Interest— | $0.00 |
| Fixed Fees— | $0.00 |
| Total Due | $0.00 |
Daily Accrual Rate
Interest and penalties are adding this much to your balance every single day
Tax Lien Warning
| If You Pay On | Days Late | Penalty | Interest | Total Owed | Extra Cost |
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Pay secured property tax
Use this for real estate property tax bills. Search by assessment number, mailing address, or assessee name.
Go to payment stepsPay supplemental tax
Use this when a separate bill arrives after purchase, ownership change, or new construction.
Go to supplemental helpPay unsecured tax
Use this for business equipment, boats, aircraft, possessory interests, or other non-real-estate taxable property.
Go to unsecured tax helpHandle delinquent taxes
Do not guess from an old bill. Confirm the current redemption amount before paying prior-year secured taxes.
Go to delinquent tax helpAsk about value
Assessed value, exemptions, ownership records, and some appeal questions start with the Assessor, not the payment counter.
Go to Assessor vs Tax CollectorNeed another California county?
Use the correct county guide before entering payment details on any portal.
Fresno County tax collector guideBefore you start checklist
- Assessment number if you have the bill.
- Property address or mailing address.
- Assessee name exactly as it appears on the bill.
- Bill type: secured, unsecured, or supplemental.
- Installment number and tax year.
- Payment confirmation number if you already paid.
What the San Luis Obispo County Tax Collector Office Handles
The Tax Collector Division issues and collects secured and unsecured tax bills. It also handles several related county tax services, but it does not decide the assessed value of your property.
| Your issue | Start with | Why this matters |
|---|---|---|
| Pay secured real estate tax | Tax Collector | The Tax Collector collects annual secured property tax installments. |
| Pay business equipment, boat, or aircraft tax | Tax Collector | These often fall under unsecured property tax billing. |
| Value, ownership, exemption, or assessment question | Assessor | The Assessor determines taxable value and maintains assessment records. |
| Prior-year tax-default or payment plan | Tax Collector Redemption Division | Redemption amounts and payment-plan rules are separate from normal current-year payment. |
Related California guides on this site include the San Francisco tax collector guide, Alameda County tax collector guide, Kern County tax collector guide, and Los Angeles County tax collector guide.
How to Pay San Luis Obispo County Property Taxes Online, by Phone, by Mail or In Person
The official county payment guide says taxpayers can pay secured, unsecured, or supplemental property tax bills online, by phone, at the public counter, or by mail.
Open the official county tax portal
Start with the official Taxes on the Web portal or the county payment guide. Avoid search ads, old bookmarks, and private lookalike pages.
Open official tax portalSearch the correct record
Search by assessment number, mailing address, or assessee name. The assessment number is usually the cleanest option when you have the bill.
Confirm the bill type
Make sure the bill is secured, unsecured, or supplemental before paying. The due dates and payment risk are not always the same.
Pick the payment method
Use eCheck if you want the lowest-cost online method. Use card only after reviewing the processor fee. Use mail only when there is enough time.
Save proof immediately
Keep the receipt, confirmation number, canceled check, mailing proof, or transaction details until the county record shows paid.
Official online payment portal
Use this for secured and unsecured property tax information and payment options.
Search / Pay Tax BillOfficial payment instructions
Use this page for search methods, mail instructions, fees, hours, phone and public counter details.
Open Payment GuideFree vs Paid Payment Options: eCheck, Paper Check and Card Fees
The official payment guide says paper check and eCheck payments have no additional charge. Credit and debit card payments require a 2.35% processing fee with a minimum processing charge of $1.49.
| Payment method | Official fee note | Best for |
|---|---|---|
| eCheck | No additional charge listed | Most online payers who can safely use checking or savings account details. |
| Paper check by mail | No additional charge listed | Taxpayers mailing early enough to meet legal postmark rules. |
| Credit or debit card | 2.35% processor fee; $1.49 minimum | Users who accept the fee for card convenience or urgency. |
| In person | Verify method and fee before visiting | Complex accounts, near-deadline help, or staff-assisted questions. |
Simple fee decision
On a large property tax bill, a 2.35% card fee can be expensive. If time allows and your account details are correct, eCheck is usually the lowest-cost online option.
San Luis Obispo County Tax Collector Office Hours, Address and Phone Number
The public service counter is listed at the New Government Center, Room D-290. Call first if your issue involves delinquent taxes, prior-year payoff, a payment plan, or a missing payment.
Tax Collector Public Counter
Property tax payment and bill help
When to Call Before Visiting
Save a trip if the issue is complex
- Delinquent or prior-year secured tax payoff.
- Payment-plan or redemption questions.
- Supplemental bill confusion after purchase.
- Payment made but not posted.
- Mortgage company or impound account issue.
- Unsecured tax bill for business equipment, boats, or aircraft.
Mail Payment Instructions That Prevent Posting Problems
Mailing can work well if you send early and include the right information. It is risky near a delinquency date if you cannot prove timely mailing.
Make check payable correctly
Use County Tax Collector or SLOCTC, unless your current official bill gives different instructions.
Write assessment number on payment
The county payment guide tells taxpayers to write the assessment number being paid on the check or money order.
Include payment stub
Enclose the payment stub and avoid paper clips, staples, or tape.
Mail to the official address
County Tax Collector or SLOCTC, 1055 Monterey St., Room D-290, San Luis Obispo, CA 93408-1003.
Do not send cash
Use check or money order for mail payments. Keep a copy, mailing proof, and bank record until the county account shows paid.
Secured Property Tax Due Dates, Delinquency Dates and Penalties
San Luis Obispo County secured property taxes are billed on a fiscal-year basis and paid in two installments. The important dates are November 1, December 10, February 1, April 10, and June 30.
| Date | What it means | Practical action |
|---|---|---|
| November 1 | First secured tax installment due | Pay early or confirm lender/impound status. |
| December 10 | First installment becomes delinquent after this date | Avoid waiting until the last day. |
| February 1 | Second installment due | Second installment cannot be accepted before the first. |
| April 10 | Second installment becomes delinquent after this date | Confirm posting if paying close to deadline. |
| June 30 | Unpaid installment can become tax-defaulted | Contact the Tax Collector before tax-default risk grows. |
Penalty warning
A late first installment gets a 10% penalty. A late second installment gets a 10% penalty plus a cost. If an installment remains unpaid by June 30, the property becomes tax-defaulted and more penalties and fees can accrue.
Supplemental Property Tax Bills After Purchase or New Construction
A supplemental bill is separate from the regular annual secured tax bill. It can arrive after a property purchase, ownership change, or completed new construction.
Why you received it
The bill reflects the difference between the prior assessed value and the new assessed value after a taxable event.
Do not assume lender payment
The county says supplemental tax bills are mailed directly to the taxpayer. You must contact your lender to determine who will pay it.
Due dates can vary
Supplemental bills are mailed throughout the year, so their due and delinquent dates may not match the regular annual bill.
What new buyers should do
- Check whether your lender pays supplemental bills.
- Read the bill’s specific due and delinquent dates.
- Call the Tax Collector for payment questions.
- Call the Assessor if the new assessed value or proration looks wrong.
- Do not ignore a supplemental bill just because your regular bill is escrowed.
Unsecured Property Taxes for Business Equipment, Boats and Aircraft
Unsecured property tax applies to taxable property not secured by real estate. County examples include business equipment, leasehold improvements, boats, and airplanes.
Business equipment
Machinery, computers, fixtures, furniture, and similar business assets may be billed as unsecured property.
Boats and aircraft
Some boats and airplanes are listed by the county as unsecured property tax examples.
August 31 deadline
Unsecured bills are issued each year in July and become delinquent if not paid on or before August 31.
Why selling the asset may not erase the bill
The January 1 lien date can determine responsibility for the upcoming fiscal year. If you sold a boat, aircraft, or business asset after that date, call the county before assuming the bill is wrong.
Delinquent Property Taxes, Redemption Division and Payment Plans
For delinquent or prior-year secured taxes, use the current county payoff information. Old bills may not include all penalties, fees, interest, and redemption requirements.
Redemption Division
For the amount required to redeem property, contact the County Tax Collector’s Redemption Division at 805-781-5836.
Payment-plan timing
Payment plans may be available for prior-year secured real property taxes, but rules and timing matter.
Power to sell risk
The county says after five years from tax-default, property can become subject to the Tax Collector’s power to sell.
Before calling about delinquent taxes
- Have the assessment number ready.
- Have the property address ready.
- Know the assessee name.
- Know the month in which you plan to redeem.
- Ask whether current-year taxes must also be paid.
- Ask whether a monthly or annual payment plan is possible.
Assessor vs Tax Collector: Which San Luis Obispo County Office Do You Need?
The Tax Collector collects tax bills. The Assessor determines taxable value and handles many assessment-record questions.
Use the Tax Collector for
- Paying property taxes.
- Secured and unsecured tax bills.
- Supplemental bill payment.
- Prior-year delinquent taxes.
- Payment plans and redemption amounts.
- Payment confirmation and posting questions.
Use the Assessor for
- Assessed value questions.
- Ownership or assessment record issues.
- Supplemental assessment value questions.
- Property exemption questions.
- Informal assessment review.
- Some appeal-related starting points.
San Luis Obispo County Property Tax Video Guide
The County of San Luis Obispo has a public YouTube video explaining SLO County property taxes. Use it as background education, then verify live payment amounts and deadlines on the official county tax portal.
Tax Payment Problems and Practical Fixes
Use this section when the portal, bill type, lender, due date, or payment status creates confusion.
Bill is not found
Try assessment number first, then mailing address or assessee name. Confirm whether you need secured, unsecured, or supplemental search.
Mortgage lender should pay
Lenders may send payment close to the delinquency date. Contact your lender directly for payment policy and proof.
Supplemental bill arrived
Do not assume the lender paid it. The county says supplemental bills are sent directly to the taxpayer.
Mailing near deadline
Use a traceable method and know the legal postmark rule. Last-minute mail creates risk.
Payment made but not posted
Keep confirmation number, canceled check, transaction ID, and date. Call 805-781-5831 if the record does not update.
Need another county?
If your bill is not for SLO County, use the right county guide before paying.
El Dorado County tax collector guideSan Luis Obispo County Tax Collector Map and Directions
The public counter is listed at 1055 Monterey Street, Room D-290, San Luis Obispo, CA 93408. Use the map for directions only and verify current hours before visiting.
Official San Luis Obispo County Tax Collector Links
Use official county links for live payment, assessment search, mail instructions, delinquent payoff, supplemental tax bills, and Assessor questions.
San Luis Obispo County Tax Collector FAQ: Payments, Fees, Due Dates and Bill Help
These answers focus on the exact questions taxpayers ask before paying, mailing, calling, or handling a late bill.
How do I pay San Luis Obispo County property taxes online?
Use the official Taxes on the Web portal. Search by assessment number, mailing address, or assessee name, then verify the bill before paying.
What is the San Luis Obispo County Tax Collector phone number?
The official tax payment phone number is 805-781-5831. For prior-year redemption or payment-plan questions, the Redemption Division number is 805-781-5836.
Where is the San Luis Obispo County Tax Collector office?
The office is at 1055 Monterey Street, Room D-290, San Luis Obispo, CA 93408.
What are the San Luis Obispo County Tax Collector hours?
The official payment guide lists the public counter and phone service as Monday through Friday, 8 AM to 5 PM, except scheduled holidays.
Is eCheck free for SLO County property tax payments?
Yes. The official payment guide says eCheck and paper check payments have no additional charge. Credit and debit card payments require a 2.35% processing fee with a $1.49 minimum.
When are secured property taxes due in San Luis Obispo County?
The first installment is due November 1 and becomes delinquent after December 10. The second installment is due February 1 and becomes delinquent after April 10.
What happens if I pay secured property taxes late?
A late first installment gets a 10% penalty. A late second installment gets a 10% penalty plus a cost. If taxes remain unpaid by June 30, the property becomes tax-defaulted and more penalties and fees can accrue.
When are unsecured property taxes delinquent?
Unsecured property tax bills are issued each year in July and become delinquent if not paid on or before August 31.
Will my lender receive my supplemental tax bill?
No. The county says supplemental tax bills are mailed directly to you. It is your responsibility to contact your lender to determine who will pay the supplemental bill.
Should I call the Tax Collector or the Assessor?
Call the Tax Collector for payment, billing, delinquent taxes, supplemental bill payment, and redemption questions. Contact the Assessor for value, ownership, exemption, or assessment questions.
Final San Luis Obispo County Tax Payment Reminder
Use the official county tax portal, match the assessment number or assessee record, choose the correct bill type, review the payment fee, and save proof after payment. If the issue is delinquent, supplemental, or lender-related, call before assuming an old bill is still accurate.
This is an independent TaxCollectors.org guide. It is not the official County of San Luis Obispo, Tax Collector, Assessor, lender, escrow company, legal adviser, or tax adviser. Verify live payment amounts, deadlines, penalties, fees, office hours, and account status directly with official county sources before acting.