Search, Pay or Fix an SLO County Tax Bill
Use this guide to find the correct secured, unsecured or supplemental bill, compare payment fees, check deadlines, reach the Tax Collector or switch to the Assessor when the problem is value or property-record related.
The official county portal handles the live bill and payment. The sections below explain what to search, what to verify and what to do when a lender, late balance or supplemental bill makes the account less straightforward.
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.
1055 Monterey St., Room D-290.
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 |
|---|
Monday-Friday, 8:00 a.m.-5:00 p.m.
eCheck $0; card 2.35%, $1.49 minimum.
805-781-5643, Suite D360.
Which San Luis Obispo County tax bill are you dealing with?
Homes, land and other real property. Annual bill uses the November 1/December 10 and February 1/April 10 installment schedule.
Business equipment, boats, aircraft and similar taxable property. 2026 bills are due in one installment by August 31, 2026.
Often triggered by a purchase, ownership change or new construction. It is separate from the annual secured bill and has its own delinquent dates.
How to search and pay SLO County property taxes online
Use the portal fields the way San Luis Obispo County expects
| Search route | County format | Best first try | If it fails |
|---|---|---|---|
| Assessment number | Nine digits, entered as three groups; exclude commas, spaces and hyphens. | Use the number printed on the tax bill. | Confirm the tax year and whether you selected secured or unsecured. |
| Mailing address | Street name can be searched without the number; do not enter the city. | Start with street name only for a broad result set. | Add street number and/or ZIP; remove unnecessary symbols. |
| Assessee name | Last name first, no commas. | Last name only. | Remove symbols and extra name parts before narrowing. |
| Unsecured bill | Assessment number, billing address or name search. | Use the bill assessment number when available. | Call 805-781-5831 for current/delinquent unsecured bill help. |
Compare online, phone, mail and in-person payment
| Method | Published fee/rule | Useful when | Keep |
|---|---|---|---|
| Online eCheck | No additional processing fee. | You want the lowest-cost online route. | Confirmation page and bank record. |
| Online card | 2.35% processing fee; $1.49 minimum. | Card convenience matters more than the percentage fee. | Transaction confirmation. |
| Phone | County supports electronic payment by phone during business hours; fees depend on method. | You need staff/payment assistance. | Confirmation/reference number. |
| In person | Cash, check, cashier’s check, money order and major cards are accepted; card processing fee applies. | You need a counter receipt or account help. | Dated receipt. |
| Paper check has no additional processing fee. | You can safely meet the postmark rule. | Check image and proof of timely USPS acceptance. |
San Luis Obispo County Tax Collector phone, address and hours
1055 Monterey Street
Room D-290
San Luis Obispo, CA 93408
Mail ZIP: 93408-1003
Tax bill/payment help: 805-781-5831
Redemption/payment plans: 805-781-5836
Fax: 805-781-5362
| Day | Hours | Before you call or visit |
|---|---|---|
| Monday | 8:00 a.m.-5:00 p.m. | Assessment number and tax year. |
| Tuesday | 8:00 a.m.-5:00 p.m. | Bring payment proof for posting issues. |
| Wednesday | 8:00 a.m.-5:00 p.m. | Know whether the bill is secured, unsecured or supplemental. |
| Thursday | 8:00 a.m.-5:00 p.m. | For late tax, ask for today’s payoff rather than estimating. |
| Friday | 8:00 a.m.-5:00 p.m. | Check scheduled county holiday closures. |
Secured property-tax due dates and penalties
Supplemental property-tax bills have a different calendar
Supplemental bills can follow a change in ownership or new construction and are in addition to the regular annual secured bill. The assessed-value question belongs with the Assessor; payment and delinquency belong with the Tax Collector.
| Bill mailed | 1st installment delinquent | 2nd installment delinquent |
|---|---|---|
| July-October | December 10 | April 10 |
| November | December 31 | April 30 |
| December | January 31 | May 31 |
| January | February 28 | June 30 |
| February | March 31 | July 31 |
| March | April 30 | August 31 |
| April | May 31 | September 30 |
| May | June 30 | October 31 |
| June | July 31 | November 30 |
Unsecured taxes for business equipment, boats and aircraft
Unsecured property tax is assessed against taxable property that is not secured by real estate. San Luis Obispo County lists business equipment, boats and aircraft as common examples.
Pay on or before August 31, 2026. These bills are payable in one installment.
The assessed owner as of the January 1 lien date is generally responsible even if the asset is later sold or removed.
Unsecured bills are mailed in July. If you did not receive one by July 31, use the official unsecured search or call the office.
| Stage | County rule | What to do |
|---|---|---|
| Initial delinquency | 10% delinquency penalty is added. | Request the current payoff; do not pay only the old face amount. |
| Lien | A lien may be recorded in the assessed owner’s name and can affect credit records. | Ask what is required for full lien release. |
| After lien recording | Interest of 1.5% of the original unpaid tax is added on the first day of each month. | Call for the exact payoff through the intended payment date. |
| DMV hold | Full payment can trigger an electronic release process; the taxpayer then contacts DMV for required tags. | Confirm full payment and release status before visiting DMV. |
What happens after secured property becomes tax-defaulted?
Monthly vs annual payment plans for prior-year secured taxes
| Feature | Monthly plan | Annual plan |
|---|---|---|
| Setup fee | $96 one time. | $73 one time. |
| Starting payment | Payments of at least $100, subject to statement-processing fee. | At least 20% of the redemption amount plus required current/supplemental taxes. |
| Statement fee | $10 for email or $12 for physical mail per recurring payment statement under current county guidance. | No equivalent monthly statement fee described. |
| Power-to-sell protection | Does not protect the parcel from recording of Power of Sale. | A properly maintained annual plan protects the parcel from Power to Sell even beyond year five. |
| Current-year taxes | Not included; pay separately. | Not included; current and supplemental taxes must remain current under plan rules. |
| Interest | 1.5% per month continues under the county’s stated rules. | 1.5% per month continues on unpaid prior-year amount. |
Mortgage escrow does not remove your need to verify the county account
San Luis Obispo County Assessor property search and office routing
The Assessor’s Property Information Search provides property-assessment information and the office maintains building record and appraisal information for current owners. It is not the same as the Tax Collector’s live amount-due portal.
| Question | Correct office | Contact/action |
|---|---|---|
| How much do I owe? | Tax Collector | 805-781-5831 or Taxes on the Web. |
| Did my payment post? | Tax Collector | Have assessment number, payment date and confirmation/check number. |
| Why is the assessed value different? | Assessor | Use Assessor property information or call 805-781-5643. |
| Need building/appraisal information? | Assessor | Start with Property Information Search or Assessor counter. |
| Change tax-bill mailing address? | Assessor | County says the owner must submit the signed change in writing and include assessment numbers. |
| Supplemental value seems wrong? | Assessor | Assessor handles the value/reassessment; Tax Collector handles payment. |
Suite D360
San Luis Obispo, CA 93408
Phone: 805-781-5643
Hours: Monday-Friday, 8:00 a.m.-5:00 p.m.
Atascadero, CA 93422
Phone: 805-461-6143
Hours: Monday-Friday, 8:00 a.m.-4:00 p.m.
Mailing a tax payment: small details that prevent processing problems
1055 Monterey Street
Room D-290
San Luis Obispo, CA 93408-1003
- Sign the check or money order.
- Write the assessment number(s) being paid.
- Include the correct payment stub(s).
- Avoid paper clips, staples and tape.
- Do not send cash.
Managing several San Luis Obispo County assessments
The county’s Property Tax Management System is designed for taxpayers who manage one or multiple assessments. It can provide a combined view, support single or combined payments, send reminder emails and enable paperless billing.
Before you submit money
County Government Center map and visit checklist
Use these sources when you are ready to act
San Luis Obispo County Tax Collector FAQs
How do I pay San Luis Obispo County property taxes online?
Use the official San Luis Obispo County Taxes on the Web system. Search secured property by assessment number, mailing address or assessee name, open the correct bill, verify the tax year and installment, choose eCheck or card, and save the confirmation. eCheck has no additional processing fee; card payments carry a 2.35% processing fee with a $1.49 minimum.
What is the San Luis Obispo County Tax Collector phone number?
The Tax Collector number for bill and payment help is 805-781-5831. For prior-year secured-tax redemption and payment-plan questions, call 805-781-5836.
What are the San Luis Obispo County Tax Collector office hours?
The public service counter at 1055 Monterey Street, Room D-290, San Luis Obispo, CA 93408 is listed as open Monday-Friday from 8:00 a.m. to 5:00 p.m., except scheduled holidays.
When are San Luis Obispo County secured property taxes due?
The first installment is due November 1 and becomes delinquent after December 10. The second is due February 1 and becomes delinquent after April 10. If a delinquency date falls on a weekend or holiday, the county applies its next-business-day rule.
What fees apply when paying San Luis Obispo County property taxes?
eCheck has no additional processing fee. Credit and debit card payments require a 2.35% processing fee with a $1.49 minimum. Review the final total before submitting.
When are 2026 San Luis Obispo County unsecured property taxes due?
The county states that 2026 unsecured taxes for business equipment, boats, aircraft and similar property must be paid on or before August 31, 2026. The assessed owner as of January 1 is generally responsible under the lien-date rule even if the asset is later sold or removed.
Why did I receive a supplemental property tax bill after buying a home?
A change in ownership or new construction can trigger reassessment and a separate supplemental bill. It is in addition to the annual secured bill. The county warns that lenders may not automatically pay supplemental bills, so check the bill’s own delinquent dates and contact your lender directly.
What happens when San Luis Obispo County property taxes become tax-defaulted?
If secured taxes remain unpaid as of 5:00 p.m. June 30, the property becomes tax-defaulted. The county adds a $15 redemption fee and 1.5% monthly penalties on the original unpaid tax. After five years of tax default, the property can become subject to Power to Sell.
Does San Luis Obispo County offer payment plans for delinquent property taxes?
Yes. Eligible prior-year secured accounts may qualify for monthly or annual plans before the fifth year of default. The monthly plan currently lists a $96 setup fee; the annual plan begins with at least 20% of the redemption amount plus a $73 setup fee. Current and supplemental taxes remain separate.
Should I contact the San Luis Obispo County Tax Collector or Assessor?
Use the Tax Collector for bills, payments, receipts, penalties, unsecured taxes, supplemental payment and delinquency. Use the Assessor for assessed value, property information, building/appraisal records and signed mailing-address changes.