2026–2027 California Property Tax Bills Are Here! Don’t Miss These Deadlines.
Important property tax deadlines, late-payment penalties, supplemental tax bills, and what Newport Beach, Costa Mesa, and Laguna Beach homeowners need to know—Especially If You Just Bought a Home!
Your 2026–2027 California property tax bill is officially available!
EXECUTIVE SUMMARY:
- First Installment: Due November 1, 2026 — pay by December 10, 2026 to avoid penalties.
- Second Installment: Due February 1, 2027 — pay by April 12, 2027 to avoid penalties (extended because April 10 falls on a Saturday).
- Just Bought a Home? Your tax bill may still show the previous owner’s name or assessed value. Don’t ignore it! You may also receive a separate supplemental property tax bill.
- Didn’t Receive Your Bill? You’re still responsible for paying on time, even if the bill never arrives.
Keep reading for important details about supplemental assessments, payment pitfalls, and property tax rules every California homeowner should understand.
Orange County’s secured property tax bills are now online and being mailed to homeowners. And while paying property taxes may not be anyone’s favorite part of homeownership, overlooking a deadline can become a very expensive mistake.
Especially here in coastal Orange County, where property values—and the corresponding property tax bills—can be substantial.
But this year, we want to address something that catches many new homeowners by surprise:
What happens when you just purchased your home, receive a property tax bill, and it still has the previous owner’s name on it?
Spoiler alert: You can’t ignore it. It’s still a valid tax bill, and as the new owner, you’re responsible for making sure the property taxes are paid.
We’ll explain that below, along with the important 2026–2027 deadlines, how supplemental tax bills work, and why homeowners should never assume that escrow or their mortgage company has handled everything.
Let’s get into it!
2026–2027 California Property Tax Deadlines: Mark Your Calendar!
California’s regular secured property taxes are generally paid in two installments.
But there’s an important distinction between when an installment is technically due and when it becomes delinquent.
Here’s what you need to know for the 2026–2027 property tax year:
| Installment | Due Date | Last Day to Pay Without Penalty |
|---|---|---|
| First Installment | November 1, 2026 | Thursday, December 10, 2026 |
| Second Installment | February 1, 2027 | Monday, April 12, 2027 |
Wait—Why Is the Second Deadline April 12 Instead of April 10?
Good question!
Normally, California’s second property tax installment becomes delinquent after April 10.
But April 10, 2027 falls on a Saturday.
Under California’s property tax rules, when the delinquency date falls on a Saturday, Sunday, or applicable legal holiday, the deadline moves to the next business day.
That makes Monday, April 12, 2027, the deadline for the second installment.
We’ve checked the deadline rules against both Orange County and Los Angeles County.
The December 10, 2026 deadline falls on a Thursday, so there’s no corresponding extension for the first installment.
Our advice? Don’t wait until the last day.
A payment processing issue, forgotten bill, or mailing delay can turn into an expensive problem very quickly.
Orange County Homeowners: Here’s Where to Find and Pay Your Bill
Whether you own a home in Newport Beach, Eastside Costa Mesa, Corona del Mar, Newport Coast, Laguna Beach, or elsewhere in Orange County, you can look up your property tax bill directly through the Orange County Treasurer-Tax Collector.
View and Pay Your Orange County Property Tax Bill
You can generally search using your property address or Assessor’s Parcel Number (APN).
And if you own property in Los Angeles County:
Los Angeles County Property Tax Portal
For Orange County homeowners, paying by electronic check through the county’s official payment system is generally free. Credit and debit card transactions may carry processing fees.
You can also sign up for optional text or email reminders through the Orange County Treasurer-Tax Collector.
That’s a great idea.
Just remember that reminders are a convenience—not a substitute for making sure your taxes are paid.
Just Bought a Home? What If Your Property Tax Bill Still Has the Previous Owner’s Name?
This is one of the most important things we want new California homeowners to understand.
Imagine this:
You purchase a beautiful home in Newport Beach in August 2026.
Escrow closes. You get your keys. You’re officially the proud new homeowner.
Then October rolls around, and a property tax bill arrives.
Except there’s a problem.
The bill still has the previous owner’s name on it!
Maybe it even reflects a much lower assessed value than what you just paid for the property.
So you might reasonably think:
“This must be the seller’s bill. Surely the county will send me a corrected one.”
Not so fast!
The Previous Owner’s Name Does NOT Mean You Can Ignore the Bill
Here’s the important rule:
If you now own the property, you are responsible for ensuring that its secured property taxes are paid—even if the annual tax bill still shows the previous owner’s name.
The Orange County Treasurer-Tax Collector specifically addresses this situation.
Annual secured property tax bills are based on ownership and assessed values associated with the January 1 lien date.
If you purchased your home after January 1, 2026, your 2026–2027 annual bill may still reflect the previous owner’s information.
The county may need additional time to process the change in ownership and supplemental assessment.
That does not invalidate the annual tax bill.
And it certainly doesn’t mean you can wait for a new bill before paying.
But Didn’t the Seller Pay Their Share Through Escrow?
Generally, yes—at least that’s how most transactions are structured.
In a typical California real estate sale, property taxes are prorated between the buyer and seller through escrow based on the closing date and the parties’ agreement.
For example, if you purchased a property in August, the seller would generally receive a debit or credit for their portion of the applicable property tax period, and you would receive the corresponding adjustment.
But here’s where buyers sometimes get confused:
A property tax proration on your closing statement does not necessarily mean the county’s tax bill has already been paid.
Sometimes the taxes are actually paid through escrow.
Other times, the parties simply receive credits or debits on the closing statement, leaving the appropriate party to make the actual payment when due.
The distinction matters.
Your escrow closing statement should indicate what was paid, credited, or prorated.
If you’re unsure, contact your escrow officer or real estate agent.
And regardless of the escrow accounting, verify the payment status directly with the county.
What Should You Do If the Bill Still Has the Seller’s Name?
Don’t throw it away. Don’t wait for a replacement.
Instead:
- Confirm that the property address and Assessor’s Parcel Number match your property.
- Review your escrow closing statement to determine how property taxes were prorated and whether any installments were actually paid.
- Check the county’s online tax portal for outstanding installments.
- Make sure any unpaid secured property taxes are paid by the applicable deadline.
- Contact the Assessor if the ownership information remains incorrect or you have questions about your supplemental assessment.
The county’s ownership records will generally be updated through its normal assessment process.
Bottom line: The wrong name on the bill doesn’t mean it’s the wrong bill.
And if the property is yours, you need to make sure the taxes secured by that property are paid.
New Homeowners: Don’t Forget About Supplemental Property Tax Bills!
Now let’s talk about another surprise that catches California homebuyers every year.
Supplemental property taxes.
When you purchase a California property, the change in ownership generally triggers a reassessment under Proposition 13, unless an applicable exclusion applies.
But the county’s regular annual tax bill may still be based on the previous owner’s assessed value.
So how does the county collect the difference?
Through a supplemental assessment and, where applicable, a supplemental property tax bill.
Example: Buying a $2.5 Million Newport Beach Home
Let’s say you purchase a Newport Beach home for $2.5 million.
The previous owner purchased the property decades ago, and its assessed value is only $900,000.
Your initial annual property tax bill might still be calculated using that older $900,000 assessed value.
But because the purchase generally establishes a new taxable value, the county may issue a supplemental assessment based on the difference between the old taxable value and the new assessed value.
In this simplified example:
| Item | Amount |
|---|---|
| Previous Assessed Value | $900,000 |
| New Assessed Value | $2,500,000 |
| Difference in Assessed Value | $1,600,000 |
That $1.6 million difference is not itself the tax owed.
Rather, it represents the potential additional assessed value used to calculate supplemental taxes for the applicable portion of the tax year.
The actual supplemental tax amount depends on the relevant dates, applicable tax rates, and other assessment considerations.
And yes, you may receive more than one supplemental bill.
Depending on when the ownership change occurs, a supplemental assessment can affect portions of two fiscal years.
Isn’t This Covered in the Paperwork I Signed During Escrow?
It should certainly be part of the information buyers receive during the transaction.
California residential buyers commonly receive an advisory regarding supplemental property tax bills, including the Notice of Supplemental Property Tax Bill used in California real estate transactions.
The purpose is to alert buyers that they may receive additional property tax bills after closing.
Unfortunately, among the many documents involved in purchasing a home, this warning can be easy to overlook.
And months later, when the supplemental bill finally arrives, some buyers are understandably surprised.
Our advice: Budget for the supplemental assessment when you purchase the property—not when the bill finally arrives.
Will My Mortgage Company Pay the Supplemental Bill?
Don’t assume so!
If you have a mortgage impound or escrow account, your lender may collect money each month toward your regular property taxes and insurance.
But supplemental property tax bills are often not automatically included in those arrangements.
You may be responsible for paying the supplemental bill directly, even if your lender handles your regular annual property tax installments.
Always check with your loan servicer.
Also, remember that supplemental bills have their own payment deadlines, which depend on when they are issued.
Don’t assume the regular December 10 and April 12 deadlines apply to every supplemental bill.
And one final distinction: If a property changes hands multiple times, an unsecured supplemental tax bill attributable to a prior owner’s period of ownership may be that prior owner’s responsibility. Verify the bill type and assessment period rather than assuming every bill associated with the parcel belongs to you.
Didn’t Receive Your Property Tax Bill? Unfortunately, That’s Still Your Problem.
We see this situation regularly.
A homeowner moves.
A property transfers into a trust.
Someone purchases an investment property but lives elsewhere.
Or the county simply hasn’t updated the mailing address.
Then the payment deadline passes.
And the homeowner says:
“But I never received my property tax bill!”
Unfortunately, that generally does not excuse a late payment.
California property owners remain responsible for paying their taxes on time, even if the bill was lost, delayed, or sent to an outdated address.
Counties send annual bills and may offer optional reminders, but you should not rely exclusively on receiving either.
If you haven’t received your bill, check the county’s online records.
If you’ve recently purchased, inherited, or transferred property, make sure the Assessor has your correct mailing address.
And if you own multiple properties, consider checking every parcel individually.
A few minutes online could save you thousands of dollars.
How Much Can a Late Property Tax Payment Cost in Newport Beach or Costa Mesa?
Let’s talk numbers.
Under California’s secured property tax system, a late installment generally triggers a 10% penalty on the unpaid installment.
And the second installment can carry an additional delinquency cost.
That can become painful very quickly when you’re dealing with high-value Orange County real estate.
Example: A $4 Million Coastal Home
Let’s assume a Newport Beach homeowner has an annual property tax bill of $40,000, divided into two $20,000 installments.
| Scenario | Amount |
|---|---|
| Annual Property Tax Bill | $40,000 |
| First Installment | $20,000 |
| Second Installment | $20,000 |
| 10% Penalty on One Late Installment | $2,000 |
That’s a $2,000 penalty for missing just one installment deadline.
If both installments become delinquent, the combined initial 10% penalties could total $4,000, plus applicable additional costs.
And those are penalties—not payments that reduce the original tax obligation.
If delinquency continues beyond the tax year, further penalties, interest-like charges, and ultimately tax-defaulted property proceedings may become relevant.
For homeowners in Newport Coast, Corona del Mar, Dover Shores, Bayshores, Eastside Costa Mesa, and Laguna Beach, the amounts can be even higher.
Don’t give the county money you didn’t need to spend.
Mailing Your Payment? Be Careful With Postmarks!
One more practical reminder.
If you’re mailing your property tax payment, don’t assume that dropping an envelope into a mailbox on December 10 or April 12 automatically means it will receive an acceptable postmark that day.
Mail processing and postmark timing can vary.
And some postage methods may not produce the traditional USPS postmark needed to establish timely mailing.
If you prefer paying by mail, send your payment early and follow the county’s published postmark requirements.
Better yet, consider using the county’s official electronic payment portal and save your confirmation.
It’s one less thing to worry about.
Property Tax Issues Don’t End With Paying the Bill: Proposition 19, Trusts & Ownership Changes
For many Orange County homeowners, the bigger property tax questions go well beyond annual payment deadlines.
At Lucas Real Estate Group, we regularly help clients navigate real estate transactions involving:
- Proposition 19 base-year transfers for eligible homeowners.
- Parent-child transfers and inherited real estate.
- Trust and estate property sales.
- Family transfers and gifting strategies.
- LLC ownership and changes in ownership.
- Investment property acquisitions and sales.
These situations can involve important reassessment rules, filing requirements, exclusions, and deadlines.
For example, an eligible homeowner purchasing a replacement principal residence may be able to transfer an existing taxable value under Proposition 19, subject to the applicable requirements.
Similarly, certain family transfers may qualify for reassessment exclusions—but those exclusions are far more limited under current law than they were under the former Proposition 58 and Proposition 193 rules.
And changes in ownership involving trusts or legal entities can have consequences that are not always obvious from the recorded deed.
The takeaway? Property tax planning should begin before you transfer or purchase real estate—not after the county sends an unexpected bill.
Think Your Property Tax Bill Is High? Wait Until You See Orange County’s Biggest Taxpayers!
If your annual property tax bill makes you cringe, you might find some comfort in knowing you’re in good company!
Every year, some of Orange County’s biggest property owners pay staggering amounts in property taxes. According to the Orange County Auditor-Controller’s FY 2024–2025 Annual Comprehensive Financial Report, the county’s five largest secured property taxpayers were:
| Rank | Taxpayer | Annual Property Taxes |
|---|---|---|
| 1 | Irvine Company | $201.7 million |
| 2 | Walt Disney Parks & Resorts | $85.7 million |
| 3 | Southern California Edison | $74.3 million |
| 4 | Sempra Energy | $24.0 million |
| 5 | United Laguna Hills Mutual | $14.9 million |
That’s more than $400 million combined from just five taxpayers!
Of course, these are major corporate and institutional property owners, not individual homeowners. But it’s a fascinating reminder of just how much property tax revenue Orange County generates—and why understanding your own assessment, exemptions, and payment deadlines matters.
Want to see how the biggest taxpayers stack up? Check out the Orange County Treasurer-Tax Collector’s Top 20 Property Taxpayers.
Frequently Asked Questions: 2026–2027 California Property Taxes
When are California property taxes due for 2026–2027?
The first installment is due November 1, 2026, and may be paid without a delinquency penalty through December 10, 2026.
The second installment is due February 1, 2027, with a penalty-free deadline of April 12, 2027, because April 10 falls on a Saturday.
These dates apply to regular secured property tax bills. Supplemental and unsecured tax bills may have different deadlines.
Why is the April 2027 property tax deadline April 12 instead of April 10?
April 10, 2027 falls on a Saturday. Under California’s weekend and legal holiday rules, the deadline moves to the next business day, Monday, April 12, 2027.
I just bought my home. Why does the property tax bill still have the previous owner’s name?
Annual tax bills generally use ownership and assessed-value information associated with the January 1 lien date. If you purchased after that date, the county’s annual bill may still show the previous owner’s name and assessed value.
The bill remains valid, and the new owner must ensure that the secured property taxes are paid.
Do I have to pay a property tax bill with someone else’s name on it?
If it is the valid annual secured tax bill for property you now own, you must make sure it is paid.
Check your escrow closing statement to determine whether the taxes were already paid or merely prorated between buyer and seller.
Different rules may apply to certain unsecured supplemental bills attributable to a previous owner.
Didn’t I already pay property taxes when I closed escrow?
Not necessarily.
Property taxes are commonly prorated between buyer and seller, but a proration is not always an actual payment to the county.
Review your settlement statement and verify the payment status directly with the Tax Collector.
What is a supplemental property tax bill?
A supplemental bill generally reflects an adjustment in taxable value following a change in ownership or qualifying new construction.
It is separate from the regular annual property tax bill and may arrive months after the transaction.
Can I receive two supplemental property tax bills?
Yes. Depending on the date of the ownership change or completion of construction, supplemental assessments may affect portions of two fiscal years.
Will my mortgage company automatically pay supplemental property taxes?
Not necessarily.
Even if your lender maintains a property tax impound account, supplemental bills may require separate payment by the homeowner.
Confirm the arrangement with your loan servicer.
What if I never received my property tax bill?
You generally remain responsible for timely payment.
Look up your property online using its address or Assessor’s Parcel Number, and make sure the Assessor has your current mailing address.
Can I pay both installments at once?
Yes. Homeowners can generally pay the entire annual secured property tax bill at once rather than waiting for the second installment.
What happens if I miss the deadline?
A delinquent secured property tax installment generally incurs a 10% penalty. Additional costs and charges may apply, particularly if the second installment becomes delinquent or the taxes remain unpaid.
Where can I pay my Orange County property taxes online?
Visit the official Orange County Treasurer-Tax Collector property tax portal.
For Los Angeles County properties, visit the Los Angeles County Property Tax Portal.
The Bottom Line: Don’t Let a Simple Property Tax Mistake Cost You Thousands
California property taxes aren’t complicated once you understand the basic rules.
But the consequences of overlooking them can be expensive.
Remember these three things:
First: Mark December 10, 2026 and April 12, 2027 on your calendar.
Second: If you recently purchased a home, don’t ignore a bill simply because it still has the previous owner’s name.
Third: If you’re expecting a supplemental property tax bill, plan for it now—and don’t assume your lender or escrow company will automatically handle it.
Whether you own a primary residence in Newport Beach, an investment property in Costa Mesa, or a vacation home in Laguna Beach, staying informed is one of the easiest ways to protect your investment.
And when it comes to more complicated property tax issues involving Proposition 19, trusts, inheritance, or changes in ownership, getting the right advice before making a decision can be especially valuable.
Questions or Need Help?
At Lucas Real Estate Group, we believe real estate representation should extend well beyond simply buying or selling a property.
With the combined experience of Devin R. Lucas, Real Estate Broker, REALTOR®, and California Real Estate Attorney, and Courtney Lucas, CPA and REALTOR®, we help clients navigate the legal, financial, and practical considerations that come with real estate ownership.
Whether you’re buying, selling, investing, or managing property in Newport Beach, Costa Mesa, Laguna Beach, or surrounding Orange County communities, we’re here to be a resource.
For traditional real estate sales, purchases, and property management inquiries, we welcome the opportunity to provide a complimentary initial consultation.
Phone: 949-478-1623
Email: info@lucas-real-estate.com
For individualized legal advice involving property tax reassessments, Proposition 19, trusts, family transfers, or complex ownership structures, please schedule a paid consultation.
About the Authors
Devin R. Lucas is a California Real Estate Attorney, Real Estate Broker, and REALTOR® specializing in Newport Beach, Costa Mesa, and surrounding Orange County coastal communities.
Courtney Lucas is a licensed CPA, Real Estate Salesperson, and REALTOR®.
Together, they lead Lucas Real Estate Group, affiliated with Coldwell Banker Newport Beach and the Coldwell Banker Global Luxury program.
Their approach combines luxury real estate representation with practical legal, tax, and property ownership knowledge to help clients make informed decisions.
Guiding Your Real Estate Journey | Managing Your Real Estate Investments
Sources & Additional Reading
For additional information about California’s 2026–2027 property tax deadlines, annual secured property tax bills, supplemental assessments, changes in ownership, and Proposition 19, we recommend the following official government resources:
- Orange County Treasurer-Tax Collector — Current Year Secured Property Taxes — Official guidance on annual property tax bills, payment responsibilities, late penalties, and bills that still show the previous owner’s name.
- Orange County Treasurer-Tax Collector — General Property Tax FAQs — Frequently asked questions about property tax payments, deadlines, and county procedures.
- Orange County Treasurer-Tax Collector — Supplemental Property Taxes — Explains supplemental property tax bills issued after a change in ownership or new construction.
- Orange County Assessor — Notice of Supplemental Assessment — Official information about reassessments following property purchases and qualifying new construction.
- Los Angeles County Property Tax Portal — Frequently Asked Questions — Additional county guidance regarding property tax installments, delinquency dates, and payment requirements.
- California Revenue and Taxation Code Section 2617 — Property Tax Delinquency Dates — California law governing delinquency dates, including extensions when a deadline falls on a weekend or legal holiday.
- California State Board of Equalization — Proposition 19 — Official guidance on eligible property tax base-year transfers, parent-child exclusions, and reassessment rules.
- Orange County Treasurer-Tax Collector — View and Pay Your Property Tax Bill — Official portal for looking up secured property tax bills, checking payment status, and making payments.
- Orange County Auditor-Controller – FY 2024–2025 Annual Comprehensive Financial Report – Official Orange County financial report identifying the county’s largest secured property taxpayers, including Irvine Company, Disney, and Southern California Edison.
Disclaimer
This article is provided for general informational purposes only and does not constitute individualized legal, tax, accounting, or financial advice. Property tax obligations, exemptions, reassessment rules, and payment requirements depend on the facts of each property and transaction. Readers should verify current information with the applicable county offices and consult qualified professionals regarding their individual circumstances.
Devin R. Lucas is licensed to practice law in California and provides legal services only pursuant to a written legal services agreement. Nothing in this article creates an attorney-client relationship. Some jurisdictions may consider this website attorney advertising.
Any discussion of federal or state tax matters is intended for general informational purposes and should not be relied upon as a substitute for individualized professional advice.
