Marin Property Tax Guide: Pay, Search, Due Dates & Exemptions
Marin County property tax can be confusing because the tax bill, assessed value, exemptions, supplemental bills and assessment appeals are handled by different official offices. The safest first step is to identify whether your question is about payment, value, ownership, exemption, or an appeal deadline.
This guide explains how to search and pay a Marin County property tax bill, when secured taxes are due, how exemptions work, how to handle a value disagreement, and when to contact the Tax Collector, Assessor-Recorder-County Clerk, or Assessment Appeals Board.
Quick Answer: Where to Start for Marin Property Tax
For bill lookup, payment, receipt, payment status, penalty, delinquency, installment, or refund routing, start with the Marin County Tax Collector in the Department of Finance.
For assessed value, ownership record, parcel maps, homeowner exemption, value notices, decline-in-value review, business property assessment, or supplemental assessment questions, start with the Marin County Assessor-Recorder-County Clerk.
Fast Route: Choose the Correct Marin County Office
Use this table before opening an official page. It helps avoid the common mistake of calling the Tax Collector for an assessment issue, or calling the Assessor for a payment receipt.
| Your Need | Start Here | Why | Official Action |
|---|---|---|---|
| Pay or view current tax bill | Tax Collector | Payments, bills and receipts are Department of Finance tasks. | Open Tax Bill Online |
| Find APN or assessed value | Assessor | Assessment records and parcel details are Assessor tasks. | Open Assessor Services |
| Homeowner exemption | Assessor | The $7,000 homeowner exemption is assessed-value related. | Open Homeowner Exemption |
| Disagree with assessed value | Assessor, then Assessment Appeals Board | You should review value with the Assessor before filing a formal appeal. | Open Assessment Appeals |
| Supplemental tax bill | Assessor for value; Tax Collector for bill | Supplemental bills often follow ownership change or new construction. | Open Supplemental Taxes |
Marin County Property Tax Due Dates and Calendar
Marin County secured property taxes follow the standard California installment pattern. The first installment is due November 1 and becomes delinquent after 5:00 PM on December 10. The second installment is due February 1 and becomes delinquent after 5:00 PM on April 10.
If a deadline falls on a Saturday, Sunday, or legal holiday, official rules may move the penalty-free deadline to the next business day. Still, pay early whenever possible because mail delays, bank bill-pay delays, and missing payment stubs can create avoidable penalties.
| Date | What It Means | What to Do |
|---|---|---|
| January 1 | Lien date and valuation date for many property tax purposes. | Keep ownership, occupancy, condition, and business property records tied to this date. |
| February 15 | Common exemption claim deadline for several exemption types. | Check Assessor rules for homeowner, veteran, institutional, and related exemptions. |
| April 1 | Business personal property, boat, and aircraft statements are generally due. | Prepare business asset records and file required statements on time. |
| July 2–November 30 | Regular assessment appeal filing period for many annual assessed-value disputes. | Talk with the Assessor first, then file with the Assessment Appeals Board if unresolved. |
| November 1 | First installment of secured property taxes is due. | Review the bill, verify escrow status, and schedule payment early. |
| December 10 | First installment becomes delinquent after 5:00 PM if unpaid. | Pay before the deadline and keep proof of payment or postmark. |
| February 1 | Second installment of secured property taxes is due. | Do not wait for a second reminder; check the original bill or online portal. |
| April 10 | Second installment becomes delinquent after 5:00 PM if unpaid. | Pay early, especially if using bank bill pay or mail. |
- Open Marin County’s official Property Tax Calendar.
- Compare the general calendar to the exact date printed on your bill.
- Use the online bill portal for account-specific amount and payment status.
How to Pay Marin County Property Tax
Marin County allows property owners to view and pay tax bills online. Official payment routes include online payment, phone payment, mail, and in-person options.
For online payment, use the official Tax Bill Online service. For phone payment, Marin County news releases list the automated payment phone number as 1-800-985-7277. E-check payments have been promoted as free, while card payments may include a service fee. Always verify the current fee before submitting payment.
- Open the official Marin County Tax Bill Online portal.
- Search using the parcel number, property identifier, or bill information shown on your tax bill.
- Review the tax year, installment, bill number, amount, penalties, and payment status.
- Choose e-check, card, or another listed method.
- Save or print the confirmation receipt after payment.
| Payment Method | Best For | Important Tip |
|---|---|---|
| Online e-check | Most property owners who want quick proof of payment. | Verify the bank routing and account number before submitting. |
| Online card payment | Owners who prefer credit or debit card payment. | Check the third-party service fee before confirming. |
| Phone payment | Owners who have bill details and want automated phone payment. | Use 1-800-985-7277 only after confirming you are on the official Marin County route. |
| Owners paying by check or money order. | Include the correct payment stub and use a USPS proof option near deadlines. | |
| In person or drop box | Owners who need local drop-off close to a deadline. | Check current office hours and drop box instructions before traveling. |
Bank bill-pay warning: Your bank’s online bill pay is not the same as Marin County’s online payment portal. Schedule bank bill pay several business days early and confirm it posts to the right bill number or parcel.
How to Search a Marin County Property Tax Bill
Use Marin County’s official Tax Bill Online system to look up secured and unsecured property tax bills. The portal is designed for bill lookup and online payment, not legal ownership research.
The parcel number or property identifier is the cleanest search route. If your bill is missing, use the property address, prior bill, closing statement, deed records, or Assessor services to find the correct APN before paying.
- Open the Marin County Tax Bill Online portal.
- Enter the parcel number or property identifier in the format shown on the tax bill.
- Confirm the property, tax year, installment, and bill number.
- Check whether a payment has already posted, especially if escrow may have paid.
- Save the bill page or receipt for your records.
Marin Tax Collector vs Assessor: Do Not Contact the Wrong Office
The Tax Collector and Assessor work on different parts of the property tax process. The fastest route depends on whether your problem is about a bill/payment or about value/ownership/exemptions.
| Topic | Correct Office | Contact / Route | Why |
|---|---|---|---|
| Payment, receipt, penalties, delinquency | Marin County Tax Collector | 415-473-6133; 3501 Civic Center Drive, Suite 202, San Rafael | The Department of Finance handles property tax payment records. |
| Real property assessed value | Assessor’s Office | 415-473-7215; CA Relay 711 | The Assessor handles real property assessment questions. |
| Business or personal property assessment | Assessor’s Office | 415-473-7208; CA Relay 711 | Business personal property is assessed separately from secured real estate bills. |
| Formal assessment appeal | Assessment Appeals Board / Clerk of the Board | Appeal filing page and Clerk of the Board route | Formal value appeals are heard through the board process. |
| Recorded deeds and official records | Recorder | Recorder official records search | Recorded documents are different from tax bill payment records. |
How to Read Your Marin Secured Property Tax Bill
Your secured tax bill usually includes an Assessor Parcel Number, bill number, assessed value information, tax rate area, direct charges, exemptions, installment amounts, due dates, and payment stubs.
Before paying, confirm that the bill belongs to your parcel, tax year, and installment. New owners should compare the bill with escrow closing documents because a seller credit does not always mean the county bill has already been paid.
| Bill Area | Why It Matters | What to Check |
|---|---|---|
| APN / parcel number | Connects the bill to the correct property. | Match it to deed, closing documents, prior bill, or Assessor records. |
| Installment boxes | Shows the first and second payment amounts. | Pay the correct installment and include the right stub if mailing. |
| Exemptions | Can reduce taxable value or direct charges. | Look for missing homeowner, veteran, disabled veteran, or parcel tax exemption issues. |
| Direct charges | May include voter-approved or agency charges separate from basic ad valorem tax. | Contact the listed agency or official route for charge-specific questions. |
| Payment status | Shows whether the county has posted payment. | Verify online before paying if your lender or escrow company may have paid. |
Late Payment Penalties, Postmarks and Tax Default
To avoid penalties, pay the secured first installment by the December 10 delinquency deadline and the second installment by the April 10 delinquency deadline. A payment that is merely scheduled is not always the same as a payment received or properly postmarked.
If property taxes remain unpaid after later deadlines, the property may become tax-defaulted and additional costs can accrue. Marin County’s FAQ warns that tax-defaulted property can face additional redemption costs and monthly penalties.
- Check the online portal for current balance and posted payment status.
- Use the county portal if you need faster confirmation.
- If mailing, use a USPS proof option near deadlines.
- If using bank bill pay, schedule it at least several business days early.
- Do not ignore an unpaid balance because you expected escrow to pay.
Marin Property Tax Exemptions
Marin County property tax exemptions are not all handled in the same way. Homeowner, veteran, disabled veteran, institutional, and certain assessed-value exemptions generally route through the Assessor. Some parcel tax exemptions may require a separate search or agency-specific route.
The basic California Homeowners’ Exemption removes up to $7,000 from assessed value for an eligible owner-occupied principal residence. Marin’s Assessor page explains that this may lower the tax bill by about $70 per year.
| Exemption / Relief | Who It May Help | Where to Start |
|---|---|---|
| Homeowners’ Exemption | Owners who occupy the home as their principal residence on the qualifying date. | Assessor Homeowner Exemption |
| Veterans’ Exemption | Eligible veterans under California property tax rules. | Veterans and Disabled Veterans |
| Disabled Veterans’ Exemption | Qualified disabled veterans or qualifying surviving spouses. | Disabled Veterans’ Exemption |
| Parcel tax exemption | Owners seeking exemption from certain parcel taxes, depending on the taxing agency and rules. | Parcel Tax Exemption Search |
| Property Tax Postponement | Eligible senior, blind, or disabled homeowners seeking to defer current-year property taxes. | Property Tax Postponement |
- Search your current property tax bill and Assessor record.
- Look for the exemption or parcel tax charge you expected to see.
- Use the Assessor exemption page for assessed-value exemptions.
- Use the parcel tax exemption tool for parcel-tax-specific relief.
- Keep copies of claim forms, approval notices, and bill corrections.
Assessment Value, Prop 13 and Decline in Value Review
California property taxes are often based on assessed value rules under Proposition 13, not only current market value. The general property tax rate is limited to 1% of assessed value plus voter-approved local bonds and direct charges.
If market value has declined below the assessed value, you may need a decline-in-value review. Marin’s Assessor provides information for owners who believe their assessed value is too high.
- Search your Assessor record and current assessed value.
- Collect comparable sales, appraisals, listing history, condition photos, and repair evidence.
- Contact the Assessor to discuss the basis for the value.
- If unresolved, review the formal Assessment Appeals Board filing window.
Marin Property Tax Assessment Appeals
If you disagree with your property’s assessed value, Marin County recommends discussing the issue with the County Assessor before submitting a formal assessment appeal. This can resolve some value problems without a board hearing.
For regular assessed-value disputes, the formal filing period is generally July 2 through November 30. For assessments made outside the regular assessment roll, such as supplemental or escape assessments, appeal timing can be shorter and tied to the mailing date on the bill or notice.
| Appeal Type | When It Applies | Deadline Caution | Official Route |
|---|---|---|---|
| Informal Assessor review | You want the Assessor to review the basis of assessed value before formal appeal. | Do not let informal review make you miss the formal filing period. | Understanding Assessments |
| Regular assessment appeal | You disagree with value on the regular assessment roll. | Regular period is generally July 2 through November 30. | Appeal Assessment |
| Supplemental assessment appeal | You disagree with a supplemental assessment after purchase or new construction. | Marin states appeal must be filed within 60 days of mailing date on the Supplemental Tax Bill. | Supplemental Assessment Help |
| Escape or other non-regular assessment | A bill or notice covers an assessment outside the regular roll. | Review bill mailing date, postmark rules, and Clerk of the Board instructions. | Assessment Appeals Info |
Appeal warning: Paying your tax bill and appealing the assessed value are separate. Marin County states you must pay property tax bills by their deadlines to avoid penalties, even when an assessment appeal is pending.
Evidence Checklist for a Marin Assessment Appeal
A strong appeal explains why the assessed value is wrong. Do not rely only on “my taxes are too high.” The board needs evidence tied to value, property condition, comparable sales, ownership change, new construction, or assessment rules.
| Evidence Type | Best For | How to Use It |
|---|---|---|
| Comparable sales | Decline-in-value or market value disputes. | Use nearby, similar properties with sale dates close to the valuation date. |
| Closing statement | New buyers whose assessed value does not match purchase facts. | Show price, date, parties, and whether the sale was arm’s-length. |
| Appraisal or broker analysis | Complex or high-value disputes. | Connect the opinion to the correct lien date or valuation date. |
| Photos and repair estimates | Damage, deferred maintenance, foundation, roof, drainage, or condition issues. | Date photos and explain how each condition affects value. |
| Assessor records | Wrong square footage, use code, parcel facts, or exemption status. | Mark the incorrect field and attach proof. |
| Business asset records | Business personal property assessments. | Use depreciation schedules, asset lists, invoices, and disposal records. |
Supplemental Tax Assessments for New Buyers and Construction
Supplemental tax bills can appear after a change in ownership or completion of new construction. They are separate from the regular secured bill and can surprise new owners who thought escrow already handled everything.
For supplemental value questions, contact the Assessor. For supplemental bill payment, contact the Tax Collector or use the official bill/payment route. Marin also provides a Supplemental Tax Estimator for planning.
- Read the mailing date and tax year on the supplemental bill.
- Compare the new assessed value with purchase or construction details.
- Use the estimator to understand possible supplemental tax impact.
- Pay by the deadline even if you are discussing value with the Assessor.
- File a timely appeal if you disagree and informal review does not resolve it.
New Marin County Property Owner Checklist
New owners should not wait for every issue to correct automatically. Tax bills, supplemental assessments, Assessor records, homeowner exemptions, mailing addresses, and lender escrow can all move on different timelines.
Mortgage Escrow, Closing Credits and Missing Payments
If your mortgage company pays property taxes through escrow, still verify the county payment record. Marin County’s Tax Collector FAQ explains that escrow company payment activity may appear on closing documents, but the safest confirmation is the county payment record.
A seller credit at closing does not always mean the county received payment. It may only mean the buyer and seller adjusted money between themselves at closing.
- Open Tax Bill Online and check current payment status.
- Compare the county record with your mortgage escrow activity.
- Check your closing statement for seller credits or escrow payments.
- Contact your lender immediately if the county still shows unpaid taxes near the deadline.
- Keep proof of any lender payment, confirmation number, or refund communication.
Business, Boat, Aircraft and Unsecured Property Tax
Not all Marin property tax bills are secured real estate bills. Businesses, boats, aircraft, and some personal property may be assessed separately and billed as unsecured property tax.
Business owners should track the January 1 ownership or possession date and the April 1 statement due date. For business or personal property assessments, Marin’s Assessor page lists a separate contact number.
| Property Type | Common Issue | Where to Start |
|---|---|---|
| Business personal property | Asset value, statement filing, location, or depreciation questions. | Assessor business/personal property assessment contact: 415-473-7208. |
| Boats and aircraft | Statement due date, assessed value, situs, or billing questions. | Assessor for value; Tax Collector for payment. |
| Unsecured tax bill | Bill not attached to real property as a lien in the same way as secured bills. | Tax Collector unsecured property tax information. |
Assessor Records, Recorder Records and Mailing Address Changes
Assessor records and Recorder records are not the same. Assessor records are used for property tax assessment, while Recorder records show recorded documents such as deeds.
If your mailing address is wrong, use the official Assessor mailing address change route. If your deed, title, trust, inheritance, or ownership transfer is unclear, the Assessor cannot give legal advice about what document to record.
Common Marin Property Tax Mistakes to Avoid
Most property tax problems become worse because the owner waits too long, contacts the wrong office, assumes escrow paid, or ignores a supplemental bill.
Those are delinquency deadlines. Pay earlier to avoid bank, mail, or portal problems.
Always verify payment on the county portal, especially near delinquency dates.
Supplemental bills can be separate from the annual secured bill and may not be handled the way you expect.
Assessed value questions belong with the Assessor or assessment appeal process.
Homeowner, veteran, disabled veteran, and other claims have timing rules and documentation requirements.
Use comparable sales, condition proof, appraisals, Assessor records, or business asset evidence.
Before You Visit the Marin County Tax Collector
In-person help can be useful for payment questions, bill copies, delinquency issues, or drop-off close to a deadline. Bring the bill or APN so staff can find the correct account quickly.
APN, bill number, property address, owner name, and tax year.
Confirmation number, bank record, canceled check, escrow statement, or mail proof.
Closing statement, deed, trust, probate record, or change of ownership documents if relevant.
Assessor letters, exemption forms, appeal application, and value evidence.
Marin County Tax Collector
3501 Civic Center Drive, Suite 202
San Rafael, CA 94903
Phone: 415-473-6133
Regular public hours listed by Marin County: Monday–Friday, 9:00 AM–4:30 PM.
Related Property Tax Guides on This Site
These internal guides can help you understand property tax terms before using Marin County’s official payment, assessment, exemption, or appeal systems.
Official Marin County Property Tax Links
Use these official links when you are ready to search an account, pay a bill, verify dates, apply for an exemption, file an appeal, or contact the correct county office.
Marin Property Tax FAQs
Where do I pay Marin County property tax online?
Use Marin County’s official Tax Bill Online portal to search and pay secured or unsecured property tax bills. Verify the parcel, tax year, installment and amount before paying.
What are Marin County secured property tax due dates?
The first installment is due November 1 and delinquent after 5:00 PM on December 10. The second installment is due February 1 and delinquent after 5:00 PM on April 10.
Can I pay Marin property tax by phone?
Marin County has listed the automated property tax payment phone number as 1-800-985-7277. Confirm you are using the official county route before entering payment information.
Is e-check free for Marin property tax payments?
Marin County has promoted e-check payments as free through its official online and telephone payment service. Always verify current payment fees before confirming any transaction.
Who handles Marin County property tax payments?
The Marin County Tax Collector in the Department of Finance handles tax bills, payments, receipts, penalties, delinquency and payment status.
Who handles Marin County assessed value questions?
The Marin County Assessor-Recorder-County Clerk handles assessed value, parcel records, many exemptions, value notices, ownership record questions and business property assessments.
How do I search a Marin County property tax bill?
Use the official Tax Bill Online portal and search by parcel number, property identifier or bill details. Confirm the correct parcel before paying.
What is the Marin County Homeowners’ Exemption?
The Homeowners’ Exemption may remove up to $7,000 from assessed value for an eligible owner-occupied principal residence, which Marin’s Assessor explains may lower taxes by about $70 per year.
Where do I apply for a Marin homeowner exemption?
Start with the Marin County Assessor-Recorder-County Clerk Homeowners’ Exemption page and use the official claim form and instructions.
Does Marin County have veteran or disabled veteran property tax exemptions?
Yes. Marin’s Assessor provides official guidance for Veterans’ Exemption and Disabled Veterans’ Exemption. Qualified disabled veterans should review that route because it may provide greater savings.
What is the Marin assessment appeal filing period?
For many regular assessment roll disputes, Marin County’s annual assessment appeal filing period is generally July 2 through November 30. Check the current Assessment Appeals Board instructions before filing.
Should I talk to the Assessor before filing an assessment appeal?
Yes. Marin County recommends meeting or speaking with the County Assessor to discuss the assessment before submitting a formal appeal.
Do I still need to pay property taxes if I appeal the assessed value?
Yes. Marin County states that tax bills must be paid by the deadlines to avoid penalties, even when an assessment review or appeal is pending.
What is a supplemental tax assessment in Marin County?
A supplemental assessment can occur after change in ownership or new construction. It may create a bill separate from the regular annual secured tax bill.
How long do I have to appeal a supplemental assessment?
Marin County states that a supplemental assessment appeal must be filed within 60 days of the mailing date on the Supplemental Tax Bill. Check the actual bill and official appeal instructions.
What if my mortgage company should have paid the bill?
Check the official Tax Bill Online portal for posted payment status and compare it with your lender escrow records. Contact your lender immediately if payment has not posted near a deadline.
What happens if Marin property taxes are late?
Late payments can incur penalties. If taxes remain unpaid long enough, the property can become tax-defaulted and additional redemption costs and monthly penalties may accrue.
Where is the Marin County Tax Collector office?
The Marin County Tax Collector is listed at 3501 Civic Center Drive, Suite 202, San Rafael, CA 94903. The main Tax Collector phone number is 415-473-6133.
What number should I call for Marin real property assessment help?
Marin’s Assessor page lists 415-473-7215 for real property assessment help and CA Relay 711.
What number should I call for Marin business property assessment help?
Marin’s Assessor page lists 415-473-7208 for business or personal property assessment help and CA Relay 711.
Can I search Marin County recorded documents online?
Yes. Use the Marin County Recorder’s Official Records Search for recorded documents. This is separate from tax bill payment and Assessor records.
Is CountyPropertyTaxes.us an official Marin County website?
No. CountyPropertyTaxes.us is an independent informational guide. Use official Marin County pages for final account-specific actions, payments, filings and legal deadlines.
Bottom Line
For Marin property tax, use the Tax Collector for bill lookup, payment, receipt and penalty questions. Use the Assessor for value, exemption, ownership and assessment questions. Use the Assessment Appeals Board route when a value dispute cannot be resolved informally and the filing window is open.
Pay or Search BillDue DatesExemptionsAppealsOfficial Links