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Updated 2025 Tax Year

Modoc County
Property Tax Guide

Everything you need to know about property taxes in Modoc County, CA. Rates, due dates, exemptions, and how it affects your monthly payment.

9 Official Sources
8 min read
Quick Facts
Tax Rate
1.0% to 1.3% of assessed value (varies by special districts)
1st Due
Nov 1
2nd Due
Feb 1
Exemptions
4+ Available
Section 1

How Property Tax Works

Modoc County property taxes are the primary funding source for essential local services including public schools, fire protection, law enforcement, libraries, and county operations. Property taxes in Modoc County are administered under California's Proposition 13 system, which caps the base tax rate at approximately 1% of assessed value and limits annual assessment increases to 2%. The Modoc County Assessor determines property values, while the Tax Collector handles billing and collection of all secured, supplemental, and unsecured property taxes.

Effective property tax rates in Modoc County typically range from 1.0% to 1.3% of assessed value, depending on your specific location within the county. The actual rate you pay varies significantly based on which special taxing districts serve your property, such as school districts, fire districts, and other local assessment districts. For example, properties within the Last Frontier Healthcare District pay an additional $195 annual assessment that was approved by voters in 2010. Property owners should verify their specific Tax Rate Area (TRA) to understand which local taxes apply to their property.

Section 2

What Makes Up Your Tax Bill

The following represents the typical tax rate components for Modoc County properties for FY 2025-2026:

ComponentApproximate RateDescription
County General Fund0.25-0.35%County operations, roads, public safety
School Districts0.40-0.60%Local elementary and high school districts
State Education0.35%Mandated state school funding
Fire Protection0.05-0.15%Local fire district services
Last Frontier Healthcare DistrictVaries$195 flat assessment per property (specific district only)
Other Special Districts0.05-0.20%Cemetery, library, water districts
Total Effective Rate1.0-1.3%Varies by Tax Rate Area (TRA)

Note: Final tax rates for FY 2025-2026 are set annually by local authorities and may vary from these estimates. Your specific tax rate depends on which combination of special districts serve your property location within Modoc County.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Modoc County, property taxes are due in two installments:

First Installment
Nov 1
Delinquent after Dec 10
Second Installment
Feb 1
Delinquent after Apr 10
Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Modoc County are triggered when the Assessor's Office reappraises your property due to a change in ownership or completion of new construction. When this occurs, you will receive a "Notice of Supplemental Assessment" by mail showing the new assessed value. If the new assessment is higher than the previous value, a supplemental tax bill will be issued to collect the additional taxes owed for the remainder of the current tax year.

The supplemental tax is calculated as the difference between the old and new assessed values, multiplied by your property's tax rate, prorated for the remaining months in the fiscal year. For example, if you purchase a home in January and the assessed value increases from $250,000 to $400,000, you would owe supplemental taxes on the $150,000 difference for the remaining 5 months of the fiscal year (February through June). At a 1.2% tax rate, this would equal approximately $750 in supplemental taxes ($150,000 × 1.2% × 5/12 months).

Example Calculation

The following examples show annual property tax calculations for three assessed values in Modoc County, assuming a 1.15% effective tax rate and standard homeowner exemption:

Example 1: $300,000 Home

  • Gross Assessed Value: $300,000
  • Less: Homeowner Exemption: -$7,000
  • Net Taxable Value: $293,000
  • Annual Tax (1.15%): $3,370
  • Monthly Escrow: $281

Example 2: $600,000 Home

  • Gross Assessed Value: $600,000
  • Less: Homeowner Exemption: -$7,000
  • Net Taxable Value: $593,000
  • Annual Tax (1.15%): $6,820
  • Monthly Escrow: $568

Example 3: $1,000,000 Home

  • Gross Assessed Value: $1,000,000
  • Less: Homeowner Exemption: -$7,000
  • Net Taxable Value: $993,000
  • Annual Tax (1.15%): $11,420
  • Monthly Escrow: $952

Note: The homeowner exemption requires annual application and saves approximately $70-80 per year. Additional exemptions for seniors, veterans, or disabled persons may apply but require separate applications with specific deadlines.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Modoc County require property tax escrow accounts to ensure timely payment of property taxes. Your lender collects monthly escrow payments equal to 1/12 of your estimated annual property tax bill, plus insurance premiums. These funds are held in a separate account and used to pay your property taxes when they become due on November 1st and February 1st each year.

Lenders typically conduct an annual escrow analysis to adjust your monthly payment based on actual tax bills and any changes in assessed value. If your property taxes increase due to reassessment or new special district taxes, your monthly escrow payment will be adjusted accordingly. Property owners should review their annual escrow statements carefully and contact their lender if they notice discrepancies. You can also verify that taxes were paid correctly by checking with the Modoc County Tax Collector's office or viewing your account online.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Modoc County for FY 2025-2026? A: The first installment is due November 1st and becomes delinquent after December 10th with a 10% penalty. The second installment is due February 1st with penalties applying after April 10th.

Q: What tax credits are available and do I need to apply? A: The primary tax benefit is the homeowner exemption, which reduces assessed value by $7,000. This requires annual application by December 10th and is NOT automatic. Additional exemptions may be available for seniors, veterans, and disabled persons, all requiring separate applications.

Q: How does the homeowner exemption work? A: The homeowner exemption reduces your assessed value by $7,000, saving approximately $70-80 annually in taxes. You must file an application by December 10th each year - it does not automatically renew.

Q: When are properties reassessed in Modoc County? A: Properties are reassessed to current market value upon change of ownership or completion of new construction. Otherwise, assessed values can only increase by a maximum of 2% annually under Proposition 13.

Q: What are the penalties for late payment? A: A 10% penalty applies to the first installment if not paid by December 10th. The second installment incurs penalties if not paid by April 10th, with additional penalties and potential tax lien consequences for continued delinquency.

Q: Can I pay my property taxes online? A: Contact the Modoc County Tax Collector's office to verify current online payment options and accepted payment methods for property tax bills.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the Modoc County Assessment Appeals Board within specific deadlines, typically by November 30th following the assessment. Contact the County Assessor's office for appeal forms and procedures.

Q: What is the Last Frontier Healthcare District assessment? A: Properties within this special district pay an additional $195 annual assessment approved by voters in 2010. This appears as a separate line item on tax bills for affected properties.

Q: Can I transfer my Proposition 13 tax basis to my children? A: Yes, under Proposition 19 (2020), you can transfer your primary residence or family farm to children without reassessment, subject to certain conditions and filing requirements. Contact the Assessor's office for transfer forms and eligibility requirements.

Q: What triggers a supplemental tax bill? A: Supplemental taxes are issued when property changes ownership or new construction is completed, resulting in a higher assessed value. You'll receive a Notice of Supplemental Assessment followed by a supplemental tax bill for the additional taxes owed.

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