Siskiyou County property tax
6 days left Until this due date
Verified — Last verified . View source
Last day to pay without a penalty: .
Read the county’s exact wording
Set by law. Check the county’s payment time and method. Updated daily.
December 10 Property owners First installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m. or close of business day, whichever is later.
Not tax or legal advice; confirm with your county. Dates are shown as published by the source.
Installment timeline
2026–2027Due dates and filing windows, in one view.
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Today:
Assessment notice: not yet verified.
How to pay
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Late payments and penalties
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Unpaid first installments incur a 10% penalty; unpaid second installments incur a 10% penalty plus a $20 cost fee.
Officially published
A numerical example is unavailable without a verified single percentage and unit. Use the published rule or ask the county for a payoff amount.
Assessment appeals
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Exemptions
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Homeowners' Exemption
Who may qualify
Officially published
County offices
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Common questions
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When is property tax due in Siskiyou County?
First secured installment: November 1, 2026 (Set by law). Second secured installment: February 1, 2027 (Set by law).
Where can I pay Siskiyou County property tax?
Use the official payment portal: https://common1.mptsweb.com/mbc/siskiyou/tax/search. E-check, Debit card, Credit card
What is the late-payment penalty for Siskiyou County property tax?
Unpaid first installments incur a 10% penalty; unpaid second installments incur a 10% penalty plus a $20 cost fee.
Does Siskiyou County charge a fee to pay property tax online?
Sources
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Read the source quotations (18)
https://www.boe.ca.gov/proptaxes/calendar.htm
November 1 Property owners First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
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https://www.boe.ca.gov/proptaxes/calendar.htm
December 10 Property owners First installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m. or close of business day, whichever is later.
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https://www.boe.ca.gov/proptaxes/calendar.htm
February 1 Property owners Second installment real property taxes due and payable.
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https://www.boe.ca.gov/proptaxes/calendar.htm
April 10 Property owners Second installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m., or close of business day, whichever is later.
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/tax-payment-due-dates
When delinquent dates fall on a Saturday, Sunday, or a legal holiday, the hour of delinquency is 5:00 P.M. on the Next Business Day.
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https://www.boe.ca.gov/proptaxes/homeowners_exemption.htm
The California Constitution provides a $7,000 reduction in the taxable value for a qualifying owner-occupied home. The home must have been the principal place of residence of the owner on the lien date, January 1st.
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/penalties
If your first installment amount is unpaid after December 10, a 10% penalty is added to the first installment amount due. If your second installment amount is unpaid after April 10, a 10% penalty plus a $20.00 cost fee is added to the second installment amount due.
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/penalties
After June 30, a $15.00 redemption fee and penalty in the amount of 1-1/2% per month will be added to the unpaid taxes and penalties listed on the bill.
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/online-inquiry-and-payment
Siskiyou County Tax Inquiry and Tax Payments
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/online-inquiry-and-payment
$1.50 for E-checks, $3.95 for Debit Cards, 2.25% for Credit Cards (with a $2.00 minimum)
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/online-inquiry-and-payment
Jennifer Taylor, Treasurer-Tax Collector
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https://www.siskiyoucounty.gov/treasurer-taxcollector/page/online-inquiry-and-payment
530-842-8340
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https://www.siskiyoucounty.gov/assessor-recorder/page/assessment-appeals
Craig S. Kay, Assessor-Recorder
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https://www.siskiyoucounty.gov/assessor-recorder/page/assessment-appeals
Supplemental Assessment: No later than 60 days after the date on which the assessee was notified by Supplemental Assessment Notice Regular Assessment: July 2 through November 30
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https://www.siskiyoucounty.gov/assessor-recorder/page/assessment-appeals
Appeals are filed with the Clerk of Assessment Appeals Board, Clerk's Office.
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How we verified this page
Official sources, verification dates and corrections
County notes
Additional payment and filing conditions
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Property tax in Siskiyou County: county, state and US
Compare Census estimates and read the sampling notes
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Census ACS 2020–2024 estimates for owner-occupied homes. The median annual tax paid is a historical survey estimate, not a quote for this year’s bill.
| Area | Median annual tax paid | Median home value | Effective rate estimate |
|---|---|---|---|
| Siskiyou County | $1,973 | $309,500 | 0.64% |
| California | $5,124 | $734,700 | 0.70% |
| United States | $3,119 | $332,700 | 0.94% |
Siskiyou County’s effective-rate point estimate is 0.06 percentage points below California’s and 0.30 percentage points below the US estimate.
Effective rate = median annual real estate taxes paid (B25103) ÷ median owner-occupied home value (B25077). State and US figures use their own Census medians, not averages of counties. These ratios are not rates set by law or medians of individual tax rates. Differences are not tests of statistical significance. Bounded or missing estimates stay unavailable.
Census sources, quotations and sampling uncertainty
Siskiyou County
Annual taxes: $1,973 (90% margin of error: ±$88). Census table B25103_001E.
0500000US06093|1973|88|2353|120|1673|97
Home value: $309,500 (90% margin of error: ±$11,190). Census table B25077_001E.
0500000US06093|309500|11190
Estimated effective rate: 0.64%. Census source.
0500000US06093|1973|88|2353|120|1673|97
California
Annual taxes: $5,124 (90% margin of error: ±$17). Census table B25103_001E.
0400000US06|5124|17|5839|17|3825|19
Home value: $734,700 (90% margin of error: ±$1,307). Census table B25077_001E.
0400000US06|734700|1307
Estimated effective rate: 0.70%. Census source.
0400000US06|5124|17|5839|17|3825|19
United States
Annual taxes: $3,119 (90% margin of error: ±$4). Census table B25103_001E.
0100000US|3119|4|3489|4|2576|4
Home value: $332,700 (90% margin of error: ±$236). Census table B25077_001E.
0100000US|332700|236
Estimated effective rate: 0.94%. Census source.
0100000US|3119|4|3489|4|2576|4
Guides and related dates
Siskiyou County property tax calculator
Estimate your bill, check exemptions and compare counties
Tools: Siskiyou County, CA
Property tax calculator
Estimated annual property tax $1,973
$309,500 home value × 0.64% Census effective rate ≈ $1,973 per year. Uses the unrounded ratio; your actual bill may differ.
Estimate only. Not tax, legal or financial advice; confirm with your county.
Starts at the Census median for Siskiyou County, CA.
Math and official Census sources
$1,973 median annual tax ÷ $309,500 median home value = 0.64%. Census ACS 2020–2024; a historical survey ratio, not a parcel tax rate.
0500000US06093|309500|11190
Census source. Last verified 2026-10-24.
0500000US06093|1973|88|2353|120|1673|97
Census source. Last verified 2026-10-24.
Full Siskiyou County, CA calculator: exemptions, rates, dates and reminders
Prorated property tax calculator
Nearby counties and other due dates
Nearby counties
We haven’t verified a shared Census area for nearby county links.
Other counties in California due soon
Published payment dates in the next 60 days.
- Alameda County Due date:
- Amador County Due date:
- Butte County Due date:
- Calaveras County Due date:
Date sources and verification
Alameda County
Set by law. Verified October 24, 2026. Official date source
§ 2605 Rev. & Tax. Code … November 1 … Property owners … First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
Amador County
Set by law. Verified October 25, 2026. Official date source
§ 2605 Rev. & Tax. Code | November 1 | Property owners | First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
Butte County
Set by law. Verified October 24, 2026. Official date source
§ 2605 Rev. & Tax. Code November 1 Property owners First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
Calaveras County
Set by law. Verified October 25, 2026. Official date source
§ 2605 Rev. & Tax. Code | November 1 | Property owners | First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
Updated , from cited verification dates. Individual sources may have earlier checks.