Rio Dell, CA Property Tax Rate (FY 2025-26)
Rio Dell's property tax rate is 1.0540% for fiscal year 2025-26 in its primary tax rate area: the 1% Proposition 13 base plus 0.0540% in voter-approved bonds.
First-year property tax by purchase price
Under Proposition 13 the purchase price becomes the assessed value, so the first-year tax at the city rate is the price times 1.0540%. Fixed assessments come on top. Your true tax rate is the two together, the tax at the city rate plus fixed assessments, divided by the purchase price on a newly purchased home.
| Purchase price | Annual tax | Monthly |
|---|---|---|
| $500,000 | $5,270.00 | $439.17 |
| $750,000 | $7,905.00 | $658.75 |
| $1,000,000 | $10,540.00 | $878.33 |
| $1,500,000 | $15,810.00 | $1,317.50 |
| $2,000,000 | $21,080.00 | $1,756.67 |
Property tax calculator
Search for a city, then change the price, rate or fixed assessments to estimate a first-year bill. It uses the same math as Mortgage Blueprint's tax breakdown.
What this rate leaves out
- This is the rate for Rio Dell's primary tax rate area. Other tax rate areas in the same city can have a different rate.
- Mello-Roos (Community Facilities District) taxes, flat parcel taxes and fixed special assessments are not included. Check the property's tax bill.
- Buyers get a supplemental tax bill after purchase for the change in assessed value.
- Under Proposition 13, the assessed value can rise by at most 2% a year while you own the home.
Look up a tax bill
Look up your Humboldt County property tax bill on the Humboldt County Treasurer-Tax Collector site. Humboldt County property tax rates and due dates.
Loan limits
Rio Dell is in Humboldt County, where the 2026 conforming loan limit for a one-unit home is $832,750. Humboldt County loan limits.
Other cities in Humboldt County
Source
Rate from County of Humboldt Multi-Year Tax Rates 2025-26 (Tax Year 2025). All California city rates.