Property owners in Merced County pay a base property tax of 1% of their property’s assessed value, plus any voter-approved bonds and special district charges tied to the parcel. The Merced County Assessor sets the taxable value, and the Treasurer-Tax Collector handles billing and collection.1Merced County, CA. Treasurer – Tax Collector Secured bills come in two installments with hard delinquency dates of December 10 and April 10, and missing either one costs you a 10% penalty. Several exemptions and relief programs can lower what you owe or defer payment, but most require you to apply.
How Your Assessed Value Is Set
California’s Proposition 13 controls the value side of the equation. The Assessor starts with a “base year value” fixed at the time you bought the property or completed new construction, and that value can rise by no more than 2% per year for inflation, no matter what the market does.2California State Board of Equalization. California Property Tax An Overview A house bought in 1990 can sit on the roll today at a fraction of what it would sell for. When the property sells or new construction finishes, the base year value resets to current market value.
If the market drops below your assessed value, Proposition 8 (Revenue and Taxation Code Section 51) requires the Assessor to temporarily lower the taxable value to match. The Assessor is supposed to review these reductions each year without an appeal from you, though you can file one if it looks like the reduction wasn’t applied.3California Department of Tax and Fee Administration. Decline in Value – Proposition 8
What Makes Up Your Bill
The California Constitution caps the base ad valorem tax at 1% of full cash value.4Justia. California Constitution Article XIII A Section 1 – Tax Limitation That 1% is a floor. On top of it, your bill includes voter-approved bond debt for schools, community colleges, and municipal improvements, plus any special assessments or Mello-Roos Community Facilities District charges that apply where you live. Parcels in Los Banos or Atwater may carry obligations that unincorporated parcels do not, and the other way around. Two homes a mile apart with identical assessed values can have noticeably different bills. Your annual statement breaks out every charge by line.
When Secured Property Taxes Are Due
Secured property taxes are paid in two installments. The first is due November 1 and becomes delinquent at 5:00 p.m. on December 10. The second is due February 1 and becomes delinquent at 5:00 p.m. on April 10. A late first installment picks up a 10% penalty. A late second installment picks up the 10% penalty plus a $55 cost.5Merced County Treasurer/Tax Collector. Merced County – Secured Property Taxes On a $2,000 installment, that is $255 in penalties and costs for being one day late.
If you have a mortgage, your lender likely collects taxes through an impound account and pays the county for you. Confirm the payment posted. If the servicer misses the date, the penalties still land on your property.
Supplemental Bills After a Purchase
When a property changes hands or new construction finishes, the Assessor resets the base year value and issues a supplemental assessment covering the gap between the old and new taxable value. Supplemental bills come separately from the regular annual bill and are an additional charge, not a replacement.6Merced County, CA. Supplemental Assessments New owners often get caught off guard because the bills can arrive weeks or months after closing.
How to Pay
Merced County accepts payments online, by mail, and in person. The online portal takes e-check at no charge and credit cards for a 2.34% convenience fee with a $2 minimum.7Merced County, CA. How to Pay Your Taxes On a $3,000 installment, that credit card fee runs about $70, so e-check is cheaper if you want to pay electronically.
For mailed payments, the postmark date controls, not the date the county receives the envelope. A check postmarked December 10 or April 10 is timely. If the envelope has no legible postmark, the county uses the date it was received.8Merced County, CA. Avoid Penalties Certified mail or a metered stamp gives you a paper trail. In-person payments are accepted at the Merced County Administration Building during regular business hours.
Exemptions That Lower Your Bill
Homeowners’ Exemption
If the property is your primary residence, you can reduce its assessed value by $7,000. At the 1% base rate, that is roughly $70 a year before any additional levies. You apply through the Merced County Assessor’s office, and the exemption stays in place as long as the home is your primary residence. It does not apply to rentals, vacation homes, or homes under construction on the lien date.9California Legislative Information. California Revenue and Taxation Code 218
Disabled Veterans’ Exemption
Veterans who are blind, have lost the use of two or more limbs, or are totally disabled from a service-connected injury or disease qualify for a much larger exemption. There are two tiers for 2026:
- Basic exemption, available regardless of income, covering $180,671 of assessed value.
- Low-income exemption, for qualifying veterans with household income at or below $81,131, covering up to $271,009 of assessed value.
Both figures are adjusted annually for inflation.10California State Board of Equalization. Disabled Veterans Exemption Increases for 2026 Unmarried surviving spouses of qualifying veterans may also be eligible. Applications go to the Assessor with documentation such as a VA disability rating letter and proof of occupancy.
Welfare Exemption for Nonprofits
Nonprofits formed and operated exclusively for charitable, religious, hospital, or scientific purposes can apply for a welfare exemption on property they own and use for those purposes. Federal 501(c)(3) status alone is not enough; California has its own narrower requirements, including language in the governing documents that irrevocably dedicates assets to qualifying purposes.11California State Board of Equalization. Property Tax Welfare Exemption Business leagues, fraternal lodges, and literary societies generally do not qualify, even with federal tax-exempt status.
Family Transfers Under Proposition 19
Proposition 19, effective February 2021, tightened the rules for passing property between parents and children (or grandparents and grandchildren) without triggering a full reassessment. The transferred property must become the child’s primary residence within one year, and the child must file for the homeowners’ or disabled veterans’ exemption within that same year.12California Legislative Information. California Revenue and Taxation Code 63.2
Even when that is met, the exclusion has a value cap. The child inherits the parent’s assessed value only up to the parent’s taxable value plus an inflation-adjusted allowance. From February 16, 2025 through February 15, 2027, the allowance is $1,044,586.13California Board of Equalization. Proposition 19 Any market value above that gets added to the new taxable value. Family farms have a separate exclusion that does not require the child to live on the property, as long as the land stays in agricultural use.
An inherited home kept as a rental no longer qualifies for any exclusion, so the Assessor reassesses it at current market value. For a family that has held a Merced County property for decades, that can multiply the tax bill several times over. Work the numbers before the transfer is recorded, not after.
Postponement and Disaster Relief
California’s State Controller runs a Property Tax Postponement Program that lets eligible homeowners defer payment, with the state placing a lien on the home for the amount advanced. For the 2025–26 cycle, you must be a senior, blind, or disabled homeowner with household income of $55,181 or less and at least 40% equity. The application deadline for 2025–26 is February 10, 2026.14California State Controller. Property Tax Postponement Deferred taxes accrue interest and must be repaid when the home is sold or the owner dies.
If a wildfire, flood, earthquake, or similar disaster damages your property, you can ask the Assessor to temporarily reassess it to reflect the damaged condition. The loss must be at least $10,000 in current market value, and the claim must be filed within 12 months of the damage or within any longer deadline set by county ordinance.15California Department of Tax and Fee Administration. Disaster Relief Approved claims generate a prorated supplemental refund. When the property is rebuilt in a similar manner, it keeps its pre-disaster Proposition 13 base year value.
Appealing Your Assessed Value
If you think the Assessor has set your value too high, you can challenge it before the Merced County Assessment Appeals Board. The regular filing window runs from July 2 through November 30. If November 30 lands on a weekend or holiday, the deadline moves to the next business day. Each application costs a $30 non-refundable fee and covers one parcel; multiple properties mean separate filings and fees.16Merced County, CA. Assessment Appeals
Supplemental assessments get a shorter window: 60 days from the date the supplemental notice was mailed. Miss that, and you wait for the next regular filing period.
The Appeals Board hears evidence from you and the Assessor before setting a value. Recent comparable sales in the same area carry the most weight. Listing printouts, a professional appraisal, and documentation of defects that affect value all help. Simply disagreeing with the number, or pointing to a neighbor’s lower assessment without accounting for differences between the properties, rarely works. Call the Assessor’s office before filing; sometimes they resolve the issue informally.
What Happens If You Don’t Pay
Unpaid secured taxes keep accruing penalties after the April 10 delinquency date. Eventually the property is declared tax-defaulted, which becomes a recorded lien and part of the public record. You can redeem the property at any time during the redemption period by paying all delinquent taxes, penalties, costs, and a $15 redemption fee per parcel.17California Legislative Information. California Revenue and Taxation Code 4102 The longer you wait, the more the penalties compound.
If a residential property stays tax-defaulted for five years without redemption, the Tax Collector can sell it at public auction. For non-residential commercial property, the timeline is three years.18California Legislative Information. California Revenue and Taxation Code RTC 3691 Before a sale, the county must publish notice in a local newspaper at least three weeks in advance and notify the State Controller’s Office. Some auctions run through online platforms like Bid4Assets. Once the property sells, the former owner loses all rights to it. If you can’t pay in full, contact the Tax Collector’s office early rather than letting the bill go silent.