Rate Breakdown

Property taxes in Yuma County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Yuma County

Every year the Yuma County Assessor’s Office determines the taxable value of each real‑property parcel. The assessor first establishes the fair market value (FMV) of the land and any improvements, then applies the state‑mandated assessment ratio—typically 100 % of FMV for residential property and 100 % for commercial and industrial land. Once the assessed value is set, the county multiplies it by the applicable millage rates (tax dollars per $1,000 of assessed value) to calculate the tax bill. Millage rates are set annually by the County Board of Supervisors, school districts, fire districts, and other special taxing entities. For example, a combined rate of 25 mills means a property assessed at $150,000 will owe $3,750 in taxes ($150,000 ÷ 1,000 × 25).

Available Exemptions

Arizona law provides several exemptions that can reduce the taxable portion of your property. Yuma County follows the state guidelines, and eligible owners should file the appropriate exemption forms with the Assessor’s Office.

• Homestead Exemption: Up to $5,000 of assessed value may be removed for a primary residence. The exemption is automatically applied when the owner occupies the property as their legal residence.
• Senior Citizen Exemption: Residents age 65 or older may claim an additional $5,000 exemption, provided they meet income‑eligibility requirements (typically household income below $30,000).
• Disability Exemption: Qualified disabled persons can receive a further $5,000 reduction. Proof of disability—such as a physician’s statement or SSI award—must be submitted.
• Veteran Exemptions: Disabled veterans may obtain a $5,000 exemption for each 10% of disability rating, up to a maximum of $25,000. Surviving spouses of deceased veterans who died in service may also qualify for a $5,000 exemption.

All exemptions are applied to the assessed value before the millage rate is applied, thereby lowering the final tax amount.

Payment Schedule & Deadlines

Yuma County property taxes are due in two installments. The first installment is payable from October 1 through December 31; the second installment is due from January 1 through March 31 of the following year. Property owners may choose to pay the full amount at any time, or split the bill between the two periods.

• Payment Methods: Checks or money orders mailed to the County Treasurer, electronic payments through the Arizona Department of Revenue’s e‑Pay portal, or in‑person at the Treasurer’s Office.
• Late Payments: If a payment is not received by the deadline, a 10 % penalty is assessed, plus interest calculated at the treasury’s statutory rate. Continued delinquency can result in tax liens and eventual foreclosure.

To avoid penalties, set up automatic electronic payments or mark the installment dates on your calendar.

Appealing Your Assessment

If you believe your property has been over‑assessed, Yuma County offers a structured appeals process.

• File a Petition: Submit a “Petition for Reconsideration” to the Assessor’s Office within 30 days of receiving the Notice of Assessment. Include supporting documentation such as recent sales of comparable properties, independent appraisals, or evidence of physical defects.
• Informal Review: The Assessor may voluntarily adjust the value after reviewing your evidence. This step does not require a formal hearing.
• Formal Hearing: If the informal review does not resolve the issue, the petition is forwarded to the Yuma County Board of Equalization. A public hearing is scheduled, and both you and the Assessor present arguments.
• Decision & Further Appeal: The Board issues a written decision within 30 days of the hearing. If you are still dissatisfied, you may appeal to the Arizona Tax Court within 30 days of the Board’s ruling.

Keeping detailed records and filing promptly are essential to a successful appeal.