Rate Breakdown

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

How Property Tax Works in Jerome County

In Jerome County, property taxes are determined by an annual appraisal performed by the County Assessor’s Office. The assessor evaluates each parcel based on market value, taking into account recent sales, property improvements, and local zoning. Once the market value is established, the county applies the applicable millage rates—expressed as a number of mills (thousandths of a dollar per dollar of assessed value)—to calculate the annual tax bill. The county’s total effective millage rate is the sum of the rates set by the educational district, the county itself, and any special service districts such as fire protection or water companies. For most homeowners, the combined millage rate in Jerome County falls between 20 and 30 mills, but it can fluctuate annually based on budgetary needs. Property owners receive a written assessment statement that details the assessed value and the millage rates used, allowing them to verify that the calculation is accurate.

Available Exemptions

Jerome County offers several exemptions that can reduce the taxable base for qualified residents. Each exemption requires separate documentation and is applied by the Assessor’s Office before the final bill is issued.

• Homestead Exemption: A standard deduction of up to $20,000 is applied to the assessed value of the primary residence, effectively lowering the tax owed.
• Senior Citizen Exemption: Homeowners aged 65 and older can receive a further reduction of up to $1,750 on the taxable amount, provided they meet income thresholds.
• Disability Exemption: Those who are legally recognized as totally and permanently disabled may qualify for up to a $5,000 deduction, contingent on proof from a licensed medical professional or a state disability agency.
• Veteran Exemption: Veterans, especially disabled or honorably discharged individuals, may receive a $1,500 exemption on their property value when they provide a valid DD‑214 or other proof of service.

To apply, homeowners should submit the appropriate exemption forms and required documentation to the Jerome County Assessor’s Office at least one month before the assessment year ends.

Payment Schedule & Deadlines

Jerome County provides multiple payment options to accommodate homeowners’ preferences. The full annual tax bill is due on the anniversary of the property’s tax year, typically mid-December. However, county law allows the bill to be divided into two equal installments to ease the financial burden.

• First Installment: Due by mid‑June. Paying on time avoids a 5% late fee.
• Second Installment: Due by late‑December. Late payment after this date incurs a 10% penalty.

Payments can be made online through the county’s e‑payment portal, by mail, or in person at the Assessor’s Office. If a homeowner fails to pay any installment by its deadline, the county will issue a delinquency notice, and a 5% annual late charge will accrue from the due date until the full balance is paid. Continued non‑payment may result in a tax lien, which can be satisfied by paying the principal, plus interest and penalties. Homeowners who anticipate difficulty meeting deadlines should contact the Assessor’s Office to discuss payment arrangements or to apply for a deferral.

Appealing Your Assessment

Homeowners who believe their assessed value is too high have the right to file an appeal with the Jerome County Assessment Appeals Board. The process is straightforward and designed to be accessible to all residents.

• Step 1 – Notice of Appeal: Submit a written notice, within 30 days of receiving the official assessment statement, to the Assessor’s Office. Include a brief statement of the grounds for appeal, such as recent comparable sales that suggest a lower market value.
• Step 2 – Gather Evidence: Collect supporting documents—sales records, appraisals, photographs of property conditions, or other evidence that substantiates your claim.
• Step 3 – Hearing Request: File a formal request for a hearing with the Board. The Board will schedule a date, typically within 45 days of the request.
• Step 4 – Attend the Hearing: Present your case, review evidence, and answer questions from the Board. An attorney may appear if desired, though legal representation is not required.
• Step 5 – Board Decision: Within 30 days of the hearing, the Board issues a written decision. If the appeal is denied, the homeowner may request a reconsideration or pursue further legal action, such as filing a petition with the Idaho State Tax Board.

Timely filing and thorough documentation are key to a successful appeal. For guidance, homeowners should consult the Jerome County website or contact the Assessor’s Office directly.