Rate Breakdown

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

How Property Tax Works in Valley County

Property taxes in Valley County, Idaho, are levied on real estate, personal property, and certain taxes on business activity. The county’s tax base is established by the county assessor’s office, which reviews all property holdings once a year. Assessment values are determined through a mix of market appraisals, comparable sales, and mechanical appraisal methods. Once values are set, the county applies the millage rates—tax rates expressed in mills (one mill equals one‑thousandth of a dollar)—to calculate the annual tax burden. In 2024 the general property tax millage rate for Valley County is 29.5 mills. This rate may be broken down into specific components such as school district, county, and special district levies. The county’s tax diaries publish the exact millage schedule, and taxpayers receive a detailed statement showing their assessed value, the rate applied, and the resulting tax.

Available Exemptions

Property owners in Valley County can reduce their tax liability through several exemptions that Idaho law allows. These include:

• Homestead Exemption – Lowers the assessed value of a primary residence by up to $50,000. To qualify, the property must be the owner’s domicile and the owner must file a homestead declaration before April 15 of the tax year.
• Senior Citizen Exemption – Provides a 50% reduction on the assessed value for homeowners who are 62 years or older, have a permanent Idaho address, and meet income thresholds. Applications must be filed by May 31.
• Disability Exemption – Offers a 50% reduction for individuals with a documented disability who receive a Social Security Disability Income (SSDI) or Supplemental Security Income (SSI). Documentation of disability status is required.
• Veteran Exemption – Grants a $15,000 reduction for Veterans who served honorably in the Armed Forces. The exemption can be claimed in conjunction with the homestead or senior citizen exemptions.

Applicants should submit all exemption paperwork to the Valley County Assessor’s Office by the statutory deadline to avoid missing any potential savings.

Payment Schedule & Deadlines

Valley County issues a single yearly tax statement to all property owners. The standard payment deadline is March 1. However, owners have the convenience of paying in two installments to ease cash flow:

• First Installment – Due February 1 and covers 50% of the full tax amount.
• Second Installment – Due April 1 and covers the remaining 50%.

Late payments incur a penalty of 1% per month on the outstanding balance, plus interest at the statutory rate. Continued delinquency may result in the county placing a tax lien on the property, eventually leading to a forced sale to satisfy unpaid taxes. The county offers a payment plan program for qualified homeowners who experience temporary financial hardship, which can spread payments over 12 or more months without penalty.

Appealing Your Assessment

If you believe your property’s assessed value is incorrect, Valley County provides a formal appeals process. A taxpayer may file a written appeal with the Assessor’s Office within 30 days of the assessment notice. The appeal should include:

• Evidence of the true market value (comparative sales data, recent appraisals, or expert testimony).
• A detailed explanation of any discrepancies in property characteristics (e.g., size, condition, improvements).
• Any required supporting documents, such as property tax exemption forms if applicable.

After review, the county will issue a written decision. If the taxpayer disagrees with the outcome, they may request a hearing before the Valley County Tax Review Board within 15 days of the decision letter. The board’s ruling is final. Maintaining accurate records and timely filings dramatically increases the likelihood of a favorable resolution.