Rate Breakdown

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

How Property Tax Works in Grant County

In Grant County, property taxes are determined by a calculation involving the property’s assessed value and the local tax rate, known as the millage rate. The Grant County Assessor is responsible for determining the "full value" of your property, which is then assessed at 33.33% of that market value to establish the Taxable Value. Once the taxable value is finalized, the County Treasurer applies the millage rate—the sum of tax rates from various local taxing entities, such as schools, municipal governments, and the county itself—to calculate your annual tax liability.

Available Exemptions

New Mexico offers several tax relief programs to reduce the financial burden on qualified property owners. These exemptions must be applied for through the County Assessor’s office and generally apply only to your primary residence:

• Head of Family Exemption: A reduction of $2,000 from the taxable value of your primary residence.
• Veterans’ Exemption: Qualified honorably discharged veterans or their surviving spouses may receive a reduction in taxable value. A "100% Disabled Veteran" exemption is also available, which may exempt the property from all property taxes.
• Senior Citizen or Disabled Person Valuation Freeze: If you are 65 or older or permanently disabled, and your modified gross income meets specific thresholds, you may freeze the valuation of your property at the current year’s level, protecting you from future valuation increases.

Payment Schedule & Deadlines

Property taxes in Grant County are billed annually and may be paid in two equal installments. The first half of the tax payment is due by November 10th and becomes delinquent if not paid by December 10th. The second half is due on April 10th of the following year and becomes delinquent if not paid by May 10th.

It is essential to adhere to these deadlines to avoid penalties and interest. If taxes remain unpaid after the delinquency dates, a penalty of 1% per month is applied, up to a maximum of 10%, along with an interest rate of 1% per month. Continued failure to pay can eventually result in the sale of the property through a public auction conducted by the state.

Appealing Your Assessment

If you believe the valuation of your property is incorrect, unfair, or does not reflect market conditions, you have the right to file a formal protest. You must file a Petition of Protest with the Grant County Assessor’s office within 30 days of the date on your Notice of Value. When filing your appeal, provide evidence to support your claim, such as recent appraisals, photographs of the property’s condition, or sales data for comparable homes in your neighborhood. After the protest is filed, you will be notified of a hearing date before the County Valuation Protests Board, where you can present your evidence to have your assessment reviewed.