2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with De Baca County Assessor's Office.
Effective rate
no countywide 2026 effective rate was published; New Mexico rates vary by tax district.
Statement mailing
November 1, 2026 or earlier, under the New Mexico county-treasurer annual schedule; county-specific mailing practices may vary.
Payment deadline
For tax year 2026, New Mexico county treasurers mail property-tax bills on or before November 1, 2026; the first-half payment is due November 10, 2026 and avoids interest and penalty if paid by December 10, 2026; the second-half payment is due April 10, 2027 and avoids additional charges if paid by May 10, 2027.
Valuation protest
For tax year 2026, file a petition with the county assessor by the later of April 1, 2026, or 30 days after the 2026 Notice of Valuation is mailed. The petition may challenge value, classification, allocation, denial of an exemption, or a valuation limitation; New Mexico law does not provide a protest of the tax rate itself.
Critical payment warning
Do not assume a grace period.
The verified county record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.