When Are Otero County Property Taxes Due in 2026?
Published 17 October 2026
Otero County property taxes are paid in two halves. Tax bills go out on or before November 1, the first half is due November 10, and it becomes delinquent if it is not paid by December 10. The second half is due April 10, 2027, and becomes delinquent after May 10, 2027.
If you bought your first home here this year, or you just PCSed to Holloman and bought off base, this is the season your first bill shows up. Here is what to expect.
When are Otero County property taxes due?
New Mexico sets the same property tax calendar for every county. These dates come from the New Mexico Taxation and Revenue Department Property Tax Division important dates calendar.
| What happens | Date | State law |
|---|---|---|
| County treasurers mail tax bills | On or before November 1 | Section 7-38-36 NMSA |
| First half due | November 10, 2026 (Tuesday) | Section 7-38-38 NMSA |
| First half delinquent if not paid by | December 10, 2026 (Thursday) | Section 7-38-49 NMSA |
| Second half due | April 10, 2027 | Section 7-38-38 NMSA |
| Second half delinquent if not paid by | May 10, 2027 | Section 7-38-49 NMSA |
The Property Tax Division calendar describes the delinquency date as the last day to pay without accruing interest, so paying by December 10 and May 10 is what matters most.
Where do I pay my Otero County property tax bill?
Bills are paid to the Otero County Treasurer's Office at 1104 N. White Sands Blvd., Suite A, in Alamogordo. The phone number is (575) 437-2030, and office hours are 8 a.m. to 4:30 p.m. You can look up your account on the Otero County Treasurer's online portal.
If you have not received your bill by mid-November, call the treasurer's office rather than waiting. A bill that never arrived still needs to be paid on time.
How is my property tax amount figured?
Your bill is based on the taxable value the Otero County Assessor sets for your property, multiplied by the tax rates for where you live. You can look up your property's assessed value on the Otero County Assessor's property search. If something looks wrong, the assessor's office is the place to ask.
Does my mortgage company pay my property taxes?
Often, yes. If your mortgage has an escrow account, your lender usually collects part of the tax with each monthly payment and pays the treasurer for you. Check your mortgage statement or escrow analysis to be sure, especially in your first year in the home.
If you paid off your home or your loan has no escrow, the bill is yours to pay directly.
What does this mean for buyers and sellers right now?
If you are buying or selling this fall, property taxes are usually prorated at closing, so each side pays for the part of the year they owned the home. Your closing statement will show how it was split. Ask your title company or me if you are not sure which half you are responsible for.
New to the area? My moving to Alamogordo guide and my post on on-base vs off-base housing at Holloman cover more of what to budget for. You can also see the latest numbers in my Otero County market report.
Frequently Asked Questions
When is the first half of Otero County property tax due?
The first half is due November 10, 2026. It becomes delinquent if it is not paid by December 10, 2026.
When is the second half of Otero County property tax due?
The second half is due April 10, 2027. It becomes delinquent if it is not paid by May 10, 2027.
When are Otero County property tax bills mailed?
County treasurers in New Mexico mail property tax bills on or before November 1. Call the treasurer's office if yours has not arrived by mid-November.
Where do I pay Otero County property taxes?
Pay the Otero County Treasurer's Office at 1104 N. White Sands Blvd., Suite A, in Alamogordo. The phone number is (575) 437-2030.
Does my mortgage lender pay my property taxes?
If your loan has an escrow account, your lender usually pays the bill for you. Check your mortgage statement to be sure.
Due dates come from the New Mexico Taxation and Revenue Department Property Tax Division calendar, and office details come from the Otero County Treasurer's website, checked 17 October 2026. This is general information, not tax or legal advice, so contact the Otero County Treasurer with questions about your own bill.