Updated September 5, 2026. Quick answer: New Mexico’s deferral is the narrowest in the family: it only postpones the portion of your tax bill caused by a valuation increase over 20% in one year, it charges no interest, and the statute names no lien at all. Everyone else in this list either defers the whole bill, charges interest, or both.
What New Mexico’s deferral requires, and why it is so narrow
NMSA 1978 §7-38-38.3 lets a claimant 70 or older, who owns and occupies the property as a principal residence and who qualifies for the maximum property-tax exemption under §7-2-5.2, defer only the increase caused by a valuation jump: the section applies only in a tax year when the property’s assessed value rose more than 20% from the prior year, and the deferred amount is the current year’s tax rate applied to that increase in valuation, not to the whole bill. No initial or additional deferral can push the total deferred above 20% of the property’s assessed value (§7-38-38.3(D)). Two or more qualifying owners of one residence must claim jointly, and all owners must agree.
No interest rate and no lien in the statute; a genuine outlier
Every other state in this family charges interest on the deferred balance, secured by a recorded lien, and several address that lien’s priority against a mortgage. New Mexico’s enabling sections, §§7-38-38.3 and 7-38-38.4, do neither: no interest rate appears anywhere in either section, and no lien, security interest, or mortgage-priority language is used at all. The only security is New Mexico’s ordinary ad valorem tax lien, which under the state’s general property-tax code (§7-38-48) already attaches to real property from January 1 of each tax year regardless of any deferral, so the deferred amount rides on that pre-existing lien rather than a deferral-specific one. That makes New Mexico cheaper to defer into than any other state here, and explains why it applies to such a narrow slice of the bill: without interest or an added lien, deferring the whole tax indefinitely would cost the county real money with no offsetting charge.
When it comes due, and how to apply
Deferred taxes fall due on November 10 of the year the triggering event happens (or April 10 of the following year if the event happens after August 1): the claimant stops occupying the residence as a principal residence or sells or otherwise disposes of it; the claimant dies, unless a surviving spouse or joint tenant who is themselves an eligible claimant elects to continue the deferral, in which case it runs until that person dies or moves out; or the county treasurer determines the deferral was erroneously granted (§7-38-38.3(C)). Application is filed with the county treasurer by June 1 of the tax year (§7-38-38.4(A)); the treasurer issues a certificate of deferral, and any portion of the deferred amount can be paid off early at any time before it comes due.
New Mexico’s broader senior property-tax picture, covering exemptions, freezes and circuit-breaker credits, not just the deferral: property tax breaks for seniors in New Mexico.
How every state’s programme compares: property tax relief for seniors by state. What a deferral means in general, and who it catches out: the property-tax deferral lien trap.
Statutory text read at each state’s own legislature, revisor, or revenue agency this session. General information, not tax or legal advice; rates, caps and thresholds change most years and a county or state agency retains the final say on your own application.