New Mexico TRD / AHO Income Tax Audit Protest

The situation

Robert, 52, is a software contractor who lived in Albuquerque for 10 years. In March 2023 he relocated to Austin, TX (no state income tax). He changed his driver's license, voter registration, and established a home in Austin. He continued doing contract work for his primary NM client through the end of 2023, which generated W-2 income with NM source.

In January 2026 TRD issued Robert a Notice of Assessment: NM Personal Income Tax Deficiency, Tax Year 2023, Assessment: $12,400 plus interest and penalties. Basis: TRD concludes taxpayer retained NM domicile through December 31, 2023 and is taxable as an NM resident on worldwide income.

TRD's position: Robert had ongoing NM business activity and his 2023 NM-source W-2 income indicated NM residency.

Robert has 90 days from January 2026 to protest this assessment with TRD's Protest Office.

(a) Domicile ≠ physical presence. NM taxes residents on worldwide income, but the test is domicile, the state where Robert intends to maintain his permanent home. Robert changed his NM driver's license to TX in March 2023, registered to vote in Travis County, TX in April 2023, and purchased a home in Austin in June 2023. The NM W-2 income is NM-source income, taxable by NM even to a nonresident, but it does NOT establish NM domicile. Robert is taxable as an NM nonresident on his NM-source W-2 income, not as an NM resident on worldwide income. This distinction reduces his NM tax liability dramatically.

(b) TRD must prove domicile. The AHO applies the NMSA factors for domicile: where the taxpayer's principal residence is located, where the taxpayer is registered to vote, where the taxpayer's family lives, and similar objective factors. Robert can document all of these pointing to Texas from March 2023.

(c) The NM protest is not the AHO hearing. The protest goes first to TRD's Protest Office (an informal review, TRD reviews its own assessment). If TRD denies the protest, Robert can then request an AHO hearing, before an independent hearing officer who is not TRD. The AHO is the genuinely independent adjudication body.

(d) NM tax attorneys quote $3,500–$8,000 for TRD residency dispute defense. The 90-day protest letter + AHO hearing request + NM domicile factor documentation is largely self-executable with the right NM-specific structure.

Who receives this

New Mexico taxpayers receiving TRD Notice of Assessment or Notice of Deficiency for NM personal or corporate income tax. Primary segments: (1) Former NM residents who relocated to another state (especially TX, AZ, CO) and now face TRD residency/domicile disputes for the transition year; (2) Self-employed individuals with NM-source income who face TRD deduction disallowances; (3) Business owners facing TRD federal conformity adjustments.

Why the agency will not advise you

TRD Protest Office cannot advise taxpayers on contesting TRD assessments. AHO provides hearing procedures but no taxpayer defense strategy. ezel.ai does not appear to have NM-specific income tax protest template (ezel covers TX, PA, OK, VA but not the NM AHO process). NM tax attorneys charge $250–$500/hour.

Key facts, with sources

• The New Mexico Administrative Hearings Office (AHO) is a separate agency from the New Mexico Taxation and Revenue Department (TRD), established to adjudicate tax protest hearings independently. When TRD issues an assessment, the taxpayer has 90 days from the assessment date to file a written protest with TRD's Protest Office. After the protest is filed, either party may request an AHO hearing no earlier than 60 days after the protest was filed (the 60-day period allows for pre-hearing negotiation and information exchange). The AHO hearing officer issues a written Decision & Order within 30 days of the hearing, including findings of fact, conclusions of law, and cited reasoning. Further appeal goes to the New Mexico Court of Appeals. AHO's independence from TRD means the hearing officer applies the Tax Administration Act (NMSA 1978, Chapter 7) to the facts without institutional loyalty to TRD. Source: Tax Protest Hearing Information — New Mexico Administrative Hearings Office (AHO) · FYI-400: Tax Audits and Protest Procedures — TRD New Mexico · Administrative Hearings Office — Taxation and Revenue New Mexico
• New Mexico income tax protest cases at the AHO typically involve: (1) Residency disputes, NM taxes residents on worldwide income; the key issue is domicile (NM vs. another state), which turns on evidence of intent (driver license, voter registration, property ownership, social connections); (2) Business deduction disallowances, TRD may disallow home office, vehicle use, or professional expense deductions; NM follows federal tax conformity with specific exceptions; (3) Federal-state conformity adjustments, certain IRC provisions are not adopted in NM (NM has its own treatment of depreciation, certain exclusions, and deferred compensation items); (4) Estimated tax penalty disputes, NM imposes penalties for underpayment of estimated tax; taxpayers can avoid these by meeting safe harbor thresholds based on prior-year liability. A significant source of NM protests involves individuals who relocated from NM to TX, AZ, or CO but TRD continues to assess NM income tax on post-move income based on NM source income allocations. Source: How to Respond to a New Mexico Tax Assessment Notice — GetTaxReliefNow · Protest Office — All NM Taxes, Taxation and Revenue New Mexico

When to bring in a professional

Self-serve responses fit routine cases: clear facts, amounts a business can absorb, and a deadline still ahead of you. Bring in a licensed professional when the amount at stake is large relative to their fee, the facts are genuinely disputed, criminal exposure is possible, or the deadline has already passed. A short paid consultation to sanity-check your plan is often worth it even when you handle the filing yourself.

All sources for this guide

1. Tax Protest Hearing Information — New Mexico Administrative Hearings Office (AHO)
2. FYI-400: Tax Audits and Protest Procedures — TRD New Mexico
3. Administrative Hearings Office — Taxation and Revenue New Mexico
4. How to Respond to a New Mexico Tax Assessment Notice — GetTaxReliefNow
5. Protest Office — All NM Taxes, Taxation and Revenue New Mexico