New Mexico Statutes: Numbering, Citation, and Effective Dates

The New Mexico statutes are the permanent, codified laws enacted by the state legislature and signed by the governor, compiled by topic in a collection known as the New Mexico Statutes Annotated 1978 (NMSA 1978). The Compilation Commission publishes and maintains this collection, and anyone can read the full text for free at NMOneSource.com.1New Mexico Compilation Commission. About the New Mexico Compilation Commission The database also includes the state constitution, appellate court opinions, and court rules.

How the Statutes Are Numbered

Every section of New Mexico law has a three-part number that tells you exactly where it lives. Chapter, article, section. Chapter 66 is Motor Vehicles. Chapter 30 is Criminal Offenses.2Justia Law. New Mexico Statutes Chapter 66 – Motor Vehicles3Justia Law. New Mexico Statutes Chapter 30 – Criminal Offenses Chapter numbers stay tied to their subject over time, so Chapter 66 has meant Motor Vehicles for decades.

Within a chapter, articles group related topics. Chapter 66 alone contains thirteen articles, covering vehicle registration in Article 3, licensing in Article 5, traffic laws in Article 7, and crimes and penalties in Article 8.2Justia Law. New Mexico Statutes Chapter 66 – Motor Vehicles

Sections are where the enforceable text sits. When you see a citation written 66-8-102, that reads as Chapter 66, Article 8, Section 102, which is the state’s DWI statute.4Justia Law. New Mexico Code 66-8-102 – Driving Under the Influence of Intoxicating Liquor or Drugs Once you can decode the number, you can jump straight to the right page without paging through anything else.

Where to Read the Statutes

Online

NMOneSource.com is the official free portal, published by the Compilation Commission and recognized by New Mexico courts and the legislature.5New Mexico Compilation Commission. Search Laws – New Mexico Compilation Commission The annotated version on the portal is worth using over third-party reproductions because it includes references to court decisions interpreting each section and the legislative history for when a section was enacted or last amended. Outside sites sometimes lag behind recent amendments.

In Print

The Supreme Court Law Library in Santa Fe is open to the public and stocks the print NMSA 1978, with staff available in person, by phone, or by email.6Supreme Court of New Mexico. Supreme Court Law Library The University of New Mexico School of Law Library keeps both the current statutes and historical compilations going back to 1915.7University of New Mexico School of Law Library. New Mexico Legislative History Quick Guide – Prior Versions of New Mexico Statutes Print sets stay current through pocket parts, the pamphlet inserts tucked into the back cover of each hardbound volume that reflect changes from the most recent session.

When a New Statute Actually Takes Effect

The date a bill is signed is not usually the date the law starts operating. Under Article IV, Section 23 of the New Mexico Constitution, most new laws take effect 90 days after the legislature adjourns.8Justia Law. New Mexico Constitution Article IV Section 23 – Effective Date of Law Two exceptions exist. General appropriation laws take effect immediately on the governor’s approval. Any other bill can also take effect immediately if the legislature declares it necessary for public peace, health, or safety and passes it by a two-thirds vote in each chamber.

If you’re checking whether a recently signed law is in force, look for an emergency clause in the bill text or count 90 days from the session’s adjournment date. When both chambers pass a bill and the governor signs it, that text first appears as a session law, a chronological record of the year’s legislation, and the Compilation Commission then integrates it into the NMSA 1978 by topic.9University of New Mexico School of Law Library. New Mexico Legal Research Guide – Legislative Statutes A bill amending an existing section replaces the old text in place. A bill creating a new program may add a new article inside an existing chapter.

How to Cite a New Mexico Statute

New Mexico Rule of Appellate Procedure 23-112 sets the citation format for court filings. Use the designation “NMSA 1978,” the section number, and a parenthetical for the year the statute was enacted or most recently amended.10Supreme Court of New Mexico. Rule 23-112 NMRA The Inspection of Public Records Act, for example, is cited as NMSA 1978, Section 14-2-1 (2025).11Justia Law. New Mexico Code 14-2-1 – Right to Inspect Public Records

A few points that trip people up. The “1978” never changes; it names the compilation system itself, not the year the individual law was passed. The parenthetical at the end is the piece that tells the reader which version of the section you mean, so it should match the year of original enactment or the most recent relevant amendment. In running text, Rule 23-112 requires spelling out the word “Section.” The ยง symbol is reserved for citations that stand on their own or that come after the first reference in a document.10Supreme Court of New Mexico. Rule 23-112 NMRA

Statutes, Regulations, and Local Ordinances

Reading the statute alone is often not enough. Statutes set broad policy. The New Mexico Administrative Code (NMAC), written by executive-branch agencies under authority the legislature delegates to them, fills in the operational details.12New Mexico State Records Center and Archives. New Mexico Administrative Code (NMAC) Both carry the force of law. A regulation that goes beyond what the parent statute authorizes can be challenged and struck down, but a regulation that stays within the statute is binding.

A common pattern: the legislature passes a statute requiring certain businesses to obtain environmental permits, and the New Mexico Environment Department then adopts NMAC rules spelling out application forms, fees, timelines, and technical standards. To understand the full obligation, you read both together.

Local ordinances sit lower still. Counties and municipalities in New Mexico hold only the powers the legislature grants them, and a local law that conflicts with a state statute is preempted. If you find a city ordinance saying one thing and a state statute saying another, the statute controls.

How Courts Read Ambiguous Statutes

When the meaning of a section is disputed, New Mexico judges start with the plain language. If the text is clear, courts apply it as written and stop there. When the text is genuinely ambiguous, courts turn to legislative history, the problem the legislature was solving, and how the section fits within the larger statutory scheme. Committee reports, floor debates, and signing statements can all inform that reading.

This is where the annotated version of the statutes earns its name. Instead of reconstructing that interpretive history yourself, the annotations point you to the court decisions that have already parsed the section, along with the amendment history that shows how the text has shifted over time. Before you rely on a plain reading of any provision that matters to you, it is worth checking whether a New Mexico appellate court has already read it differently.