Assumed-Name (DBA) Registration Requirements in New Mexico

At a glance

How New Mexico handles assumed and fictitious names

New Mexico does not provide an ordinary DBA-registration route for a sole proprietor, partnership, domestic corporation, or LLC simply because it uses a name different from its legal name. The only current "fictitious name" filing in the general business-corporation chapter is a narrow foreign-corporation qualification mechanism.

Under § 53-17-3(A)(3), a foreign corporation cannot receive authority under a name that is the same as or confusingly similar to a protected corporate, reserved, or registered name. Under § 53-17-3(B)(1), one possible cure is to file with the Secretary of State a board resolution adopting a fictitious name that is not confusingly similar. The Secretary's official form confirms the limited setting—it is a certified corporate resolution used because the corporation's true name "was turned down" while qualifying to do business in New Mexico.

This is not a general DBA certificate. For the ordinary business using a trade name, New Mexico sets no statewide DBA filing office, deadline, publication, fee, term, renewal, or nonfiling penalty. Separate entity formation, foreign qualification, tax registration, local licensing, and trademark rules remain outside this DBA filing question.

Timing and continued compliance for the narrow foreign-corporation route

Section 53-17-1 says a foreign corporation may not transact business in New Mexico until it has obtained a certificate of authority. The fictitious-name resolution, when needed as the chosen name-conflict cure, therefore travels with that qualification process before the corporation begins covered New Mexico business.

Neither § 53-17-3 nor the official resolution states a separate publication step, fictitious-name filing fee, expiration date, or renewal cycle. Section 53-17-4 does address a later name problem: if an authorized foreign corporation changes to a name under which authority would not be granted, its authority is suspended until it adopts an available name or otherwise complies.

What trips people up

• Section 53-5-1 is not a partnership fictitious-name law. Current § 53-5-1 says Chapter 53, Article 5 is the Corporate Reports Act. It does not require partners to file a county DBA certificate.
• The Secretary's form title is broader than its use. The linked "Application for Fictitious Name" is actually a certified resolution for a corporation whose true name was rejected during foreign qualification.
• The foreign-corporation filing is only one name-conflict option. Section 53-17-3(B) also allows written consent plus distinguishing words or a court decree establishing prior rights.
• No fixed term does not mean the name issue can be ignored. A later unavailable name change can suspend the foreign corporation's authority under § 53-17-4.

Common questions

Does a New Mexico sole proprietor file a DBA with the Secretary of State?

No general state DBA application exists for that purpose. The Secretary's fictitious-name form is limited to a corporation qualifying under a replacement name after its true name was rejected.

Must a partnership file under § 53-5-1?

No. Section 53-5-1 is the short-title section of the Corporate Reports Act, not a fictitious-name certificate statute.

Does the foreign-corporation resolution require newspaper publication?

No. Section 53-17-3 and the official resolution contain no publication step.

Does the narrow filing reserve the name forever?

The statute requires the chosen fictitious name not to be confusingly similar to protected names, but it states no fixed registration term or general trademark-style ownership grant.

Statutes and sources

• NMSA 1978 § 53-5-1 — Chapter 53, Article 5 is the Corporate Reports Act, not a partnership DBA statute. Official NMOneSource Chapter 53 (accessed 2026-07-25).
• NMSA 1978 §§ 53-17-1 and 53-17-3 — foreign-corporation authority timing, name-conflict rule, and the narrow fictitious-name resolution option. Official NMOneSource Chapter 53 (accessed 2026-07-25).
• NMSA 1978 § 53-17-4 — suspension after an authorized foreign corporation changes to an unavailable name. Official NMOneSource Chapter 53 (accessed 2026-07-25).
• New Mexico Secretary of State, Certified Copy of Resolution—Corporation Adopting a Fictitious Name for Use in New Mexico — official form confirming the foreign-corporation qualification context. Official form (accessed 2026-07-25).