Direct answer: In the United States, the federal SAFE Act requires mortgage loan originators (MLOs) to include their NMLS ID on advertising and other public communications. Many states also mandate displaying the NMLS ID in advertisements, along with the licensed company name and any required disclosures. If you need the exact rule text for your jurisdiction, I can pull the current statute or regulatory guidance and summarize the precise formatting and placement requirements. Notes on how this typically works:

• Federal baseline: NMLS ID must be disclosed on marketing materials and public-facing communications to allow consumers to verify licensure.
• Typical disclosures: Alongside the NMLS ID, ads usually require the company name, and, if applicable, disclosures about APR, loan terms, or other required Truth in Lending disclosures.
• State-specific nuances: Some states specify how the ID must be presented (e.g., “NMLS ID #” and/or including the NMLS Consumer Access web address) and may require retention of ad records or specific font size, placement, and duration of the display.

If you’d like, specify your state or the type of advertisement (website, social media, print, email signature), and I can provide the exact statutory or regulatory language and formatting guidance for that jurisdiction.