The National Atomic Testing Museum (NATM) is operated and maintained by its parent organization, The Nevada Test Site Historical Foundation (NTSHF), an IRS 501(c) 3 charitable, non-profit organization chartered in Nevada. The museum is an Affiliate Partner of the Smithsonian Institution. The museum is not financially supported by the U.S. Government, Smithsonian Institution or state funding.

General donations are applied to the areas of greatest need to the museum. Targeted donations are accepted via Sponsorship.