The USAMTS is primarily funded by the National Security Agency (NSA), which has funded the program since 1992. Mathematicians at NSA also generously donate hundreds of hours to grade student submissions. The USAMTS would not be possible without the support of the National Security Agency.

The USAMTS has also received financial and logistical support from AoPS Incorporated.

Canada/USA Mathcamp has donated partial academic scholarships for top scoring USAMTS participants who earn admission to Mathcamp.

Wolfram Research has donated copies of its mathematics software Mathematica to offer as prizes. Time-limited versions of Mathematica for Students are available here.

If you would like to make a donation to support the USAMTS, please click here to visit the Art of Problem Solving Foundation web page to learn how. If your corporation or foundation would like to become a sponsor of the USAMTS, please contact Richard Rusczyk at usamts@usamts.org. The USAMTS is managed by the Art of Problem Solving Foundation, which a 501(c)3 non-profit organization.