'"[6] On December 4, 2014, the Calyx Institute received its 501(c)(3) determination letter from the IRS, giving it the status of "public charity" and making donations to it tax deductible to the extent allowed by law.
[9] The Institute also has an advisory board, which as of January 2022[update] consists of Enrique Piracés, Isabela Bagueros, Jonathan Askin, Matt Mitchell, Sandra Ordoñez, and Sascha Meinrath.
DuckDuckGo donated $2,500 in 2017 to support Calyx's mission,[12] and the following year selected it as a participating organization in its Privacy Challenge crowdfunding campaign, through which it raised over $18,000.
[32] Since 2013, the Calyx Institute has been cited as an example of Internet users' being interested in protecting their privacy and related to Merrill's successful challenge of a national security letter.
[36][37] In a 2021 review of CalyxVPN, TechRadar called Calyx Institute a "long established non-profit" and said it was unusual in being "powered by donations" without ads and using open-source software.