Make a tax deductible donation via Mail

Please download our Mail Donation Instructions form.

Then mail to:

The Calyx Institute
Attn: Development
287 Spring Street
New York, NY 10013


The Calyx Institute is registered and files an annual report with the Charities Bureau in the office of the New York State Attorney General. A copy of the annual report may be obtained, upon request, from the Institute at the address set forth on the Institute's website under "Contact Info and Directions", or from the Charities Bureau, New York State Attorney General, 120 Broadway, 3rd Floor, New York, New York 10271. The Calyx Institute has been determined to be a public charity, which is exempt from taxation by the IRS under ยง501(c)(3) and such contributions will be tax deductible to the donor to the extent provided by law. Our tax ID number is 27-2800937. If you would like a copy of our IRS determination letter for your records, it is available on our website at the following address: https://www.calyxinstitute.org/sites/all/documents/Calyx-501c3-determination.pdf