Your donations to CCI are not only tax-deductible, they also allow us to deepen our program to advance climate-beneficial agriculture. Checks made payable to “Carbon Cycle Institute” can be sent to us at:

Carbon Cycle Institute
245 Kentucky Street
Petaluma, CA 94952

Please email us if you would have any questions or want to explore other means of making a donation.

Thank you for your interest in supporting CCI. Please contact for other ways to contribute.

Carbon Cycle Institute is exempt from federal tax under section 501(c)(3) of the Internal Revenue Code. Donations are tax deductible to the extent allowed by law.