NEW! Offset monthly »

Completely Customize Your COTAP Carbon Offset Donation

US$ 9.90 per tonne | 90.9% goes to projects | 100% U.S. tax-deductible

Choose precisely how many of your tonnes are allocated to each project.

Instructions: Choose your first desired project, enter your desired number of tonnes, and then click “Donate” to add it to your PayPal shopping cart. To add tonnes for another project: While still on the PayPal cart page, click the “Continue Shopping” option to save your cart and return to this page. Repeat as needed!

Carbon Footprint Calculator (U.S.)


Offsetting by Check


Make your check payable to Carbon Offsets To Alleviate Poverty (COTAP) and mail to:

Carbon Offsets To Alleviate Poverty (COTAP)
3857 Lakeshore Avenue
Oakland, CA  94610  U.S.A.

In the memo section of your check, specify which project(s) you’d like your tonnes allocated to. Otherwise, tonnes will be allocated evenly to all projects.

To receive an emailed donation acknowledgement letter instead of a mailed one, please be sure to include your email address.

Where Your Money Goes


You will receive a detailed offset acknowledgement like this one. Your tonnes will be included in our public carbon credit retirements on the Markit Environmental Registry like this. You can track COTAP’s progress and download projects’ annual reports, which contain detailed accounting of payments to communities, in our Transparency section.