Organizations eligible for DonationMatch include those recognized as tax-exempt by the IRS (U.S.) or as registered charities or “qualified donees” by the Canada Revenue Agency (Canada). This typically includes nonprofits such as charities, schools, government agencies, religious institutions, foundations, and professional organizations.
In the U.S., the most common type of eligible organization is a 501(c)(3) public charity, which receives an IRS determination letter that looks similar to this:

In Canada, registered charities and qualified donees can issue official donation receipts for contributions from individuals and businesses.
Learn more about how DonationMatch verifies organizations.