Our research-based matching system motivates people to donate to highly effective charities at givingmultiplier.org.

Giving Multiplier is a Harvard University research project that matches donations to any charity of your choice and promotes the world's most effective charities.

To make a donation that gets matched, go to http://givingmultiplier.org. To become a matching funder, go to http://givingmultiplier.org/matching. (If you donate on this page here, your donation will also go into our matching system.)

Giving Multiplier

Movement of Americans working together to end gun violence and build safer communities.

Everytown is a movement of Americans working together to end gun violence and build safer communities.

Everytown for Gun Safety

Catalyzing resilient solutions, scaled to meet the climate challenge.

CATF is a nonprofit organization dedicated to reducing atmospheric pollution through research, advocacy, and private sector collaboration.

heather lanthorn

Giving Multiplier

Everytown for Gun Safety

Clean Air Task Force