Multiply your impact

Give to both your favorite Jewish charity and a super-effective charity recommended by experts. We'll add to your donations.

About Tzedakah Multiplier

As Jews, we want to give tzedakah to support our community and the wonderful Jewish charities that help it thrive.
At the same time, we also want to have the greatest impact we can, giving to those most in need regardless of where they come from.
Tzedakah Multiplier allows us to have the best of both worlds, whilst adding more on top of our donations.
"Someone who saves a single life,
it is as if they saved the entire world."
~ Talmud

How it works

Search and select your favorite Jewish charity

This can be any charity that you care about.

Select a super-effective charity

You can choose from our list of expert recommendations.

Divide your donation between the two

At least 10% has to go to a super-effective charity.

We'll add 9% to 90% on top of your donations:

our crowdsourced matching pool adds a proportion on top, so the total is always greater than what you donate. Learn more here.

Why donate with Tzedakah Multiplier?

Effective

Our goal is to make charitable giving as effective as possible. We support charities that experts have identified as super effective.

Matching

We'll add a small donation on top of yours from our crowdsourced matching pool. The more you give to the super-effective charity, the higher the rate.

Secure

Your donations are processed by our trusted partner every.org — a non-profit hub for charitable giving. Your data privacy is ensured.

Verified

As a project based at Harvard University, Tzedakah Multiplier has been reviewed by the Harvard internal review board and data safety team.

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Media coverage

  • Market Watch logo

    “For Giving Tuesday, this Harvard-designed donation tool helps you maximize your impact”
    - Best New Ideas in Money

  • Bill&Melinda Gates Foundation logo

    Giving Multiplier is an award winner of the Reimagine Charitable Giving Challenge that honors “promising concepts in the digital giving space”

  • The Happiness Lab logo

    Why Giving Money to Others Makes us Happier by The Happiness Lab with Dr. Laurie Santos

  • Vox logo

    “I appreciate Giving Multipliers’s incrementalist approach to helping people make more effective charitable giving decisions.”

  • Los Angeles Times logo

    “The next time you’re ready to give, make two donations: one to a charity that speaks to your heart and one to a charity that’s expert-certified for extraordinary impact.”

  • The Globe And Mail logo

    “If even just a quarter of all donors applied this strategy, millions of lives would be saved and improved - without donors having to forsake the charities closest to their hearts.”

  • The Harvard Gazette logo

    “Giving Multiplier, an online platform that eases — and sweetens — donations to global health and development charities”

  • Harvard Magazine logo

    “The researchers were able to effect real-world changes in donors’ behavior by offering them the chance to give with their heads as well as their hearts.”

  • Mindscape logo

    Joshua Greene on Morality, Psychology, and Trolley Problems by Sean Carroll’s Mindscape Podcast

  • Passion Struck logo

    The Power of Altruism: How Effective Altruism is a Giving Multiplier by Passion Struck Podcast with John R. Miles

  • Nature & Nurture Podcast logo

    Moral Psychology & Pragmatism by The Nature & Nurture Podcast

  •  The Stanford Psychology Podcast logo

    Cooperation, Charity, and Effective Giving by The Stanford Psychology Podcast

  • Giving What We Can logo

    Moral Tribes: Bridging the gap between “us” and “them” by Giving What We Can

  • On Wisdom logo

    Morality Meets World by On Wisdom

  • Callie Crossley logo

    Under the Radar with Callie Crossley

  • Clearer Thinking logo

    Clearer Thinking with Spencer Greenberg

Websites we recommend

About Tzedakah Multiplier

Tzedakah Multiplier is a project of Effective Altruism for Jews, in partnership with Giving Multiplier. EA for Jews is a group of Jews of all different backgrounds excited about doing the most good we can. If you'd like to learn more, visit www.eaforjews.org.