Give With Your Heart, and Your Head.

The Greatest Need Fund

When I buy something, I read reviews. I want to know I’m making the best choice possible. The same is true for when I give. Donating isn’t just an act of kindness, it’s an investment in the world I want to see.

When I learned about the horrors of factory farming, I couldn’t look away. These sentient animals were no different from my dog, who I loved so much. That’s why I give through Animal Charity Evaluators. A donation to their Greatest Need Fund supports the greatest need for animals backed by evidence and guided by compassion.

Your heart’s already in the right place. Make sure your donation is too.

How does the Greatest Need Fund help animals?

The fund is dedicated to strategically aligning with the best interests for the most animals during quickly evolving and changing circumstances around the world. Supporting the area of greatest need at ACE allows your donation to go where it is truly needed, and where it is likely to have the greatest impact.

Why The Greatest Need Fund?

We Help the Animals That Need it Most

We work to help the animals who suffer to the greatest extent and in the largest numbers, but who are often ignored. Both wild and farmed animals are harmed in the largest numbers by humans compared to other animals, which is why we prioritize them in our work.

Experts You Can Trust

ACE builds on more than a decade of experience in assessing charities’ effectiveness. Our independent researchers are specialized in animal welfare issues and evidence-based solutions to ensure your donation helps animals as much as possible.

Donations Go to the Greated Need

The ACE team will determine fund distributions based on their expertise. Funds may support additional Movement Grants or be distributed to Recommended Charities. A maximum of 10% of the fund may be reserved for ACE’s operating costs, with the goal of maximizing support for effective animal advocacy.

Our Impact

$12M+

funding distributed to our Recommended Charities

$7

in Movement Grants awarded

10M+

animals helped

What People are Saying

Many people wanting to help animals ask me for advice about the organizations to which they should donate. My standard answer is to refer them to Animal Charity Evaluators. If we want to bring about the biggest reduction in animal suffering for each dollar we donate, the research ACE does is our best guide.

Peter Singer

Philosopher

I couldn’t ignore the pain animals endure every day — it felt urgent, and I wanted to help. But I also felt lost, unsure how someone like me could make a real difference. Then I discovered Animal Charity Evaluators. Their deep expertise in animal advocacy gave me hope and a clear path forward. I realized I don’t have to do everything — I can focus on what I do best: I became a financial markets trader. I am now earning more and directing resources to where they'll make the biggest difference.

Benjamin Metral-Boffod

Donor

It’s hard not to feel despair when faced with so much human-caused animal suffering. Fortunately, I’m in a position to donate a portion of my income to help reduce the worst forms of it. ACE gives me confidence that every dollar I give is used effectively in the fight for animal wellbeing, and that makes me feel a little better about my impact on this planet.

Jan-Willem van Bochove

Donor

Before ACE, no groups evaluated animal advocacy tactics or charities based on impact. I’m confident that their findings will optimize efforts to help animals.

William MacAskill

Philosopher

I support ACE because I believe in the enormous importance of understanding better how we can most effectively help animals.

Rupert McCallum

Other Giving Options

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The Recommended Charity Fund

Our Recommended Charities are excellent examples of organizations working effectively for animals, and we have the data to support this. By making a single donation to the Recommended Charity Fund, you can support all of ACE’s Recommended Charities and feel confident that you are maximizing the good you do for animals.

Learn more

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Movement Grants

The Movement Grants program is dedicated to building and strengthening the global animal advocacy movement through grants. It presents an opportunity for emerging or smaller initiatives to receive financial support, playing a critical role in expanding animal advocacy to more regions and species.

Learn more