Effective Altruism

What is EA?

Effective altruism is an ongoing project that aims to find the best ways to help others, using scientific evidence and careful reasoning, and to put those findings into practice.

It's both a research field, which works to identify the world's most pressing problems and the best solutions to them, and a practical movement of people who use that research to do good.

Introduction to effective altruism

Many people feel that trying to do as much good as possible is obvious. In practice, though, most people rarely stop to compare their options before acting. When someone donates or gets involved with a cause, it's usually because they happened to see or hear about a particular problem that moved them. Effective altruism takes this natural desire to do good one step further by asking: "Of every possible action I could take, which would have the greatest positive impact?"

Maybe. There are many ways to make a difference. Each of us could work on any number of important problems, pursue a range of career paths, and donate to various charities, and each of those could have a very different impact. If you haven't actively tried to pick the option with the largest positive impact, it's unlikely you landed on the most effective thing by chance. It's hard enough to choose the best option even when you dedicate real time to researching the possibilities. Whatever you're currently doing, you could probably do even more good if you compared a range of options using the best available evidence and careful reasoning, then chose the one likely to help the most.

Some causes are more effective than others

You might agree with the idea of trying to help others as effectively as possible, but think that some of the interventions, careers, or charities that effective altruism organizations recommend are not actually effective.

Ultimately, effective altruism is a way of thinking about how to have an impact, not a prescriptive list of recommendations. It's about following good arguments and evidence, so conclusions are always open to revision. Even within the movement, people disagree about the best approaches, and about which problems to prioritize. If you have thoughtful criticisms, people involved will likely take them seriously and benefit from your perspective.

Effective altruism also has a culture of actively inviting criticism of its own ideas, a practice sometimes called "red teaming," where people are encouraged to make the strongest case against current thinking. You can find this kind of critical work, and the discussions it generates, on the Effective Altruism Forum.

The difference between disagreeing about what's effective and disagreeing with effective altruism - Red teaming on the Effective Altruism Forum

Since effective altruism is about helping others as effectively as possible, people need a way to compare different kinds of good. Fields like global health have well-established tools, such as the Disability-Adjusted Life Year (DALY). A DALY captures both how severe a health condition is and how many people it affects, which lets you compare very different problems. Malaria, for example, may be less deadly than ebola, but it affects far more people. DALYs are the best-known example, but researchers use other approaches too, including ones that try to weigh benefits across very different groups, such as humans and animals.

But how do you compare the harm from malaria with the harm from factory farming? Or weigh helping people suffering now against reducing the risk of a future catastrophe like nuclear war? These are hard questions, and researchers are actively working to develop better tools for answering them.

Cause Areas

Effective altruism is a decentralized movement, and people involved in it work on a variety of problems they think will benefit most from their efforts. People often focus on the following broad categories called cause areas: global health and development, animal welfare, and global catastrophic risks like those from artificial intelligence. Different people reach different conclusions about what to focus on, and work across many areas, not just the ones above.

Some examples of effective altruism in practice

In a world home to billions of humans and trillions of other animals, there is no shortage of individuals in need of help. With limited time and money, no one can realistically work on every problem. A key idea of effective altruism is to use evidence and reasoning to figure out which problems are most important, neglected, and have the potential for real change.

Millions of people die each year from preventable or treatable illnesses. Hundreds of millions more live with illnesses stemming from extreme poverty. Global health and development is an important cause area that is also “tractable,” meaning there are solutions that could save or improve the lives of millions of people. The best interventions in this space are sometimes 100 times more cost-effective than average interventions.

In the United States alone, around 10 billion land animals are raised and killed for food each year, and worldwide the number tops 80 billion. Once fish, shrimp, and other farmed animals are counted, global estimates reach into the trillions. Most are kept on factory farms, where poor conditions frequently cause disease and suffering. Wild animals also experience unique threats to their wellbeing. Although cost-effective ways to help exist, animal welfare receives little funding relative to the scale of the problem.

Not everyone in effective altruism focuses on future generations. Some concentrate on current problems, others on the long-term future, and many work on both. Because far more people may live in the future than have ever lived so far, some hold that helping those future generations go well is among the most important things we can do, a view sometimes called “longtermism.” People working from this view try both to shape how the future unfolds and to make sure there is a future at all, by reducing global catastrophic risks that could cause widespread harm to people alive now and in generations to come. Such risks include pandemics, climate change, nuclear war, and potential threats from emerging technologies like artificial intelligence.

Effective altruism is less a fixed list of causes than a way of asking how to do the most good with what you have. You can apply that thinking to a cause you already care about, using evidence to find the approaches and organizations within it that help the most. Even within a single cause, some options do far more good than others. In global health, for example, the best charities are estimated to be around 100 times more cost-effective than the average one.

Taken seriously, though, these ideas can also broaden where you look. Weighing problems by how large, neglected, and solvable they are sometimes leads people to find that their time or money would go further on a different problem than the one they started with.

Common criticisms

No. Effective altruism is a movement centered around the question: “How can we do the most good with our time, money, and resources?” Donating to high-impact charities is one way to do that, but there are many other options, including using your career to work directly on important problems, doing research, shaping policy, or volunteering your time. In the early days of the movement, one practice that was sometimes overemphasized was "earning to give." Earning to give involves pursuing a high-paying job, such as management consulting, in order to donate larger amounts to high-impact charities. This was always just one option among many, and today, career advisors influenced by effective altruism tend to recommend a wide diversity of paths depending on a person's skills, opportunities, and personal fit.

Utilitarianism is a moral philosophy that, broadly, aims to maximize overall wellbeing. Effective altruism resonates with many utilitarians, but people involved in it draw on a wide range of ethical views, including virtue ethics, religiously grounded theories, and more. Many care about principles like equality and individual rights alongside wellbeing. Unlike some forms of utilitarianism, effective altruism does not take an "ends justify the means" approach, and doesn't condone violating people's rights even when doing so would lead to the best consequences.

Effective altruism isn't a moral theory, and it doesn't tell you what you're morally required to do. What people involved share isn't a single moral philosophy but a common question: what are the best ways to help others with the time and resources we have? Because of that, they often reach different conclusions about what matters most. The only ethical views that effective altruism requires are that helping others matters, and that, all else being equal, doing more good is better than doing less.

One common critique of effective altruism is that it is too focused on band-aid solutions, like direct life-saving health interventions, rather than on fixing the broader systems that cause major global issues. Many people in the movement do prefer to focus on scaling proven, cost-effective interventions, in part because their impact can be measured and compared against other options. Working to change entire systems is harder, and opinions are divided on whether particular changes would help or hurt, and whether they can be made without serious unintended consequences.

Even so, plenty of people and organizations influenced by effective altruism do work on systemic change, often through policy, research, and advocacy. Examples include efforts to reduce lead exposure by working with governments to regulate it, along with work on areas like immigration, land use, and economic policy. What's less common is work aimed at wholesale transformation, such as overturning capitalism, which is part of what some critics have in mind. Because effective altruism is a decentralized movement, views on systemic change vary widely, and they're likely to shift over time as new evidence emerges.

Effective altruism offers a way to think about resource allocation, not a fixed set of recommendations. It emphasizes updating your views and actions as circumstances change, including taking what others are doing into account. So if everyone did the same thing and never adjusted, that could cause problems, but adjusting to what others do is necessary for finding the best ways to help. For example, if animal welfare began receiving so much attention and funding that it was no longer neglected, additional resources there could do less good than they could elsewhere, and recommendations by charity evaluators would shift accordingly. In practice, though, many important problems remain neglected and underresourced, so we're a long way from that point. Taking evolving circumstances into account and updating on the best current evidence is part of how effective altruism works.

Effective altruism starts from a desire to help others, and then uses evidence and reason to make that help go as far as possible. In practice, that does sometimes mean doing the math, working out how many people a given amount of money could help, including people we'll never meet. But the calculation serves the compassion rather than replacing it. Many are moved by the scale of preventable suffering, whether that's people dying of malaria, animals on factory farms, or future risks that could harm billions. Most people drawn to effective altruism got involved precisely because they care deeply, and they see careful reasoning as the way to turn that care into real impact.

Effective altruism doesn't tell you how much to give or how far to go. That's entirely up to you. If you already want to help others, it offers ways to do that more effectively, but the amount of time, money, or energy you devote is your choice. Donating money or dedicating your career to high-impact work might sound like a sacrifice, but many people find it brings a real sense of purpose, and even happiness. Those involved in effective altruism often enjoy working alongside people around the world who share their commitment to helping others, and they still make time for their own interests and relationships. There's nothing valuable about sacrifice for its own sake, and you shouldn't neglect your own wellbeing to take part. The point is to help others, not to make yourself feel bad.

Many people agree we should try to make a difference, but feel we should give our time or money to people in our own communities. There's nothing wrong with helping people close to you. But often the chance to help people far away is much greater, especially if you live in a wealthy country, because the same amount of money can do a lot more good in low-income countries. For example, some of the charities GiveWell recommends can save a life for a few thousand dollars. Helping globally can mean doing far more good with what you give, not because the people near you matter less, but because your help simply stretches further elsewhere.

Charity and aid vary a lot. Some of it achieves remarkable outcomes, while a lot of other work turns out to be ineffective. In global health, the best charities are estimated to be around 100 times more effective than average ones. That gap is exactly why it's so important to find the best charities, and to use good judgment about which causes to support with your money and time. There are also many other ways to have a big impact beyond donating, including research, policy, advocacy, and social impact entrepreneurship.

No. Since effective altruism emphasizes cost-effectiveness, people sometimes mistakenly believe it implies that you should always support the cheapest intervention. But cost is only one factor. Effective altruism is, of course, concerned with effectiveness. Even if it were cheaper to distribute stickers than vaccines, giving a sticker to every child in the world would not prevent disease, so it would not be particularly cost-effective if your goal is to save lives. What matters is how much good each dollar actually does.

Some people feel that helping with the world's biggest problems is really the responsibility of the ultra-wealthy and their foundations, not ordinary individuals. Rather than settle who ought to be giving, effective altruism focuses on a more practical question: what good can you actually do with the time and resources you have?

Large foundations do give substantial grants, but individual donors matter too. In 2024, GiveWell alone received donations from more than 30,000 people. Individual giving isn't just a smaller version of what big funders do, it can support promising projects that large institutions overlook or won't fund for their own reasons. So while major foundations play a big role, they don't cover everything, and where individuals give can make a real difference. Ultimately, what matters most isn't who else is giving, but how much good your own additional contribution can do.

One worry is that if individuals stopped donating to the most effective charities, large funders would step in to fill the gap. In that case, an individual's donations might just free up money for those larger funders.

This is a difficult question to resolve. On the one hand, it's likely that, if individual donors didn't exist, larger donors would take up some of the slack. On the other hand, if money is freed up for large and effective philanthropic organizations, they can then fund other effective interventions, including those that are important but that individual donors would be less likely to support.

There are also some highly effective charities that can productively absorb a lot more funding than they currently receive. Donating to charities with a large funding gap is less likely to displace funding from other sources. The total funding needed to address the world's most pressing problems is far greater than even the largest foundations can cover. So even with billionaires giving at scale, there remains ample room for individual donations to make a real difference. And if you're skeptical about donating to charity, there are many other ways you could use the principles of effective altruism to make a difference, such as choosing which cause to work on.

Some worry that charities decide what people need without really listening to them, imposing outside ideas about what counts as help. It's a fair concern: if the people receiving support aren't understood or consulted, the help is less likely to work, which defeats the whole purpose.

Because effective altruism is decentralized, different organizations approach this in different ways. Some support GiveDirectly, which gives no-strings cash transfers to people in poverty and leaves it entirely up to them how to spend the money, rather than funding services a community may not actually want. Other charities provide services like vaccinations or nutrition, where the benefit is clear enough that recipients are very likely to value it, and better health, in turn, can help people improve their own circumstances in ways outsiders can't. In other cases, charities run evaluations and surveys to learn how recipients actually feel about the help they're getting; these aren't always reliable, but they're often the best available.

It gets harder still when those affected can't be consulted at all, as with animals or future generations. There, people do their best to research what they would plausibly want. Groups like Rethink Priorities and the Welfare Footprint Institute, for instance, study how much and how long different animals suffer under different conditions, work that helps advocates push for stronger welfare standards. In some cases, the answer is obvious: pigs clearly don't want to be permanently confined to 'gestation crates' in which they cannot turn around, and future generations won't want to inherit a planet on which humans cannot easily live.

This is a real risk worth taking seriously. Relying too heavily on what's measurable can mean favoring interventions with clean, quantifiable results while discounting important work that's harder to pin down. This is sometimes called measurability bias, or quantification bias. A related idea is the McNamara fallacy: the mistake of assuming that what can't be measured doesn't matter.

Many people and organizations in effective altruism are aware of this risk and work to counter it. If favoring the measurable really does lead you to overlook important work, then the right response is to correct for that, not lean into it. So measurement is best treated as one useful tool among many rather than the final word.

Measurement still matters, and effective altruism does value interventions backed by strong evidence, such as those tested through randomized controlled trials. But some of the most important areas are inherently harder to quantify. In these cases, people reason about expected value, weighing how large a potential harm or benefit could be against how likely it is, and using rough, back-of-the-envelope estimates when precise data isn't available.

In practice, people in the movement do work on problems that are difficult to measure. Efforts to reduce catastrophic risks are a clear example: you can't run a controlled trial on preventing a pandemic or a nuclear war, yet many people work on exactly these problems. Even without hard measurement data, a project can have a clear theory of change, a step-by-step account of how its work is meant to lead to real impact, which helps separate promising efforts from wishful thinking.

Many effective altruists agree the movement could be more diverse. Effective altruism first emerged among people in wealthier nations and at top universities, and surveys show it still skews wealthier, more educated, and more secular than the general population. But as the movement grows, it's drawing in people from many different backgrounds. The Centre for Effective Altruism has hosted conferences around the world, including in Nigeria, Taiwan, Turkey, Mexico, and India.

In terms of beliefs and practices, the movement is more varied than it might look. Some people are vegetarian, others aren't. Most are secular, but some are religious. Political views span a range too. And while many hold strong beliefs and values, there's a strong emphasis on building a community that's respectful of difference and open to criticism. What unites the effective altruism movement is a shared interest in helping others as much as possible.

No. Effective altruism is an ongoing project and global movement with no central authority or leadership. The effective altruism movement is a decentralized mix of student groups, professionals aiming to do good with their careers, philosophers and scientists researching how to have a positive impact, and nonprofits putting these ideas into action. Some see themselves as part of the movement, while others are simply inspired by its ideas without identifying with it. They all share some common principles about how to do more good, yet they often interpret those ideas differently and take different actions as a result. Effective altruism has a culture of inviting debate and criticism, and the movement generally welcomes anyone who is sincerely trying to do good more effectively.

Even though effective altruism has no central authority, there are some organizations that coordinate and support the effective altruism movement in various ways. One of these nonprofits is the Centre for Effective Altruism (CEA). It runs conferences and events, provides support to organizers of local groups, and builds community infrastructure like the Effective Altruism Forum. Some people drawn to effective altruism rarely or never participate in any of CEA’s programs, and that's fine: effective altruism has no membership or other participation requirements.

Impactful careers

A high-impact career involves using your job or income to help solve important problems where more people, funding, or research could make a significant difference.

Learn more about high-impact careers

No. People can have an impact by donating, volunteering, working in government, research, or joining other high-impact organizations. Effective altruism frameworks can help people figure out how to direct their time, energy, and resources whether you’re interested in contributing through your career or in other ways.

You may be able to transfer your existing skills to a high-impact organization. Many organizations working on important problems need professional skills, from software, policy, and research to operations, communications, fundraising, and product.

Career bootcamp (a free, four-day online program for professionals)
Impact Accelerator Program (a free, six-week virtual program for professionals)
One-on-one career advice across various cause areas
One-on-one advice focused on advancing the long-term future
A program for those interested in starting a charity

The Centre for Effective Altruism runs an opportunities board that gathers high-impact internships, jobs, and funding in one place. Other organizations in this space offer curated job boards focused on particular cause areas along with other useful career resources.

Centre for Effective Altruism opportunities board
80,000 Hours job board focused on problems related to the long-term future
Probably Good job board covering an array of important problems
Animal Advocacy Careers focused on animal welfare jobs

Yes. The Centre for Effective Altruism and other organizations offer several free online courses focused on high-impact work. These courses are tailored to your career stage, familiarity with relevant problems, and specific interests.

Four-day career bootcamp for mid-career professionals
Six-week Impact Accelerator Program for mid-career professionals
Animal advocacy career course
All courses

Effective giving

No. Effective altruism is an ongoing project and global movement focused on using evidence and reason to find the best ways of helping others, and putting them into practice. Donating to charity is not the only way to have a large impact. Some other ways people might get involved include pursuing an impact-focused career, volunteering, or advocacy.

Learn more about high-impact careers

How you spend your money is a personal decision. That said, even after taxes, some people may find they still have the capacity and the desire to help others. There are many problems that governments are neither well-positioned nor incentivized to solve. It is precisely these areas where philanthropy can have a big impact. For those who are interested, effective altruism offers a framework to help people figure out how to make sure their hard-earned money is used as effectively as possible.

Learn more about effective giving

You shouldn’t put yourself in a bad situation to donate. There are many different ways to help others. That said, you might be surprised to learn that an average earner in a high-income country is typically among the richest people in the world, often in the top 1-5%. With effective giving, even a modest donation can do a lot of good when it's directed to where it helps most.

Most of us do not have the time to research every problem in the world and identify the best solutions. Impact-focused research organizations and evaluators can help donors figure out which of the world's many important problems are most in need of support. GiveWell, for example, spends 70,000+ hours a year reviewing academic evidence to identify and direct funding to the top global health interventions that save or improve the most lives per dollar.

Yes. Even small donations can do a lot of good when they are directed to where they help most.

Frequent questions & honest objections

What's next?