Most people want to do some good in the world. They donate to causes that feel meaningful, volunteer when they can, or try to live in ways that align with their values. But a growing movement called effective altruism takes a different approach, starting with a question that sounds simple but turns out to be surprisingly difficult: what is actually the best way to help?
The Core Idea
Effective altruism is a philosophy and social movement built on the premise that doing good is not enough on its own. The goal is to do the most good possible, using evidence and reason to figure out where resources, time, and effort will have the greatest positive impact.
At its core, the movement treats altruism like an optimization problem. If some charities help 10 times more people per dollar than others, and you give to the less effective one out of habit or emotional connection, you are leaving enormous potential impact on the table. Effective altruists argue that this kind of tradeoff deserves serious attention.
The term itself was coined in 2011 when Giving What We Can and 80,000 Hours merged under the umbrella of the newly formed Centre for Effective Altruism at Oxford University. Since then, the movement has spread to tens of thousands of participants across more than 70 countries.
Where It Came From
The philosophical roots of effective altruism trace back to the Australian moral philosopher Peter Singer, whose 1972 essay “Famine, Affluence, and Morality” laid out the argument that wealthy people in developed countries have a moral obligation to help those in extreme poverty, and that geographical distance does not diminish that obligation. Singer later expanded these ideas in books including The Life You Can Save (2009) and The Most Good You Can Do (2015).
The movement was formalized largely through the work of William MacAskill, a Scottish philosopher who co-founded Giving What We Can in 2009 with fellow Oxford graduate student Toby Ord. The organization encourages members to pledge at least 10% of their income to the most effective charities. MacAskill also co-founded 80,000 Hours, a research organization that helps people figure out which career paths will allow them to do the most good over the course of their working lives.
MacAskill’s 2015 book Doing Good Better became one of the defining texts of the movement, arguing that applying data and scientific reasoning to charitable giving can make a dramatically larger difference than giving based on emotional appeal or brand recognition.
How It Works in Practice
Effective altruism encourages people to evaluate their giving across several dimensions. Is the cause large in scale? Is it neglected relative to its importance? And is it tractable, meaning that additional resources and effort can actually move the needle?
Using these filters, the movement has tended to prioritize a handful of cause areas: global health and poverty, animal welfare, pandemic preparedness, and reducing risks that could threaten humanity’s long-term future.
One of the most influential institutions to emerge from this movement is GiveWell, a nonprofit charity evaluator founded in 2007. GiveWell reviews hundreds of charities and publishes detailed analyses of which ones save the most lives per dollar donated. Its top charities have historically focused on global health interventions like distributing malaria-prevention bed nets through the Against Malaria Foundation or providing seasonal malaria treatments to children in sub-Saharan Africa. GiveWell estimates that it has guided more than $2.6 billion in donations and helped avert over 340,000 deaths through these recommendations.
Another concept central to the movement is “earning to give,” the idea that some people can do more good by pursuing high-income careers and donating a significant portion of their earnings than they could by working directly for a charity. A software engineer who donates $100,000 a year to highly effective causes may ultimately help more people than someone working full time for a nonprofit that struggles with funding.
80,000 Hours takes a similar evidence-based approach to career choice, helping people think through which paths are likely to have the greatest positive impact given their skills, circumstances, and interests.
The Books That Define the Movement
If you want to understand effective altruism more deeply, a few books are worth your time.
Doing Good Better by William MacAskill is probably the best starting point. It walks through the logic of effective giving in accessible terms, punctures common assumptions about charitable impact, and provides a practical framework for making better decisions about where to direct your giving.
The Most Good You Can Do by Peter Singer covers similar ground with more philosophical depth, grounding the movement’s arguments in ethics and exploring what it really means to live a fully ethical life.
MacAskill’s 2022 book What We Owe the Future extends these ideas toward what the movement calls longtermism, the argument that protecting the long-term future of humanity may be one of the most important things we can do, given how many people could exist in the centuries ahead.
Criticisms Worth Knowing
No movement this ambitious goes without criticism, and effective altruism has attracted plenty of it. Some critics argue that the movement’s emphasis on quantifiable impact leads it to neglect causes that are harder to measure but no less important, like systemic inequality or community-level change. Others argue that the focus on impartial global benefit can feel cold and philosophically extreme in ways that conflict with ordinary human intuitions about loyalty, relationships, and local responsibility.
The movement also faced serious reputational damage following the 2022 bankruptcy of the cryptocurrency exchange FTX and the fraud conviction of its founder Sam Bankman-Fried, who had been one of the largest donors to effective altruism causes. The episode raised hard questions about how the movement had handled scrutiny of one of its most prominent members and whether its ethical framework had been applied consistently.
What It Has to Do with Your Finances
You do not have to be a philosopher or donate half your income to engage with effective altruism’s ideas. The movement’s most useful contribution may simply be its insistence on asking “what actually works?” before opening your wallet.
If charitable giving is part of your financial plan, the same discipline you apply to investing, keeping expenses low, avoiding fees, and letting compounding do its work, can be applied to giving. Tools like GiveWell make it easier than ever to verify that the dollars you set aside for charity are doing something real.
The broader lesson is one that good financial thinking and good altruistic thinking share: good intentions are not enough. What matters is whether your resources are actually going where they will do the most good.
Winchell House 
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