Do your donations make a difference? Here's how to find out which charities have the most impact.

BOUREIMA HAMA/AFP // Getty Images The holiday season is a busy time for charities. Driven by the spirit of the season, tax incentives, and reflections on achievements and how to give back, estimates show nonprofits earn up to nearly a third of their revenue in December. When it comes to giving back, Americans are among the most generous people in the world. According to the Charities Aid Foundation, 3 in 5 (61%) Americans donated money to a charity in 2021, placing the country third on the World Giving Index for charitable giving, which ranks over 100 countries in terms of volunteering and monetary donations. In 2023, Americans gave a combined $557 billion to nonprofits, including recipients ranging from animal shelters to churches to universities, according to Giving USA’s 2024 annual report. However, not all charities are made equal. Some are much more efficient than others, while bureaucracy, overhead costs, and a lack of leadership can mitigate the impact of others. A lack of financial transparency, too, can make donors ill at ease, with recent charity scams promoting awareness about the importance of verifying charitable organizations. However, by one estimate, only about 1 in 3 people who donate money conduct research before giving, according to estimates from Charity Navigator, which helps donors evaluate charities. To ensure their donations are making an impact, Americans can do their homework by checking an organization’s IRS status, program spending, and fundraising efforts. While time-consuming, donors who have more of an analytical bent could consult a charity evaluator to ensure their money is being put to good use. Nonprofit Finder examined data from GiveWell to see what charities have the most impact and can make a difference for the causes that matter most. Some valuable causes