Giving What We Can (GWWC) is a community of effective givers. It offers essential support, a sense of community, and critical information and infrastructure to aid donors in maximising the impact of their charitable donations.

The organisation's research and resources, including recommended charities, are shaped by the evaluations conducted by their research team. GWWC is dedicated to fostering a community of effective givers through events, newsletters, and giving pledges. Additionally, it operates a donation platform to facilitate support for high-impact charities. By 2022, GWWC's community members had contributed over $300 million USD to effective organisations and more than 8,000 individuals across 90 countries had committed to donating a significant part of their income to effective charities.

According to their latest internal impact evaluation, from 2020 to 2022:
- GWWC generated an additional $62 million in value for highly effective charities.
- GWWC had a giving multiplier of 30x, meaning that for each $1 spent on its operations, it generated $30 of value to highly effective charities on average. -
- Each new GWWC Pledge generates >$20,000 of value for highly effective charities that would not have happened without GWWC.