Effective Altruism Community Building Grants (CBG) is a grantmaking program supporting professional city and national effective altruism groups. The program was established in 2018 by the Groups team at the Centre for Effective Altruism (CEA).

CBG provides funding to a set of established EA groups. Historically, CEA also provided non-monetary support to grantees, including retreats, regular check-ins, coordination calls, a shared Slack space, and resources for running groups.

In 2026, CEA began transitioning evaluation of CBG grants to EA Funds, where the portfolio is expected to be managed alongside, but remain separate from, the EA Infrastructure Fund. CEA also phased out or transitioned most CBG-specific non-monetary support. Funding for existing CBG groups continues, but the portfolio remains closed to new applicants.