Nonprofit and Voluntary Sector Quarterly, Ahead of Print.
Trust is assumed to be important for charitable giving. However, disparate associations have been found, and recent theoretical approaches emphasize motives for giving that do not rely on trust. To resolve this tension, we conducted a systematic review of evidence generated between 1988 and 2020. A meta-analysis of 69 effect sizes from 42 studies sampling 81,604 people in 31 countries confirmed a positive association between trust and giving across diverse measures, r = .22. Meta-regressions showed that organizational (r = .35) and sectoral trust (r = .27) were more strongly associated with giving than were generalized (r = .11) or institutional trust (r = .14). The relationship was also stronger in non-western (vs Western) countries and in nonrepresentative (vs nationally representative) samples. All evidence was correlational, and few studies measured actual behavior. We discuss implications for theories of trust and for fundraising practice, and highlight critical gaps in evidence.