Temporality is integral to entrepreneurial philanthropy, the pursuit by entrepreneurs on a not-for-profit basis of social objectives through the deployment of philanthropic resources in schemes for social betterment. However, this is not fully recognized. This paper explores how time-related theorizing can render entrepreneurial philanthropy more effective in addressing socioeconomic inequalities. It considers how a temporal lens may benefit philanthropists and philanthropy professionals alike, and elucidates the vital yet neglected role played by the latter. We propose a model of temporality in entrepreneurial philanthropy that explicates the time-related processes of repairing, propagating, and endowing, which together support the futureproofing of the philanthropic system. We extend theorizing on generativity, the purposeful pursuit of pro-social goals for future benefit, and show this to be co-constructed. By demonstrating that generativity can be elicited and nurtured, we identify an important means whereby pro-social endeavours may be amplified in time and space to realize intergenerational visions of positive social futures.