Minimum income guarantee programs have been considered or proposed for decades (or even centuries), but support for such programs appears to have increased recently. Even so, there are still resistances and difficulties in its implementation. One of the difficulties concerns the definition of its value. It is generally argued that the value should be sufficient to “live reasonably and freely”,  but this does not lead to an objective figure. This article proposes a methodology to define the value of the minimum income, based on what we call intergenerational equity. This principle requires that current fiscal policy rules apply to all future generations. Following it, an estimate of “social equity” is arrived at, which can be converted into a dividend for each citizen. The idea also provides a way to assess the long-term effects of fiscal policies as an added benefit