Sufficientarianism

Core Idea

Sufficientarianism holds that what matters morally is not how equal a distribution is, but whether everyone has enough. Harry Frankfurt's 'doctrine of sufficiency' argues that equality per se has no intrinsic moral importance — the real concern is that people fall below a threshold of adequate resources, welfare, or capabilities. Above that threshold, inequalities are morally acceptable. This shifts the focus from comparative judgments (who has more or less) to absolute ones (does anyone lack what is needed for a decent life?). The central challenge for sufficientarians is specifying where the threshold lies and justifying why concern drops off above it.

How It's Best Learned

Read Frankfurt's 'Equality as a Moral Ideal' alongside critiques from egalitarians like Casal. Test the view against edge cases: if everyone is above the threshold but one person has a million times more than another, does that distribution raise no justice concerns at all? This pressure reveals where sufficientarianism's commitments diverge from egalitarianism.

Common Misconceptions

• Sufficientarianism does not claim inequalities above the threshold are good — only that they are not unjust in the way that deprivation below the threshold is.
• The threshold is not simply a poverty line — different sufficientarians set it at different levels, from basic needs to robust flourishing.
• Sufficientarianism is not incompatible with redistribution; it simply denies that the moral case for redistribution rests on equality as such.

Explainer

From your work on distributive justice, you know the main positions on how to evaluate distributions: utilitarianism (maximize total welfare), Rawlsian egalitarianism (maximize the position of the worst-off), and luck egalitarianism (eliminate unequal outcomes not traceable to genuine choice). Each of these is a comparative view — they evaluate distributions by looking at how people stand *relative to each other*. Sufficientarianism challenges whether comparative reasoning is the right frame at all.

Harry Frankfurt's central argument in "Equality as a Moral Ideal" (1987) is elegantly simple: what matters morally is not that people have the same, but that people have enough. The difference sounds subtle but the implications are significant. Suppose two societies: in A, everyone has $50,000 per year. In B, everyone has $100,000 per year except one person, who has $80,000. The egalitarian says A is more just (it's equal). Frankfurt says B is obviously better — everyone has more in absolute terms — and that the residual inequality in B raises no justice concern because everyone, including the worst-off person, has more than they need for a decent life. The relevant moral question is not "do they have the same?" but "do they have enough?"

The threshold is the core concept and the core problem. Frankfurt is deliberately vague about where exactly it lies, because it depends on empirical facts about what enables a good human life. Some sufficientarians set the threshold at basic biological needs; others (influenced by capabilities theory) set it at the conditions for full human flourishing — adequate education, political participation, meaningful relationships, physical security. The higher the threshold, the more demanding sufficientarianism becomes in practice, even if it differs from egalitarianism in principle. Paula Casal's critique identifies a further problem: most sufficientarian views have a "positive thesis" (priority for those below the threshold) but a weak "negative thesis" (indifference to inequalities above it). Casal argues the negative thesis is implausible — enormous inequalities above the threshold seem to matter even if everyone is comfortable.

The practical upshot is that sufficientarianism reframes the justification for redistribution. An egalitarian redistributes to reduce the gap between rich and poor as such. A sufficientarian redistributes to ensure no one falls below the threshold — and once everyone is above it, further redistribution requires a different justification. This matters for policy: sufficientarianism supports aggressive anti-poverty programs but gives no justice-based reason to tax billionaires if the poor are already well-provided for. Whether that conclusion is a feature or a bug depends on whether you find equality intrinsically important or only instrumentally so.