Ask what “Smithian economics” means and you will get a policy platform, not a scholar’s actual body of work, and no two answers will fully agree.
In policy debate, “Smithian economics” functions less as a description of a specific set of arguments than as an appeal to authority: invoking it signals that a position, deregulation, minimal state intervention, trust in market self-correction, carries the backing of economics’ founding father. That rhetorical move only works if the underlying reading is settled. It isn’t.
The popular version holds that Smith proved free markets, left alone, convert individual self-interest into collective prosperity more reliably than any planned alternative, and that regulation is therefore a drag on a system that functions best without it. This is the reading historians call “Chicago Smith”; see Adam Smith for how that construction was built in the mid-20th century, and it remains the dominant popular sense of the term today.
Historians of economic thought working from the primary texts describe a different figure. Iain McLean’s Adam Smith, Radical and Egalitarian (2006) argues Smith combined economic liberalism with a lively suspicion of concentrated economic power and a concern for distributive fairness that sits uneasily with laissez-faire orthodoxy. Emma Rothschild’s reading of the invisible hand passage treats it as closer to an aside than a foundational law. Neither account denies Smith valued markets and competition; both deny that he treated self-interest, on its own, without law, competition policy, and moral restraint, as sufficient to produce good outcomes. “Smithian economics” as popularly used elides that disagreement rather than resolving it.
The term’s usefulness in argument, in other words, depends on nobody checking which Smith is actually being cited.
Source: McLean, Iain, Adam Smith, Radical and Egalitarian: An Interpretation for the 21st Century, Edinburgh University Press, 2006. Rothschild, Emma, “Adam Smith and the Invisible Hand,” The American Economic Review, 84(2), 1994, pp. 319-322.