To zombi idejo, da znižanje davkov na najvišje dohodke vpliva na povečanje investicij in zaposlenosti ter pospešitev gospodarske rasti, smo večkrat razkrinkali kot povsem neutemljeno in je bila v empiričnih študijah vedno zavrnjena. Glejte denimo “Ti nesrečni davki“. Se pa ta zombi ideja vedno znova vrača z vsakim novim valom neokonzervativcev – donedavno v ZDA s Trumpom in zdaj s Trussovo v V. Britaniji. Zato še enkrat kratek povzetek najbolj kredibilnih empiričnih študij, ki sistematično zavračajo to “trickle down” hipotezo.
V resnici velja ravno obratno: znižanje davkov ali povečanje transferjev tistim z najnižjimi dohodki pospeši gospodarsko rast (ker ti sloji praktično ves dodatni dohodek takoj potrošijo, kar dvigne agregatno povpraševanje, medtem ko premožnejši ta dodatni dohodek večinoma prihranijo, kar je iz narodnogospodarskega vidika večinoma neproduktivno*).
The empirical evidence is just not there for the ‘trickle -down theory or the Laffer curve. Analysis published in 2012 by the Congressional Research Service found that reductions in top tax rates were not correlated with economic growth Instead they were much more associated with rising income inequality. A 2012 study by the Tax Justice Network indicates that wealth of the super-rich does not trickle down to improve the economy, but it instead tends to be amassed and sheltered in tax havens with a negative effect on the tax bases of the home economy. A 2015 paper by researchers for the International Monetary Fund argued that there was no trickle-down effect as the rich get richer: “[I]f the income share of the top 20 percent (the rich) increases, then GDP growth actually declines over the medium term, suggesting that the benefits do not trickle down. In contrast, an increase in the income share of the bottom 20 percent (the poor) is associated with higher GDP growth.”


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