Despite a similar statutory tax rate for multinational corporations (MNCs) across many countries, the effective tax rate that MNCs actually pay differs greatly—as low as 1% of gross income in Luxembourg and as high as 67% in Norway. That's one conclusion of a study published in the open-access journal PLOS ONE by Javier Garcia-Bernardo of Utrecht University, the Netherlands, Petr Janský of Charles University, Czechia, and Thomas Tørsløv of Danmarks Nationalbank, Denmark.