In the Netherlands, the Box 2 income, which is the income from substantial shareholdings (Dutch: 'inkomsten uit aanmerkelijk belang'), less the personal allowance, is subject to a flat rate of 26.9% (2023).
See also the schedule Tax rates for individuals.
For non-residents which own a substantial shareholding in a Dutch corporation under certain conditions a lower rate can apply as a consequences of the application of tax treaties.