3657354 - PY-NL: Additional SI - WGA-Hiaat calculation basis with the 30% reduction

Regarding the application of the 30% regulation following the introduction of the Wet Uniformering Loonbegrip law in 2013, since this law came into effect, it is no longer permissible to apply the 30% regulation solely for tax purposes. When the 30% regulation is applied, it must be applied to both tax and social insurance (SI). This means that the 30% reduction in taxable wage also results in a corresponding reduction in the wage for SI and Zvw.
Whether this reduction also applies to additional SI depends on your insurance provider.
By default, SAP assumes that all additional SI providers adhere to the standard definition, which reduces the calculation basis by the 30% adjustment.

30% rule; SI additional; WGA , KBA , PY-NL , Netherlands , How To