How do I know if I should apply the payroll tax credit to my pension with SPIN?
Anyone living in the Netherlands may apply payroll tax credits to their income. You determine to which income this discount is initially applied. It is generally recommended that you apply the discount to your highest income. But beware: with multiple incomes, the wage tax credit can cause you to have to pay additional taxes. You can read more information about this on the Tax Office's website: https://www.belastingdienst.nl/wps/wcm/connect/nl/werk-en-inkomen/content/loonheffingskorting-meerdere-inkomens