Where can I check what cumulative ytd amount has been applied of the wage tax reduction?
On the periodic pay slips you can only see the periodic amount of the wage tax reduction, but on report X12 'Wage tax card / annual income statement' you can see the amount that has been applied so far this year.
You can find this notification on the Annual income statement in Curacao and St. Maarten payrolls:
You can find this notification on the Annual income statements in Aruba payrolls:
You can find this report in Reports/Annual reports/X12 - Wage tax card / annual income statement