When you are subject to withholding tax, your employer deducts tax from your wages based on your latest withholding tax return.
You can request a withholding tax adjustment only for:
Challenge the salary taken into account, the scale or rate applied, and/or
Request that a child under 25 be taken into account if you are living in a common-law relationship (cohabitation or French civil partnership), and/or
Request that a child under 25 be taken into account if you are married and living in a common household or if the child is in joint custody (separation or divorce), and/or
Request that a child under 25 years of age receiving maintenance contributions or alimony be taken into account, regardless of your marital status, if you are responsible for the child receiving the contributions or alimony, and/or
Request that a child under 25 be taken into account if you are married and living in a common household or if the child is in joint custody (separation or divorce), and/or
Request that a child under 25 years of age receiving maintenance contributions or alimony be taken into account, regardless of your marital status, if you are responsible for the child receiving the contributions or alimony, and/or
Request the consideration of a child over 25 years of age, apprentice or student during the calendar year, and meeting the income and wealth conditions, and/or
Declare your spouse’s actual income if you are subject to scale C.