Additional Medicare Tax Withholding 2024 Form. Above a certain amount of wages, additional medicate tax is withheld and due. — employers are required to withhold the additional medicare tax at a 0.9 percent rate on wages and other compensation paid to an employee in excess of.
— employees must report the extra tax by attaching form 8959, additional medicare tax, to their income tax return. — the additional medicare tax 2024 rate is 0.9%.