Her Contribution rises to $230/paycheck. Since she stays within a similar tax brackets, her tax savings are modest, meaning almost all of that extra $115 goes specifically into her retirement account as an alternative to remaining offset by tax cost savings. Bonuses are sometimes taxed in a flat supplemental level. https://alabama-federal-tax-calcu45012.wikilinksnews.com/7170173/the_definitive_guide_to_massachusetts_calculate_fica_taxes