2026 Form 8959 planning
2026 Additional Medicare Tax Calculator
Estimate the 0.9% Additional Medicare Tax across Medicare wages, self-employment income, RRTA compensation, and withholding.
Estimated tax
$315
Balance due
$0
Overwithheld
$0
Inputs
Calculation breakdown
Filing threshold
$200,000
Combined Medicare wages
$235,000
Wage excess
$35,000
Self-employment threshold after wages
$0
Self-employment excess
$0
RRTA excess
$0
Tax on wages
$315
Tax on self-employment income
$0
Tax on RRTA compensation
$0
Estimated employer withholding
$315
This estimate indicates Form 8959 may be relevant because income, withholding, or employer withholding exceeds a Form 8959 trigger.