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Additional Medicare Tax

Additional Medicare Tax paystub meaning: A 0.9% extra Medicare tax, with no employer match, that payroll must start withholding once your wages pass...

A 0.9% extra Medicare tax, with no employer match, that payroll must start withholding once your wages pass $200,000 in a calendar year.

The Additional Medicare Tax is a 0.9% tax on wages, Railroad Retirement (RRTA) compensation and self-employment income above a threshold. It sits on top of the ordinary 1.45% Medicare tax, so an employee's wages above the line are effectively taxed at 2.35% for Medicare. Two separate rules run at once, which is exactly why this line confuses people. Payroll follows one: an employer must begin withholding in the pay period in which your wages from that employer exceed $200,000 for the calendar year, without regard to your filing status or anything else you earn. Your tax return follows another: the tax itself applies above $200,000 for single, head of household and qualifying surviving spouse filers, $250,000 married filing jointly, and $125,000 married filing separately. Those two rules rarely produce the same number. A married couple earning $150,000 each sees nothing withheld all year yet clears the $250,000 joint threshold. One person holding two $150,000 jobs has the same gap, because each employer counts only its own wages. Someone earning $210,000 at one employer has it withheld even if a joint return leaves the household under $250,000. Form 8959 reconciles the two: the tax actually owed on one side, everything already withheld credited on the other, with any excess applied against the rest of the return like ordinary withholding. Two details surprise people. There is no employer match — your employer pays 1.45% on Medicare wages and nothing toward this 0.9%. And once your wages cross $200,000, the employer cannot honor a request to stop withholding it.

Tax entries on a pay statement depend on taxable wages, current employee elections, filing status, pay frequency, jurisdiction, and current agency instructions. Compare the current-period amount with year-to-date totals and the employer-issued record before treating it as final.

When this term appears on a statement, read its label, current amount, year-to-date amount, pay-period context, and any adjacent rate or hours together. Resolve a mismatch with the original issuer or the cited authority rather than changing a record to force a preferred result.

Example

Single filer, $10,000 gross per semimonthly period. Your previous stub showed $195,000 in year-to-date wages; this one takes you to $205,000. Regular Medicare: $10,000 x 1.45% = $145.00. Additional Medicare Tax applies only to the $5,000 that sits above $200,000: $5,000 x 0.9% = $45.00. This stub therefore shows two Medicare lines, $190.00 together. On every stub after it, the full $10,000 is above the line: $145.00 + $90.00 = $235.00, or 2.35% of gross.

Source: IRS Topic 560 — Additional Medicare Tax

Related terms

  • Medicare Tax — 1.45% of every dollar you earn, with no wage cap, plus a 0.9% surtax once your wages pass $200,000 in a calendar year.
  • FICA — The law behind two payroll taxes on your stub: 6.2% Social Security and 1.45% Medicare, deducted as you are paid and matched by your employer.