Why do I have to pay additional medicare Tax-$115.00 per turbo in Form 8959? Medicare Taxes were already withheld per W2s(3)total medicare wages $262,763.00?

[333turnbull]

Form 8959 has a maximum amount $250,000.for joint filers. What does this mean? difference $12763.00 is multiplied by .009 instead .0145? Why I'm now considered as self employed?

[Opus 17]

Everyone pays it on income over a certain level.  It's supposed to be paying for the Affordable Care Act.

https://www.irs.gov/taxtopics/tc560

[SelfPreparer1]

There are additional Medicare taxes for high earners.  Most employers do not withhold the full amount if you fall into the high earner category.   Please see IRS website https://www.irs.gov/businesses/small-businesses-self-employed/questions-and-answers-for-the-addition....

You do not need to be self-employed to owe this extra tax - it also applies to wages.

Quote from IRS website "Additional Medicare Tax went into effect in 2013 and applies to wages, compensation, and self-employment income above a threshold amount received in taxable years beginning after December 31, 2012."