Answer:
She is not subjected to additional medicare tax.
Explanation:
A taxpayer's tax base for computing a self-employed taxpayer's self-employment tax (i.e., net earnings from self employment) is the taxpayer's net business profit from schedule C multiplied by 92.35%
so, Alice's net earnings from self-employment is her net profit from schedule c of $150,000 × 92.35% = $138,525.
Alice will owe ($138,525 × 2.9%) $4018 for the Medicare components of FICA taxes and $15, 922 ($128,400 maximum amount × 12.4%) $15,0922.
Alice owes total self-employment tax of ($15, 922 + $4018) = $19,940. she is not subject to the additional Medicare tax because her net earnings from self-employment do not exceed $200,000.