Answer: $1,458.90
Explanation:
As they are filing together, the first step would be to find out the taxable income after accounting for Ruth's loss.
Total taxable income = Otto's earnings - Ruth's loss
= 435,200 - 23,100
= $412,100
There is an additional 0.9% Medicare tax on the amount that people file that is above $250,000 when they file jointly and are married..
The additional Medicare will be:
= (412,100 - 250,000) * 0.9%
= $1,458.90