Question 1:

Kyle, a single taxpayer, worked as a free-lance software engineer for the first three months of 2017.During that time, he earned $62,000 of self-employment income.On April 1, 2017, Kyle took a job as a full-time software engineer with one of his former clients, Hoogle Inc. From April through the end of the year, Kyle earned $172,000 in salary.

What amount of FICA taxes (self-employment and employment related) does Kyle owe for the year?

Question 2:

This year Lloyd, a single taxpayer, estimates that his tax liability will be $13,600. Last year, his total tax liability was $17,400.

He estimates that his tax withholding from his employer will be $10,080.

How much does Lloyd need to increase his withholding by (for the year), in order to avoid the underpayment penalty?