Omar (single) is a 50 percent owner in Cougar LLC (taxed as a partnership). Omar works half time for Cougar and receives guaranteed payment of $50,000. Cougar LLC reported $450,000 of business income for the year (2023). Before considering his 50 percent business income allocation from Cougar and the self-employment tax deduction (if any), Omar's adjusted gross income is $210,000 (includes $50,000 guaranteed payment from Cougar and $180,000 salary from a different employer). Omar reports itemized deductions of $40,000. Answer the following questions for Omar. Note: Leave no answer blank. Enter zero if applicable. Round your intermediate calculations and final answers to the nearest whole dollar.

a. What is Omar's self-employment tax liability?

b. What would be Omar's self-employment tax liability if he didn't receive any salary?