Mr. Kim is a U.S. citizen who has been stationed at his employer's Tokyo office for the last six years.

a. Compute Mr. Kim's AGI if his only income for the year was his $65,000 salary.

b. Compute Mr. Kim's AGI if his only income for the year was his $169,000 salary.

c. Under Japanese law, Mr. Kim is a permanent resident and must pay Japanese income tax on his salary. Assuming that the Japanese individual tax rates exceed the U.S. rates, will Mr. Kim owe U.S. tax on any portion of his salary?

Assume the taxable year is 2018.