Williams Owned an Office Building (But Not the Land) That

Essay

Williams owned an office building (but not the land) that was destroyed by a fire. The building was insured and Williams has a $156,000 gain because his insurance recovery exceeded his adjusted basis for the building. Williams may replace the building. Williams had taken $145,000 of depreciation on the building, has no § 1231 lookback loss, has no other § 1231 transactions for the year, and has no Schedule D transactions for the year. What is the final nature of Jamison's gain for the year and what tax rate(s) apply to the gain if:
(a) He does reinvest the insurance proceeds?
(b) If he doesn't reinvest the insurance proceeds?