Revenue and Incentive Effects of Basis Step-Up at Death: Lessons from the 2010 “Voluntary” Estate Tax Regime
研究了2010年美国遗产税临时废止期间，受益人因获得结转基础而非提升基础资产而产生的税收效应，发现非现金资产中未实现资本收益占公允市值的44%，且许多大额收益来自持有至少20年的资产。
In 2010, the U.S. estate tax expired and executors of wealthy decedents were not required to file estate tax returns. In the absence of the estate tax, beneficiaries received assets with carryover rather than stepped-up basis. Unrealized capital gains accounted for 44 percent of the fair market value of non-cash assets in estates that chose the carryover basis regime, and an even higher percentage for some asset categories. Many of the largest gains were on assets that had been held for at least two decades.