Overlooked in the brawl over expiring Bush-era tax rates is what will happen to the death tax. Without action in the lame duck Congress, the estate tax will rise from the dead on January 1 with a vengeance, the rate climbing back to 55% from zero this year. The exemption amount will revert to a miserly $1 million, unindexed for inflation, so more middle class taxpayers will get hit year after year.