The Republican tax reform plans in Congress could reduce or end the estate tax. The House proposal would eliminate the tax, while the Senate version would reduce it. According to The Atlantic,
the estate tax will only bring in about $20 billion this year. While that adds up to about one-half of one percent of the total amount of revenue that goes to the US Treasury, it has a lot more to do with symbolism. Derek Thompson explains why in this article at The Atlantic.