The estate tax, applied to assets of someone when they die, represents a tiny portion of federal revenue. But for farms and businesses at risk of being caught by this death tax, the effects can be huge. If a business or farm is valuable enough to be ensnared by the estate tax, passing on this asset built and developed over a lifetime, or across generations, becomes extraordinarily difficult and costly, sometimes even impossible. But apparently the Internal Revenue Service does not think this situation is bad enough and has proposed new regulations which would make passing on a business to your children even more difficult.