The cost basis resets, so say it goes from $100 to $110, the inheritor will only pay taxes on $10 of gains. But that doesn't prevent inheritance tax, which on

The cost basis resets, so say it goes from $100 to $110, the inheritor will only pay taxes on $10 of gains. But that doesn't prevent inheritance tax, which on a billion dollar fortune will exceed 50%. Even more if you die in places like NY or CA.