This is not a client case, but rather a hypothetical question in relation to Cryptocurrency and the loss of a private key.
If a deceased individual held a valuable cryptocurrency portfolio on death, one of the challenges for the executors will be to locate the Private Key.
Without the Private Key the value cannot be realised and the cryptoassets are effectively worthless. In addition, the significant volatility of these assets could mean the Probate Value is significantly higher than the value when they reach the heir / are sold by the executors.
I am of the view cryptoassets would not benefit from the Fall in Value relief (generally for land and stocks / shares on a quoted stock exchange).
This could result in a potentially odd situation for an executor that cannot locate the Private Key. The probate value will be liable to IHT (without the Fall in Value Relief) and the personal representatives would need to submit a negligible value claim - meaning a more limited relief against future gains realised by the executors.
Perhaps an alternative filing position would be the probate value is zero (without the Private Key the cryptoassets have no value).
I would welcome other practitioners views.