I have become aware of a case where an estate included a property which was undervalued at the time that probate was applied for. Probate was applied for 20 years ago. The property has now been sold, and it seems the value was too low.
the estate was covered by BPR / APR so no IHT was due.
The value was therefore not "ascertained". If we file an amended corrective retun, are we in time? What is the time limit for filing an amended IHT return?