Inheritance tax

Hello,

My mother passed away six years ago.  She owned her home in a trust with the provision that her partner could continue to live in the home until his death.  Once he passed, the two children (myself and my brother) are to sell the home.  I have questions:

 

1) Will there be any inheritance tax owed when the home sells.

2) Are capital gains taxes an issue since there were six years between her passing and his.

 

Thanks in advance

Margaret Fairbairn