Residence nil rate band

21397astra

My father died in November 2016 and he left his home to me and my sisters.  The property was sold in May 2017, which I believe is after the introduction of the residence nil rate band.  Does this additional nil rate band amount apply from the date of sale (in which case I think we can use the nil rate band) or from the date of death (in which case I guess we can't).  Or have I got that all wrong?  Would appreciate your help.

Keep_pedalling

It applies from the date of death.