An asset or other property that does not have to pass through the probate process in order to be transferred following the death of the owner. Most of the time, nonprobate property is jointly owned and ownership simply remains with the surviving owner.
An asset, such as one held in joint tenancy, that does not have to pass through probate in order to be transferred.
While probate property, such as a home or car held in the testator's name "is subject to the will provisions and to the probate jurisdiction of the local court," non-probate property will bypass local probate administration unaffected "by the existence (or nonexistence) of a valid last will" and testament.
The holding of probate versus non-probate property should not be guided by the desire to save taxes on property transfers.