Pennsylvania's inheritance tax prepayment is a payment made to the Commonwealth of Pennsylvania in advance of an individual’s death. This prepayment is used to cover the inheritance tax that must be paid to the Commonwealth upon the death of the individual. There are two types of Pennsylvania inheritance tax prepayment: accelerated payment and deferred payment. An accelerated payment is made at the time of death and must be paid in full before the estate is settled. A deferred payment is made at the time of death but can be paid in installments over five years. Both types of prepayment must be made in order to satisfy the Pennsylvania inheritance tax liability.