Maryland Application By Foreign Personal Representative To Set Inheritance Tax is a form used by a foreign personal representative (FPR) to set the inheritance tax due on the estate of a non-resident decedent. The application must be completed and filed with the Comptroller of Maryland within nine months of the decedent’s death. The FPR must provide information about the estate, including its assets, liabilities, and beneficiaries. The application must also include a copy of the decedent’s will or other document that names the FPR as the representative. There are two types of Maryland Application By Foreign Personal Representative To Set Inheritance Tax: the Form 504 and the Form 504A. Form 504 is used when the estate is valued at more than $50,000 and the decedent died after October 1, 2017. Form 504A is used when the estate is valued at $50,000 or less and the decedent died after October 1, 2017.