File Petition to Probate the Estate. Determine if you have a small or regular estate, as the forms and timelines differ for each.There are two types of accounts, an interim account and a final account. With an interim account, not all estate assets are distributed. All the money in the account is subject to federal estate tax and Maryland estate tax, just as if there were no powerofattorney. Begin the probate process. It is imperative that you weigh the pros and cons before opening a joint account with your child. In Maryland, minors cannot directly inherit property until they reach the age of 18. Any assets left to them will need to be held in either a trust. Payment of the Maryland estate tax is due nine (9) months after the decedent's date of death.