My Father passed away at the end of the year 2024. My parents have revocable Trust that they made together. The way the Trust was written is that if one person passes away the other one takes over and it is still revocable. My mother filed her final joint filing personal tax return indicating my father passed away.
My parents had a post tax brokerage account that was under the Trust. This account used my father's SSN to report to the IRS. This was not realized till recently. The brokerage company indicated that they cannot change the SSN that the IRS will be reported under even though the brokerage account was under the trust with equal rights to both of my parents. The account has only made income in dividends and interest of around $800 for 2025 until we were able to transfer it out to a brokerage account that was under my mother's SSN. This $800 will be reported to IRS under my father's SSN.
The question is how are we supposed to pay these taxes? Do we include the 1099 DIV and INT in my mother's personal tax return and put something like "in regards to decedent :full name, SSN#"? If this is how I can go about it, how am I supposed to indicate this using FreetaxUSA? Under the Payer name do I put the "IRD, name and SSN#"? I don't see anywhere else I can put this information.