My father passed away 3 years ago. When he passed, we filed a joint return for he and my mother and listed him as deceased. In January 2026, my mother passed away. She was retired and her only income was social security, my fathers pension and interest from bank accounts.
I know I need to file her 2025 return but do i need to apply for an EIN? I thought i only needed to file a 1040 EZ and list her as deceased.
Will I need to file for her for 2026? She passed in January 2026 and made less than $5000.