Did anything show up on the 2023 return about passing away and the date? Like at the very top of the 1040? Or just on the signature line at the bottom of page 2? It probably says Filing as surviving spouse?
Then you know for 2024 next year you still file a Joint return. Then at the very top of 1040 page 1, it should say DECEASED (NAME) 02/xx/2024. My husband died in 2023 last year but I had filed 2022 before he passed so nothing was noted on our 2022 return. For 2023 I filed Joint as normal saying he was Deceased and it put DECEASED 03/16/23 at the very top.
