You do NOT put a 2024 1099 on a 2025 tax return, if that is what you are asking about. The online software is only for 2025 income---no other year.
If you need to file a 2024 return, you can do that. Or you can amend your 2024 return to add a 1099 that you forgot to include last year. Which do you need to do?
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