Report this as you last described - "The 1099-MISC form itself on box 3 indicated to place it on line 8 of schedule 1 with example language of "The amount shown may be payments received as the beneficiary of a deceased employee, prizes, awards, taxable damages, Indian gaming profits or other taxable income"."
It is not self-employment income (Schedule C).
It may be royalty income (Schedule E), but there is no reason for you, as the beneficiary, to get wrapped up in the TurboTax royalty income interviews. The IRS is going to tax this income the same way if you report it as "Other Common Income" (Line 8, Schedule 1).
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Type "other Income" in the search window (or in the Search Topic window for desktop versions)
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Click on "jump to other Income" (or "other income" in the Search Topic results)
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Enter the information from your Form 1099-MISC, and click on Continue
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Enter a description and click on Continue
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On the screen with "Does one of these uncommon situations apply?", indicate "None of these apply"
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Answer "No..." to "Did the [Description] involve work that's like your main job?"
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Answer "I got it in 2020" when asked "How often did you get income for [Description]?"
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Answer "No, it didn't involve an intent to earn money."
The amount will be reported on line 8 of Schedule 1 (Form 1040).
