OP's title: "How much can I sell without adding it to my income taxes?" So far, dnasilver has, in my opinion, posted the most accurate answer: It is unlikely that anybody on this forum knows who you, "jthole", really are, in real life, whether in Minnesota or Hawaii. I think you might look a little like Charlie Brown, but that's just a guess. We don't know you and we know even less about you. Nobody here knows how many dependent children you can deduct on your federal tax return.
Nobody here knows how many of those dependent children are wearing expensive corrective dental braces. Conversely, nobody here knows if you are a retired person whose income, other than Social Security and/or pensions, is still low enough that the IRS does not require you to file annual income tax returns. (I have heard one of my neighbors talking about being in that situation.)
Nobody here knows how much regular pay you get from your regular day-job or any other source of income.
Nobody here knows how much money you might have inherited from Great Aunt Gladys last year.
Nobody here knows how much passive income you receive from rents on the apartments you might own in New York City.
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