I don't think anyone mentioned this but adding more income will increase your AGI and can affect your schedule A Itemized Deductions and affect or reduce any credits you qualified for like EIC, or increase a health penalty. Many other lines can change. More investment income can disqualify you from some credits.
Good answer by Turbo Tax Anita on adding new long term taxable income……..
When you enter one taxable transaction, you can't just watch the monitor. You increased your overall adjusted gross income and with that come many other changes in your return, not just the incremental tax on the one transaction.
