If you entered summary transactions of your capital gains and losses, you may have to mail in Form 8453 and Form 8949.
In general, you are supposed to list each stock transaction line by line on Form 8949. You can aggregate transactions for which:
- the basis was supplied to the IRS on Form 1099-B and
- there are no adjustments in box 1f or 1g, and
- Ordinary is not checked in box 2, and
- you aren't making adjustments to the basis or type of gain, and
- you aren't electing to defer income due to investment in a QOF.
If you do not have any summary transactions, or if all of your summary transactions meet the rules above, you don't need to mail in anything.
If you have at least one summary transaction that does not meet the requirements above, go ahead and mail in the paperwork as TurboTax is instructing.
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