DavidD66
Expert Alumni

After you file

It sounds like you may have elected to enter your stock transactions as summary totals.  This requires that you mail a copy of your Form 1099-B showing each stock transaction to the IRS, along with Form 8453, which is used to identify the return the 1099-B goes with.  Just print the 8453 and a copy of your 1099-B, and mail to the IRS address indicated.

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