accidentally said 1099B was summary of sales. after filing, needs form 8453 (and 8949/1099Bs?)

[buttterbat]

I accidentally said my 1099B was a summary of sales instead of individual stock sold (it is just individual). I filed and now form 8453 is requested. Is there a way to fix this? Do I need to still fill out and mail forms 8453 and 8949 (shouldn't the IRS have my 1099B so they can see that it was an error)? Thanks.

[eugenied]

Your safest bet is to send in an 1040X to amend the tax form you sent in. That will give you a thorough paper trail.

[buttterbat]

I looked at 1040x but it seems like it's just numbers. No numbers have changed, just that my 1099B was from sale of a single stock rather than a summary. Would I still need to send a 8453?

[CatinaT1]

Depending on the amount of gain or loss, there may be no difference in your tax liability when amending.

See this TurboTax FAQ for help with amending.