Correcting a Tax Return

[Bart]

I filed a tax return electronically that I now realize was incorrect because business miles were overstated. Is it true that I can just file another 1040 before 4/15 instead of being forced to file a 1040X in a few months?

[michaelmars]

no you must amend

[kcjenkins]

Yes, actually you could file a new PAPER return, but honestly, given how easy it will be for the IRS to screw this up at their end, I would not do it. I'd go ahead and do a 1040X, because then they will automatically link the two, and they will still TREAT THE 1040X NUMBERS AS THE ACTUAL 'FILED ORIGINAL RETURN' in their records, if they process it before 4/15/10.