In that case, you'll need to use Form 1040X in order to amend your return formally. That might sound intimidating, but Form 1040X isn't as difficult to use as many taxpayers fear.

If you're claiming anything other than the standard deduction, you also need to file Form 8913, which you also can print out from the Web site. You'll still have to mail in the paper forms, however.

I live in Washington State. I filed my Form 1040, but there was a mistake on it. I have corrected my error on a Form 1040X. My question is where do I send my 1040X?

Question from Gordon March 16, 2005 at 10:44am Hi Kathy: I received corrected 1099-DIV from the broker. I prepared 1040X form to amend the return and to find the change. I came out about 12 ...