Sooooooo I have to amend. A W2 came in a little too late (last week) and I had already filed. So, I'm amending. I already filled out a new 1040 and I'm now on the 1040X. On the column for "Correct Amount" (lines 1-31) I'm assuming I just put the items from the corrected 1040 right? I ran into a snag on #11 where is says "Federal income tax withheld and excess social security and tier 1 RRTA tax withheld (if changing, see page 8 of instructions)" what do they mean if changing? I looked up page 8 and the amendments list 1040, 1040A, and 1040EZ. I was under the impression that on amendments you can ONLY use the 1040. If so, why tell you which lines are used on the A and EZ forms? My original income tax for '09 was filled out on a 1040A. Do I need to compute anything extra? It doesn't say to... On line 17 it says "Overpayment, if any, as shown on original return or as previously adjusted by the IRS (see page 9 of instructions)" is this where I put my original overpayment? (on my original 1040A it said I owed $25 to the IRS, and my new amendment says I should have gotten $80. SO I know I should be getting $105 back, including that overpayment that needs correcting) It was around there I gave up and came here to seek advise. Any takers?