I filed MFJ with my spouse, but now realize that it would have been better to file MFS. I realize that I need to fill out a 1040X and mail it in, and she will have to file her own 1040 and submit it online.
Does it matter what order we do it in? Because with her 1040, she'll owe money, and we'll have to submit payment online. With my 1040X, it could be weeks before I get my additional refund.
