Shortly after filing my 2018 1040 I received a 1099 that was was supposed to start 1/1/19 but was paid electronically on 12/31/18 so I now need to go back and amend my 1040 return. I have not filed my State taxes yet.
Do I file State based on what was on my 1040 or wait to complete the 1040X and file State off that data (I had zero return on State under 1040 but have a few dollars of refund coming under the 1040X)?.
