kgreen8393
Level 5
05-07-2021
12:30 AM
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If you have already used the 2020 software to E-File the 2020 calendar year tax return, then you can not e-file the short year 2021 return as it is also using the 2020 software. It is considered a duplicate filing as a return has already been filed under that EIN using 2020 software. You will need to paper file and add Form 8948 explaining why you are paper filing.