Deadline for resubmitting or paper-filing a rejected federal return that was originally e-filed by the April 15 deadline if you did not file an extension is April 20, 2019. Please see the below TurboTax FAQ for more information on important Tax Year 2018 dates.
https://ttlc.intuit.com/replies/3302298
If you like to file an extension, please see the below FAQ for instructions:
https://ttlc.intuit.com/replies/3301811
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