What is the date after which we cannot e-file tax returns for 2018?

[kathi]

Cut off date for e-filing 2018 tax returns

[Just-Lisa-Now- · Accepted solution]

Individual 1040s closed on Nov 16th, Business returns Efiling is still open, but I couldnt seem to find a date that it would close.

[sjrcpa]

Lisa is correct for this year.

But the absolute last day for efiling 2018 returns will be November/December 2021.

[Cody]

The State return went thru, Why didn't Federal 

[Cody]

Don't understand then if the last date is Nov 2021 why it did not go thru 

[sjrcpa]

You must have received some sort of diagnostic.