As long as you transmit your return before midnight April 18, your return is considered timely filed even if it takes a few days to get accepted.
The Electronic Postmark is a timestamp of when your return was transmitted. Here's how to print out a hard copy for your records:
TurboTax Online
- Sign in to your TurboTax account
- Scroll down to select Your tax returns & documents
- Find your filing status history under view efile details on the right
- Capture a screenshot or print this page from your web browser
TurboTax CD/Download software
- Open your return in TurboTax
- In the File menu in the upper left corner, select Electronic Filing, then Show Electronic Filing Status History
- From here, you can print a copy