See the instructions in the TurboTax FAQ below to print a copy of the extension you filed using TurboTax Online.
https://ttlc.intuit.com/replies/4736887
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
