If you chose to e-file your tax return, you do not need a printer as you do not have to mail in any forms.
You only need to print forms if you elect not to e-file. And if you do choose to file by mail, you will get an instruction page that lists everything you need to mail and the corresponding addresses.
There are a few situations that require to send in additional information even if you do e-file. In these rare instances, you will be prompted to mail in Form 8453 (click to view these exceptions) with the supporting documentation within 3 days of your return being accepted. These instructions will be included with your tax return if applicable.
