How can i save a pdf to my computer before i file? i need to print and mail the copy

After you've filed, it's a good idea to save your return as a PDF (Portable Document Format), which can be viewed or printed using the free Adobe Reader or Foxit Reader software.

This lets you view and print your tax return if your tax file gets corrupted or if you no longer have the TurboTax software.

Instructions

1. Open your return in TurboTax.
2. In the upper right corner, click Print Center (or choose Save to PDF from TurboTax's File menu).
3. (Optional) Select an option other than the default All official forms required for filing.
4. Click the Save As PDF button.
5. In the Save As window, change the default location if desired, then click Save.

Here are more detailed instructions.

https://ttlc.intuit.com/questions/1912466-how-do-i-save-my-return-as-a-pdf-in-the-turbotax-for-softw...