To retrieve old tax returns from TurboTax, start by logging into your TurboTax account. Navigate to the "Tax Home" screen and select "My Tax Returns & Documents" from the dropdown menu. Next, choose the tax year you need, and click "Download/print return (PDF)." If you don't see your return, TurboTax offers options for retrieving older returns, including requesting a copy by mail or purchasing one from the IRS.