No. You should complete your 2016 now. You can do your 2015 at your leisure. You can purchase previous year software through the TurboTax portal. Follow this link to acquire software from previous tax years:
https://turbotax.intuit.com/personal-taxes/past-years-products/. It is important to note that you will need to download the software to your computer to complete your returns. You will also have to file these via regular paper mail.
