Yes you can do that. When you are using the software you will notice an "upgrade" button on the tool bar at the top and you will be charged for the difference in price.
BUT......
You appear to be posting from online software instead of the desktop CD/download software that the license code is for. If you are using online, you are using the wrong program. You need to switch to the desktop software to get what you paid for. You have to download it, update it and open it up from your own hard drive to use it.
https://ttlc.intuit.com/community/choosing-a-product/help/how-do-i-switch-from-turbotax-online-to-th...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
