Hi there, lrinfl.

The version of QuickBooks Online you'll use will depend on the business type that you have. You'll need to choose a plan that can help file your tax return.

You can browse this article to select the version of QuickBooks that you need: See which version of QuickBooks is right for you.

About moving to QuickBooks Online (QBO), Fiat Lux - ASIA is right. You need the latest version since we no longer support QuickBooks Desktop 2013. 

Hence, you can download a trial version of QuickBooks Desktop. Then, move your QuickBooks company file to QBO.

Also, you can dive in and experiment with features and options in QBO. Simply use our sample company file through this page: Test drive QuickBooks Online.

Get back to me if you have additional questions by commenting below. I'm always around to answer your concerns.