Account management

Yes, you can downgrade. Go to -
<a rel="nofollow" target="_blank" href="http://qbo.intuit.com/app/changeplan">http://qbo.intuit.com/app/changeplan</a>

There is also a video regarding the process -
<a rel="nofollow" target="_blank" href="https://www.youtube.com/watch?v=7JFEqzT_MlI">https://www.youtube.com/watch?v=7JFEqzT_MlI</a>