a non partisan comparison of QBO vs QB desktop
http://onsale-apparel.com/Rustler/qbo-or-qbdt
set up and memorize this custom report for sales tax, it is the closest I could come to desktop reporting

left side menu, reports, then in search  enter sales and select Sales By Customer Detail
Click customize upper left
select change columns, […]

Resolution for 'add Tax Amount issue: 'Why won’t the online Quickbooks produce a sales tax liability report like the desktop version? This is not user friendly and I think I’ll move back to Quckbooks desktop' available: Yes.

The add Tax Amount issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the add Tax Amount issue yourself by looking for a resolution described in the article. If it is a complex add Tax Amount issue or you are unable to solve the issue, you may contact us by clicking here or by using other add Tax Amount support options.

For more information about resolving issues related to add Tax Amount in Quickbooks/QBO or to get support for the issue 'Why won’t the online Quickbooks produce a sales tax liability report like the desktop version? This is not user friendly and I think I’ll move back to Quckbooks desktop', click the link below: