Create an item for a subtotal. Then insert that item in the body of the invoice. This will avoid the print preview.
Also, you can check your template, the footer section to possibly check off the to have display on the screen.
Resolution for 'before tax show issue: 'Why doesn’t the subtotal before tax show when you are creating a Customer Invoice?' available: Yes.
The before tax show 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 before tax show issue yourself by looking for a resolution described in the article. If it is a complex before tax show issue or you are unable to solve the issue, you may contact us by clicking here or by using other before tax show support options.
For more information about resolving issues related to before tax show in Quickbooks/QBO or to get support for the issue 'Why doesn’t the subtotal before tax show when you are creating a Customer Invoice?', click the link below: