If you need to go back and include tax on lessons/events retroactively, here's what to do:

  1. Click "Settings" in the top right-hand corner and select "Studio Settings" from the drop-down menu.
  2. Select the "Sales Tax" tab.
  3. Click the "Apply..." button.
  4. On this popup, select the date from which My Music Staff should begin including the default selected taxes.
  5. Click "Apply" to apply this change to lessons/events that are already on your calendar. It may take a minute or two to complete.

This is only necessary if you've already scheduled lessons and need to apply a sales tax retroactively. Once you've added your local sales taxes My Music Staff will automatically include them when scheduling new lessons.