Taxes are not broken out in the QuickBooks import; the amounts posted to your revenue accounts in your QuickBooks account will include the tax component. Run a Paid Fees Report to see the tax amounts and create a journal entry in QuickBooks to back those amounts out of your revenue.
Jackrabbit's QuickBooks integration does not feed into the QuickBooks tax functionality. If it is necessary to use the tax reporting and filing in QuickBooks, do NOT use the export/import. Instead, create a ‘sales invoice’ in QuickBooks to enter Jackrabbit revenue into QuickBooks. Use the data on the Revenue Snapshot report as your journal entry source. Break out the sales tax when entering data to feed into the QuickBooks tax functions.