Associating a tax line with each account lets you:
Import tax data into our TurboTax or ProSeries tax products.
Create tax reports in QuickBooks that help you prepare tax forms. The
reports show the amounts to fill in for each tax line on the tax forms.
Choose the tax line on which you would report the income or expenses tracked
by this account. For example, if the account tracks your automobile expenses,
you would choose "Schedule C: Car and truck expenses." If you are not
sure which tax line to choose for this account, check with your accountant.