Why isn't the tax amount included in the line amount of a transaction line?

The line amount doesn't include the tax amount if you don't enable the Allow override and entry of inclusive tax lines option.

You can't update the inclusiveness of a tax line in these scenarios:

• When prepayments are applied to invoices

• When an invoice is partially or fully paid

• When withholding taxes are applied

• When the invoice amount is encumbered

• When the invoice is matched to a purchase order or a receipt

• When the invoice is of the type Expense Report or Intercompany

• When a credit or debit memo is applied to an invoice

• When the tax line is already specified as a self-assessed part of an offset tax

• When the tax line is canceled