QuickBooks uses a rounding method to calculate sales tax. For example, if your input rate/unit price was 37.37499999, it would be rounded to 37.37500000, and thus, the further procedure for the amount calculation might be inconsistent. However, this method of calculating taxes may cause discrepancies between the taxes on invoices and sales orders. We understand how frustrating it could be, especially when they affect your ability to close out sal...