Our system calculates sales tax by each individual line item in an order and rounds that amount to the penny. Then the system adds these rounded numbers. If you calculate the sales tax on the total order (instead of by each line item) and then round the result, you may get a different number. This is most likely the reason for a discrepancy.
If you have any further questions please don’t hesitate to email FinancialServices@premierdesigns.com