Navigate to Administration General Administration ->Tax Codes.
Select the code VAT and click on the change button.
Enter the new VAT amount and select the save button.
All the Transactions that were captured before the change will still reflect as having original VAT percentage associated with them.
After the change should new Invoices be opened on the Point of Sale and new Deliveries be captured on PlusCentral these will all reflect the new VAT, without additional intervention.
Should there be existing or uncommitted Orders, Deliveries, Internal Issues or Reductions in the system they can still be committed with the old VAT percentage, by simply selecting the delivery and selecting the button.
Should the user continue to tab through the Delivery lines before committing the delivery the VAT percentage will automatically be updated from old amount to the new amount.
Uncommitted Delivery after VAT change with 15% VAT still reflected: