Change the tax charged on a purchase invoice

Question/Problem 

The tax rate used by your supplier is different than that specified in the stock item record, or the VAT Country as per [System Values | General].

Resolution/Solution 

Before posting the purchase invoice to the accounts, the following steps should be taken from within the purchase invoice:

1. Click Edit.
   
2. Disable the AUTO CALCULATE toggle.
   
3. Manually set the tax charged for each item on the purchase invoice.
4. Click Save Screen when finished.
   
1. Remember the invoice will still need to be posted to the accounts.