Hello info219,
This happens when Track VAT is selected when first setting up the account - there is no way to undo this. You will need to select No VAT on the transactions, when it asks if you would like to set this as the default code, select yes so it will always assume the transactions are No VAT. You can also go to account & settings > advanced > default tax rate and select No VAT so that it does the same when creating transactions.
Thanks,
Talia
