we use payment based W/H tax, we record vendor invoice 107 USD expense account 100 USD, 7 USD for VAT, 107 USD is credit AP
when we do payment, we
Cr bank 103.79
Cr: W/H tax 107*3%=3.21 USD
Dr AP 107
but tax law says W/H tax should be based on 100 USD, thus Cr: W/H tax should be 3 USD not 3.21 USD, I have tried so many times, can't get 3 USD, any configuration i need to change?