I'm working with the trial version (v6) and am encountering miscalculations of Tax 1 (21% VAT) and Tax 2 (-15% for witholding tax).

In the "Totals" section of the dummy quote I'm preparing, for a (correctly calulated) Net amount of 105 the system is telling me that the Tax 1 amount is 27.91 (should be 22.05) and the Tax 2 amount is -13.70 (should be -15.75).

I've fiddled with the settings for both taxes but can't understand how to get the right values. Below is a screenshot of the settings I have for Tax 1 (21% VAT):

Can someone please tell me how I can fix this?

Thanks in advance!