Basically I have Q's auto discount extension on and this applies a percentage discount to the sub total. But when tax is applied the maths on the invoice don't add up and worse still it doesn't match my customer's Sage accounting package.
As an example
Code: Select all
Sub-Total: £268.14
Volume Discount: ( 2.5 %): -£6.70
Free Shipping: £0.00
VAT: £52.29
Total: £313.72
268.14 x .975 x 1.2 = 313.72 is correct
but 268.14 - (268.14 x.0975) + ((268.14 x.0975) x .2) = 313.73 is also correct which is what the invoice kind of shows and what my customer wants. SI there any way to adjust the rounding?