Need Urgent Help Please - VAT and Gift / Discount Voucher class

[johnr]

Hi All,

 

I've been using the discount voucher contribution for a few weeks now and generally it is fine. Except i've eralised it's not calculating the VAT properly for invoices!

 

As an example

 

Sub-Total: ?19.96

Postage & Packing: ?2.99

Discount Coupons: -?2.30

Total Ex Vat: ?17.58

VAT 17.5%: ?3.42

Total: ?20.66

 

This is basically right apart from the VAT 17.5% bit which should be ?3.08- the ?3.42 that is showing is the value of the VAT on the non-discounted total (ie, the VAT on 19.96+2.99 )

 

I've spent hours chaning the order etc, but I can't get it to work.

 

Is there a solution to this please?

 

MANY Thanks

 

John