Tax charged incorrect when using a coupon

Hi,
I am using the current version of Zen and am based in Australia. We must display all prices with our tax inclusive (10%)
When a discount coupon is used the following error occurs.

Example :

Sub - total $14.95 (gst included)
Postage $5.00
Discount Coupon - $1.50
GST (included) $1.22
Total $18.59

Everything looks O.K. until you add them together. The total included the original amount of tax (tax on $14.95 is $1.36). The tax amount displayed is correct as it is based on the discounted amount. The total charged should read $18.45 but is .14 more, or the difference in the tax.

If any one else has had this same issue I would be appreciative of any help!

Sorry!!
After a little more swapping around I found I had not done one simple little thing of marking the re-calculate tax as standard in the Order Total Modules.
Sorry again!

Thanks for the update on the configuration setting that was missed ... :smile: