We have ran into an issue with a customer adding a coupon to their cart and viewing prices including or excluding VAT.

We currently have VAT set at 20% on everything. Website by default shows prices including.

If I have £51.00 total value of products including VAT in my cart and add a coupon that gives 5% on orders over £50, it works perfectly.

No problems at all.

Now with the same set up and same coupon if I change to view all prices excluding the coupon throws an error saying this coupon can only be used on orders over £50.

I have not posted this under just version 9 because I have a feeling it might happen on all versions of the store.

Now the shipping threshold works off total in cart including VAT. Yet the coupon does not seem to use this.

Any fix for this?