Giftcard and tax

I am setting up site with virtuemart 3. Giftcard works selling out but using have issues with tax. As I need to use gift without tax (we have multible taxes) in cart after tax. Total sum is fine but the virtuemart_order_calc_rules table change item calc_result after putting coupon code in cart. Tax calculation need (in our case) to same as before code. This is for accounting after sales.

Is there way to use coupon code without tax update ?

Yes, I use that config. Even so the calc_result change after setting giftcard code.

Ok, would need more information.  Maybe even images of what it is and what it should be with an actual example.  Right now, I really do not understand the problem.

Cart: item 35 euros, tax 14%
no coupon -> calc_amount 4,30 and calc_result 4,30 
10% coupon (tax calculation before tax, voucher exclude) -> calc_amount 4,30 and calc_result 3.87000 .... OK

10€ gift (discount after tax) -> calc_amount 4,30 and calc_result 3.07000 .... not ok to me.

in my case we need to pay taxes full amount with gift card because we had the money earlier when gift was sold with no tax.

- I create a $10 coupon, and set function type to gift certificate

My taxes are: VatTax, +% and 14

i am using VatTax +% 25, so not the issue.

In awocoupon > installation check, do you have everything installed?

Yes, all installed and publish.

Try uninstlaling and installing calculationh.php item.  Then run a new test.  If that does not work, then it would need debugging, not sure.  For that you can send me temp access via private message.

I do that. Can you tell how I can detect from vm cart data array the difference between coupon and giftcard ?

Vm cart does not hold that information, you would have to reference it in AwoCoupon.

After much checking, I notice that this behavior is vm 3.8.x not in 3.6.x. My live site is still 3.6 and dev is 3.8.

Not sure if that is the problem either.  My above test is in Virtuemart 3.8.4.  Exactly what version are you running in dev?

Latest + 3.8.6 10373

Just tested latest, still working fine.

Mystery, my 3.6 works ok but from that update 3.8 does not. Same server and config.

From where this isVmVat line in cartData comes from ?