Coupon discount will be calculated incorrectly

I am using joomla 1.5 with virtuemart version 1.1.9 and AwoCoupon Pro. Coupon type = category and percent discount type = Special, valid for all customers 1x. Store in the coupon discount is calculated but the entered percent (10%) with VAT. I need a calculation of VAT. What am I doing wrong?

Hello,

Can you explain the wrong calculation, maybe give an example of what you are getting and what you want to get?

Hello,
Here's an example:

Product A - select category - Price = € 22.50
Product B - select category - Price = € 22.50
Product C - not selected category - Price = € 93.90

Subtotal: € 138.90
Shipping: 5.18 €
VAT: € 25.53

Coupon Discount: - € 5.36 (incorrectly)
here would - 4,50 € available (product A + B = 10%)

Is 22.50 the price before VAT? If so have you tried setting enable discount before tax to yes in awocoupon->configuration?

Hello,
yes - 22.50 is the price before tax and configuration> general> Discount applied before taxes = yes

Other settings:
Enable Virtuemart Coupons = yes
Activate multiple coupons = no
Enable entry of shipping coupon before shipper is selected = no

Actually the discount is correct:
https://awodev.com/blog/virtuemart-coupon-error-discount-before-tax#background

It should be showing the discount including the discount on tax. The only thing that changes is the tax, it is either discounted or not. Please verify that the vat is discounted.

Hello,
Thanks for the quick reply. I will try the proposed solution on Monday.

Hi Seyi,

I've been trying to fix for your disclosures (https://awodev.com/blog/virtuemart-coupon-error-discount-before-tax # background) the error. Unfortunately without success.

Cart
Name SKU Price Quantity / Update Subtotal
Ladies Bars "Lina", left
Select size: 2
Selection () 397-1 € 22.50
€ 22.50
Ladies Bars "Lina", right
Select size: 2
Selection () 397-2 € 22.50
€ 22.50
Sub-total: € 45.00
Tax: € 8.55
Coupon Discount: - € 5.36

Final total: € 53.55

What am I doing wrong?

Hi Seyi.
I solved the problem with the TVA thanks to your help.
Well unfortunately a new problem arises.
When a new customer registers in the shop, and ordered the first time in the cart enters their coupon code, it is not recognized. Is there a solution?

Hello,

Not that I know of, I am not familiar with such a problem where entering the code the first time it is not recognized. did you make edits to the code? If so, I would suggest backing it up, adding the default virtuemart files and testing it to see if it is an edit you added.