Flat coupon amount not displaying correctly

Hi,

I suppose that it's because the value you see there i the coupon without the taxes since the amount of the taxes you see on the line below is also affected by the coupon and it seems that you've configured the cart to display the prices without tax.
If we were to display 1000 there, then if you would add the subtotal - your coupon + the taxes, then the value you be different than the total.

Hi,

On your screenshot of the checkout, the subtotal is 9,497. That's the sum of the price without taxes of the products in the cart.
Then the coupon is added to it, and then the taxes is taxes for the total amount (subtotal-coupon). and then you have the final total which is: (subtotal - coupon + taxes).
So the coupon value you see there is the coupon value before the taxes are added in.
So 847 is the value removed from the sutotal without taxes so that the value removed from the total with taxes is 1000.
That's why it displays 847 there because otherwise, if the customer sums (subtotal - coupon + taxes) and the coupon value is 1000, the total he would found would be different than what is displayed.
The alternative would be to move the taxes row before the coupon row there and display the taxes without taking into account the coupon so that we could display the total coupon value and the sum of the different elements would still match.

Basically, what I'm saying is that the calculations and the display are correct there.
You can of course change the value displayed for the coupon with a bit of code modification in the view displaying that area. To do that, edit the file show_block_cart.php and change the line:

echo $this->currencyClass->format(@$cart->coupon->discount_value_without_tax * -1, @$cart->coupon->discount_currency_id);

echo $this->currencyClass->format(@$cart->coupon->discount_value * -1, @$cart->coupon->discount_currency_id);

Hi,

I don't know how much is the GST rate you configured. So I can't do calculations on the prices I see there and thus can't say if it's correct, incorrect or if something has to be changed and what.
What rate did you configure for your GST tax rate ?

Hi,

Thanks. So here is what I found:

taxes on the subtotal 9497 * 18% = 1709
subttoal with taxes 9497 + 1709 = 11206
total with taxes with coupon added : 11206 - 1000 = 10206
taxes to be displayed with coupon added : 10206*18/100 = 1837