PayPal Calculation Error

[jbaranello]

Hi guys,

 

I think I may have found a little bug. It seems that when I set the carrier to use a tax rule that it calculates it twice once you try to checkout with paypal. 

 

First it shows you the price tax included in the carrier select section. Then once you get to paypal checkout it uses the Tax included value it computed before and uses it as the TAX EXCL. value on the paypal checkout page. It then goes on to calculate the tax on the total which has the tax included in the shipping already. It basically double taxes the shipping value.

 

Has anyone else seen this?

 

Thanks

 

Jason

[jbaranello]

Hi Again,

 

I have included a few screenshots to help better understand my problem.

 

Thanks

 

Jason

[jbaranello]

bump

[jbaranello]

Hey Guys,

 

Just noticed something about my problem. It seems this happens before we get to the paypal section. It is as if the tax excl value is being replaced with the tax incl value.

 

Thanks

 

Jason

Edited May 14, 2014 by jbaranello (see edit history)

[jbaranello]

bump

[jbaranello]

Hey Guys,

 

Been looking but not sure which files are called as the checkout process progresses. Can anyone explain?

 

Thanks

 

Jason

[jbaranello]

bump

[jbaranello]

No one else see this??

 

Thanks

 

Jason

[tdr170]

What version of Paypal are you using.

[jbaranello]

I am using Paypal 1.3.3 with PS 1.6.0.6

 

Thanks

 

Jason

[tdr170]

I tested this today and it is an issue with the module, I then switched to module 3.6.8 and the total paid was correct, you can test it yourself, if you do not have this module version you can download it here.

 

(Post #11)

http://www.prestashop.com/forums/topic/323900-1606-paypal-payment-return/

[jbaranello]

Will this work for Canada?? I saw in the topic you linked that it works for the US.

 

Thanks

 

Jason

[tdr170]

OK after some testing I have found a solution that seems to work, I noticed that the blockcart also showed the shipping cost+tax then the tax amount also included the shipping tax, the total was correct but still seemed confusing so first I wanted to fix that.

(not the cart summery)

 

Here is the solution I found:   change $usetax to $WithoutTaxes

 

modules/blockcat.php at line 68

$base_shipping = $params['cart']->getOrderTotal($useTax, Cart::ONLY_SHIPPING);

to this:

$base_shipping = $params['cart']->getOrderTotal($WithoutTaxes, Cart::ONLY_SHIPPING);

 

 

Now to change the Paypal shipping: change true to false

 

modules/paypalusa/views/templates/hook/standard.tpl at line 48

change this:

{assign var="paypal_usa_total_shipping" value=$cart->getOrderTotal(true, Cart::ONLY_SHIPPING)}

to this:

{assign var="paypal_usa_total_shipping" value=$cart->getOrderTotal(false, Cart::ONLY_SHIPPING)}

 

 

I just finished testing and seems to work please let me know if this works for you and I will report to Prestashop.

[jbaranello]

Hi tdr170,

 

Great , it works!!! I will test more thoroughly to see if it causes any problems but so far so good.

 

Thank you so much I appreciate it. 

 

Jason