Tax Formula Isnt Working Properly

[CrossY]

Hi there,

 

In a module for PDF invoice creation (not mine) there is a tax calculation, but it doesn't seem to work properly. It doesn't add the tax applied in the shop. Shop prices work fine.

$productPriceOld = $product['product_price'] + ($product['product_price']*($taxRate/100));

When I manually edit it to 21(% TAX) it does work:

$productPriceOld = $product['product_price'] + ($product['product_price']*(21/100));

Anyone knows how to fix this..? I don't think it's smart to manually manipulate the tax, especially for invoices...

 

Using Prestashop 1.5.4.1

 

Best,

Dave

Edited November 23, 2015 by CrossY (see edit history)

[CrossY]

Solved. Apparently the #taxRate wasnt built up or called in anywhere (you can tell i'm a programmer noob).

$total_price_tax_incl=$product['total_price_tax_incl'];
$total_price_tax_excl=$product['total_price_tax_excl'];
$taxRate = (($total_price_tax_incl-$total_price_tax_excl)/$total_price_tax_excl)*100;
$productPriceOld = $product['product_price'] + ($product['product_price']*($taxRate/100));

No idea how this relates to other modules/files.. but this worked for this module.