Show price with tax for guests and without for logged in users

In OpenCart Store settings prices are shown with tax!

So it is okay. But when customer logged in, I need it without tax on product page and in category.

How can I modify OpenCart to do this?

Hello @Ivan go to the catalog/controller/product.php and in your public function index() search for the

if ($this->customer->isLogged() || !$this->config->get('config_customer_price')) { 

    $data['price'] = $this->currency->format($this->tax->calculate($product_info['price'], $product_info['tax_class_id'], $this->config->get('config_tax')), $this->session->data['currency']);  `

    }else {  
     $data['price'] = false;
    }

Change it to :

if ($this->customer->isLogged() || !$this->config->get('config_customer_price')) { 
    $data['price'] = $this->currency->format($product_info['price'], $this->session->data['currency']); 

}else {  
 $data['price'] = false;
}