Cart Tax – Calculate Grand Total Without Tax

This helped me with a similar issue

"We're working in a 1.9 & PHP 7; detected this issue with paypal suspect fraud (due the difference amount).

All correct in front-end (apply taxes); but in checkout and calculation, Magento uses the grand total without taxes.

Actual wrong order calculation:

Product price without taxes + shipping with taxes = total amount to payment

Switch to PHP5 and calculation is correct.

Some idea?

Thanks!"

"On Magento 1.6.2 and PHP 7.0.2 I solved it this way:"

1 - Created first a local config.xml: Copied /app/code/core/Mage/Sales/etc/config.xml into /app/code/local/Mage/Sales/etc/config.xml

2 - Changed it like this enter image description here

Now it calculates correctly:

The correct way to do that is creating a NEW module with the new configuration like this one on https://github.com/hartmut-co-uk/magento-php7-totals-fix

To avoid editing core files.

All credits thanks to => original source

you can managed this settign from admin

Go to admin>System>Configuration>Sales>Tax>Shopping Cart Display Settings

make Display Subtotal=Excluding Tax

enter image description here

you can managed tax display setting on cart page,from here :

admin>System>Configuration>Sales>Tax>Shopping Cart Display Setting

=================================================================== How to do this (programatically)....

Under {magento_base}/app/design/frontend/base/default/template/tax/checkout/

Edit file grandtotal.phtml (I suggest you make a backup of the file just in case).

Find the line:

<?php if ($this->includeTax() && $this->getTotalExclTax()>=0):?>

Delete the subsequent lines:

<tr>
    <td style="<?php echo $this->getStyle() ?>" class="a-right" colspan="<?php echo $this->getColspan(); ?>">
        <strong><?php echo $this->helper('tax')->__('Grand Total Excl. Tax')?></strong>
    </td>
    <td style="<?php echo $this->getStyle() ?>" class="a-right">
        <strong><?php echo $this->helper('checkout')->formatPrice($this->getTotalExclTax()) ?></strong>
    </td>
</tr>

This change means it will now only show the tax inclusive line in the cart review.