I've had to de-register for VAT so needed to change this. Please back up the invoice.php file first. Its not perfect but it is better. See the original fix and amend to this


<tr class="dataTableHeadingRow">
<td class="dataTableHeadingContent" colspan="2"><?php echo TABLE_HEADING_PRODUCTS; ?></td>
<td class="dataTableHeadingContent"><?php echo TABLE_HEADING_PRODUCTS_MODEL; ?></td>
<td class="dataTableHeadingContent" colspan="5" align="right"><?php echo TABLE_HEADING_TOTAL_INCLUDING_TAX; ?></td>
</tr>

And then this section to this

echo ' <td class="dataTableContent" align="right" valign="top">' . zen_display_tax_value($order->products[$i]['']) . '</td>' . "\n" .
' <td class="dataTableContent" align="right" valign="top"><b>' .