Want to add tax in payment notification template

[Ashfaq1]

Hi I have added this code in the payment notification template but tax information is not calculate. 

<tr class="tax-line">
<td class="tax_line.title">
<p>
<span>Tax</span>
</p>
</td>
<td class="tax_value">
<strong> {{ tax_line.title }} ({{ tax_line.rate_percentage }}6) {{ tax_line.price | money_with_currency }}</strong>
</td></tr>

@Shopify