magento-test/app/code/Magento/Tax/view/frontend/templates/checkout/grandtotal.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

/**
 * @var $block \Magento\Tax\Block\Checkout\Grandtotal
 * @var \Magento\Framework\View\Helper\SecureHtmlRenderer $secureRenderer
 */
?>
<?php
$style = $block->escapeHtmlAttr($block->getStyle());
$colspan = (int) $block->getColspan();
/** @var \Magento\Checkout\Helper\Data $checkoutHelper */
$checkoutHelper = $block->getData('checkoutHelper');
?>
<?php if ($block->includeTax() && $block->getTotalExclTax() >= 0): ?>
    <tr class="grand totals excl">
        <th class="mark" colspan="<?= /* @noEscape */ $colspan ?>" scope="row">
            <strong><?= $block->escapeHtml(__('Grand Total Excl. Tax')) ?></strong>
        </th>
        <td class="amount" data-th="<?= $block->escapeHtmlAttr(__('Grand Total Excl. Tax')) ?>">
            <strong><?= /* @noEscape */ $checkoutHelper->formatPrice($block->getTotalExclTax()) ?></strong>
        </td>
    </tr>
    <?php if ($style): ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals.excl th.mark') ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals.excl td.amount') ?>
    <?php endif; ?>
    <?= /* @noEscape */ $block->renderTotals('taxes', $colspan) ?>
    <tr class="grand totals incl">
        <th class="mark" colspan="<?= /* @noEscape */ $colspan ?>" scope="row">
            <strong><?= $block->escapeHtml(__('Grand Total Incl. Tax')) ?></strong>
        </th>
        <td class="amount" data-th="<?= $block->escapeHtmlAttr(__('Grand Total Incl. Tax')) ?>">
            <strong><?= /* @noEscape */ $checkoutHelper->formatPrice($block->getTotal()->getValue()) ?></strong>
        </td>
    </tr>
    <?php if ($style): ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals.incl th.mark') ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals.incl td.amount') ?>
    <?php endif; ?>
<?php else: ?>
    <tr class="grand totals">
        <th class="mark" colspan="<?= /* @noEscape */ $colspan ?>" scope="row">
            <strong><?= $block->escapeHtml($block->getTotal()->getTitle()) ?></strong>
        </th>
        <td class="amount" data-th="<?= $block->escapeHtmlAttr($block->getTotal()->getTitle()) ?>">
            <strong><?= /* @noEscape */ $checkoutHelper->formatPrice($block->getTotal()->getValue()) ?></strong>
        </td>
    </tr>
    <?php if ($style): ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals th.mark') ?>
        <?= /* @noEscape */ $secureRenderer->renderStyleAsTag($style, 'tr.grand.totals td.amount') ?>
    <?php endif; ?>
<?php endif; ?>