Tax placeholders for Price Display Suffix

tax_placeholders_for_price_display_suffix.php

<?php

/**
 * @snippet      Tax placeholders for Price Display Suffix | WooCommerce
 * @comment      Use "{tax_rate}" and "{tax_rate_label}" placeholder for displaying the product tax rate and its label
 * @source       https://gist.github.com/vyskoczilova/2ff56afcfd4c75338fb7f0be3a5615c2
 * @author       Karolína Vyskočilová (https://kybernaut.cz)
 * @testedwith   WooCommerce 4.2
 */
// -------------------

add_filter( 'woocommerce_get_price_suffix', 'replacement_for_tax_class_name', 99, 4 );
function replacement_for_tax_class_name( $html, $product, $price, $qty ){

    $tax_rates = WC_Tax::get_rates( $product->get_tax_class() );
    $tax_rate_value = '';
    $tax_rate_label = '';

    if(!empty($tax_rates)){
          foreach($tax_rates as $tax ){
              $tax_rate_value = rtrim($tax['rate'], "0");
              $tax_rate_value = rtrim($tax_rate_value, ".");
              $tax_rate_label = $tax['label'];
          }
    }

    $replacements = array(
        '{tax_rate}' => $tax_rate_value,
        '{tax_rate_label}' => $tax_rate_label,
    );

    $html = str_replace( array_keys( $replacements ), array_values( $replacements ), $html );

    return $html;
}

very thanks i exactly looking for it days

@Ansolon glad it helped :) (I assume that you have the newest WooCommerce so I bumped the version)

Yes its working on wordpress 5.4.2 and woocommerce 4.2.0
Thanks again