please add this to functions php
//Add price inc VAT column on admin order page
function action_woocommerce_admin_order_item_values( $null, $item, $absint ) {
$val = ($item[‘type’] == ‘line_item’ || $item[‘type’] == ‘shipping’) ? $item[‘total’] + $item[‘total_tax’] : ‘ ‘;
$valdecimal = wc_format_decimal( $val, $dp=”, $trim_zeros );
?>
};
add_action( ‘woocommerce_admin_order_item_values’, ‘action_woocommerce_admin_order_item_values’, 10, 3 );
function action_woocommerce_admin_order_item_headers( $order ) {
echo ‘
Price with Vat
‘;
};
add_action( ‘woocommerce_admin_order_item_headers’, ‘action_woocommerce_admin_order_item_headers’, 10, 3 );
credit
https://stackoverflow.com/questions/46546482/woocommerce-admin-order-detail-page
