how to add additional costs in addition to the tax rate?

@calle81 You can additional fee to the WooCommerce cart using WooCommerce filters. For reference please see https://woocommerce.com/document/add-a-surcharge-to-cart-and-checkout-uses-fees-api/

Thanks @subratamal for the reply, but I would like to add this fee only to the Product ID for Wallet Top-up. You can help me?

Thanks

@calle81 Please use the attached code in the theme functions.php file.

/**
 * Add a transaction fee to wallet recharge in cart / checkout
 */
add_action( 'woocommerce_cart_calculate_fees', 'wc_add_transaction_fee' );
function wc_add_transaction_fee() {
	if ( is_admin() && ! defined( 'DOING_AJAX' ) ) {
		return;
	}

	// change the $fee to set the surcharge to a value to suit.
	$fee = 0.20;

	if ( is_wallet_rechargeable_cart() ) {
		WC()->cart->add_fee( 'Transition Fee', $fee );
	}
}

Thanks @subratamal, but it doesn’t work. The fee is added to the checkout page but when I go to paypal the additional € 0.20 is not added.

Example if I have to pay € 30 instead of being paid € 30 + 10% + 0.20 for a total of € 33.20, it charges me only € 33 on paypal without the € 0.20 of the additional fee.

@calle81 Please try the attached updated code and let us know.

/**
 * Add a transaction fee to wallet recharge in cart / checkout
 */
add_action( 'woocommerce_cart_calculate_fees', 'wc_add_transaction_fee' );
function wc_add_transaction_fee() {
	if ( is_admin() ) {
		return;
	}
	$fee = array(
		'name'   => __( 'Transition Fee' ),
		'amount' => 0.20,
	);
	if ( is_wallet_rechargeable_cart() ) {
		wc()->cart->fees_api()->add_fee( $fee );
	}
}

Thanks @subratamal , but no this php snippet works for me either… ??

Hi @subratamal , do you have any news? Thanks.

@calle81 This code is working for us please contact your theme developer and check if there is any plugin or theme conflict.

@subratamal ok. Thanks.