Add custom fee to recurring total WooCommerce subscription

Question

function add_woocommerce_stripe_fee() {
    if ( ( is_admin() && ! defined( 'DOING_AJAX' ) ) || ! is_checkout() )
        return;
 
    $chosen_gateway = WC()->session->chosen_payment_method;
        
    if ( 'stripe'  ==  $chosen_gateway ) {
        $fee = (WC()->cart->cart_contents_total * .035) +0.35;       
        WC()->cart->add_fee( 'Stripe Fee', $fee, false, '' );
    }
}
add_action( 'woocommerce_cart_calculate_fees','add_woocommerce_stripe_fee' );

It is not adding for recurring cart total but works fine for the normal products ( not working for WooCommerce Subscription products ). Any help would be greatly appreciated. Is this possible.?

Answer 1

I provided a more in-depth answer on a similar question.

Long story short try adding this:

add_filter( 'woocommerce_subscriptions_is_recurring_fee', '__return_true' );

And check out the Woocommerce doc that provides some examples that may help you.