corytea

[rare tartan]

and I am doing this

$invoice_preview = \Stripe\Invoice::upcoming([
  'customer_details' => [
    'address' => [
      'country' => $country_code,
      'postal_code' => $postal_code,
    ],
  ],
  'subscription_items' => [
    [
      'price' => $plan_type,
      'quantity' => 1,
    ],
  ],
  'automatic_tax' => ['enabled' => true],
]);

Will I be chargeed everytime I do this?

[silver thicket]

AFAIK, no. But would recommend double checking with support as they're better equipped to answer fees related questions.