# `Stripe.Params.Checkout.SessionCreateParams.SubscriptionData.BillingMode.Flexible`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/checkout/session_create_params.ex#L2376)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.Checkout.SessionCreateParams.SubscriptionData.BillingMode.Flexible{
    proration_discounts: String.t() | nil
  }
```

* `proration_discounts` - Controls how invoices and invoice items display proration amounts and discount amounts. Possible values: `included`, `itemized`.

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*Consult [api-reference.md](api-reference.md) for complete listing*