# `Stripe.Params.TestHelpers.ConfirmationTokenCreateParams.PaymentMethodData.Boleto`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/test_helpers/confirmation_token_create_params.ex#L278)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.TestHelpers.ConfirmationTokenCreateParams.PaymentMethodData.Boleto{
    tax_id: String.t() | nil
  }
```

* `tax_id` - The tax ID of the customer (CPF for individual consumers or CNPJ for businesses consumers) Max length: 5000.

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