Represents a tax form (1099-INT or 1099-MISC) generated for a customer.
Tax forms are generated annually for customers who earned interest or received rewards above IRS reporting thresholds.
@type t() :: %Unit.Resource.TaxForm{ account_id: String.t() | nil, customer_id: String.t() | nil, form_type: String.t() | nil, id: String.t(), tax_year: String.t() | nil, type: String.t() }