Scope of Service is summarized on the link below for the types of returns we can and cannot do. Scope is determined by the IRS and AARP Foundation TaxAide and all volunteers rely on the comprehensive Scope Manual. Although there are no age, income or membership requirements to use our service, all returns must be in-scope. Complex returns and returns of high-income taxpayers may trigger additional required forms or specific training that are out-of-scope. Any one out-of-scope issue in a return makes the entire return out-of-scope. Scope is evaluated regularly and some things may change. A return TaxAide prepared in a prior year may be out-of-scope in the current year.