A denial by the IRS of 501(c)(3) status, known as an adverse determination, is a very difficult situation. An adverse determination can be appealed, but it is a enormous undertaking absolutely requiring professional representation. Alternatively, the organization may choose to apply again from scratch. In either case, it is usually an uphill battle to acquire 501(c)(3) recognition once an organization’s initial application has been rejected. All the more reason to consider acquiring competent assistance at the beginning of the process.