To obtain recognition as a 501(c)(3), tax-exempt entity, Form 1023 must be filed with the Internal Revenue Service. Form 1023 is a 29-page, comprehensive look at an organization’s structure and programs. Given the number of additional schedules, attachments and exhibits that may be required in addition to the application itself, most Form 1023 filings range between 50-100 pages of information.
Go here to get a look at Form 1023.
Form 1023-EZ is a much more generalized document that does not require written budgets or narratives. Form 1023-EZ is specifically designed for certain, low-budget organizations.