The IRS allows certain closely related nonprofit organizations to file for tax exemption as a group. The group exemption letter can be used by any members of the group in the same manner an individual exemption letter would, thus saving group members time and money. National organizations with state chapters (or state organizations with local chapters) are excellent candidates for a group exemption from the IRS.
Either existing or new organizations can file for group tax exemption. In either case, they must fall under certain criteria:
Page 2 of this pdf file from the IRS contains detailed instructions on obtaining a group exemption. New subordinates are covered under the pre-existing tax exemption, so long as they fit the criteria.
Once the IRS has issued a group tax exemption letter, the central organization must provide an annual report containing:
While a group tax exemption number decreases the amount of paperwork required, it does not change the filing requirements of nonprofit organizations. The central organization and all subordinates must still get a seperate Employer Identification Number (EIN) and file Form 990 if required by law.