A social welfare organization is an nonprofit organization exempt under Code Section 501(c)(4). It is similar to a 501(c)(3) organization in that its income is generally exempt from tax and is subject to the same limits on private inurement and excessive payments to insiders. It is different, however, in that contributions to it are not deductible as charitable contributions and it is able to conduct unlimited lobbying activities. Section 501(c)(4) exempts:
* nonprofit civic organizations operated exclusively for the promotion of social welfare; and
* local associations of employees whose earnings are devoted to charitable, educational, or recreational purposes.