2024 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2023 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2022 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2021 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2020 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2018 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2017 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)

2015 26 USC 506 – Organizations required to notify Secretary of intent to operate under 501(c)(4)