24 CFR §5.240

1. (a)This section applies to families that reside in dwelling units with assistance under the public housing program, the Section 8 tenant-based assistance programs, or for which project-based assistance is provided under the Section 8, Section 202, or Section 811 program.
2. (b)The family must promptly furnish to the responsible entity any letter or other notice by HUD to a member of the family that provides information concerning the amount or verification of family income.
3. (c)The responsible entity must verify the accuracy of the income information received from the family, and change the amount of the total tenant payment, tenant rent or Section 8 housing assistance payment, or terminate assistance, as appropriate, based on such information.