HUD HCV Guidebook § 7.3

The receiving PHA must94 send a new Form HUD-52665 to report a change in the billing amount along with
form HUD-50058. As it relates to changes in the HAP amount, both options 4 and 10 under Part II-B of form
HUD-52665 must95 be completed.
Receiving PHAs must96 notify the initial PHA of changes in the billing amount no later than 10 business days
following the effective date of the change. HUD strongly encourages receiving PHAs to notify the initial PHA of
billing changes at the same time that it notifies the owner and the family in order to provide the initial PHA
with advance notice of the change.
If the receiving PHA fails to send the Form HUD-52665 and Form HUD-50058 within 10 business days
following the effective date of the HAP change, the initial PHA is not responsible for paying any increase in the
monthly billing amount incurred prior to the notification. If the change resulted in a decrease in the monthly
billing amount, the initial PHA will offset future monthly payments until the difference is reconciled. The
examples below illustrate this policy.