24 CFR § 203.330
Definition of delinquency and requirement for notice of delinquency to HUD
February 22, 2021
(a) A mortgage account is delinquent any time a payment is due and not paid.
(b) Once each month on a day prescribed by HUD, the mortgagee shall report to HUD all mortgages insured under this part that were delinquent on the last day of the month, or that were reported as delinquent the previous month. The report shall be made in a manner prescribed by HUD.
[71 FR 16234, Mar. 31, 2006]