If the change in circumstances results in an increase in grant, the increase becomes effective the month after the month in which the change is reported. If the increase is not reflected in the effective month’s check, issue a deficiency payment.
Also issue deficiency payments to SNC participants when an underpayment of benefits has been made due to an error by the agency. Issue deficiency payments only on behalf of persons currently receiving assistance and only for the 12-month period preceding the month of discovery of the underpayments.