Premium Surcharge Procedures At the end of each fiscal quarter, insurers must submit an amount equal to the premium surcharge collected from policyholders during that quarter. The payment shall be submitted no later than 30 days after the end of each quarter. The following table illustrates the due dates for the periods covered in each quarter: Quarter Covered     Period Due By First Quarter October 1 - December 31 January 31 Second Quarter January 1 - March 31 April 30 Third Quarter April 1 - June 30 July 31 Fourth Quarter July 1 - September 30 October 31 Checks shall be made payable to the DC Treasurer and transmitted with the "Quarterly Premium Surcharge Payment Form." Checks and forms are to be submitted to the following office: DC Department of Employment Services Office of the Chief Financial Officer 64 New York Avenue, NE, 3093 Washington, DC 20002 (202) 671-1400 A copy of the form must also be submitted to: DC Department of Employment Services Office of Workers' Compensation P.O. Box 56098, Insurance Unit Washington, DC 20011 (202) 671-1000