Also like FFBC, the deferred HC charges may be redeemed (paid in full) to avoid the interest charges. The pay-in-full amount includes a service charge designed to reimburse WSSC for part of the administrative cost related to processing the redemption. All redemptions must be paid in full by May 31st of any given year to be removed from the current year’s tax bill. (Property assessments manual § 12.2, dated October 1998)