The United States Citizenship and Immigration Service has launched an Online Fee Calculator to assist in calculating fee amounts when filing with USCIS using an agency lockbox facility. The fee calculator was created in an attempt to curb the number of rejected applications made to USCIS due to incorrect fee amounts paid to the Service. The online instrument provides exact amounts for the cost of filings and biometric fees, and will provide up to date fees to users on all web browsers on desktop or mobile devices.