Home Unclaimed Property Reporting Your Property Reporting Your Property You can securely upload your Maryland Unclaimed Property holder report through our web portal. The web portal will validate and give you a confirmation that the upload was successful. Whether you are a first-time filer or have filed reports in the past please see our holder reporting manual for the latest instructions and guidance. Filing Deadlines for Corporations and Insurance Company Filers: Holder Type Period Ending Report and Remittance Due Corporations, Public Entities, Financial Institutions, Other June 30 October 31 All Insurance Companies December 31 April 30 File Reports Electronically Holder's Reporting Manual (pdf) FAQ's Electronic Filing Guide (pdf) First Time Filers ACH/Wire Information If you still need clarification, please contact us directly at 410-767-1700 or UPHOLDER@marylandtaxes.gov Printable Forms Voluntary Disclosure Agreement New Holder Information Form Unclaimed Property Report ST917 Unclaimed Property Report ST918 Unclaimed Property Report ST919