Question: What is the 1099 filing address for Delaware?   Answer: Paper forms (W-2, 1099, and reconciliation) should be mailed to:   State of Delaware Division of Revenue P.O. Box 8754 Wilmington, DE 19899-8754   To learn more about DE 1099 filing requirements contact James Stewart at 302-577-8170 or james.stewart@state.de.us   For more information refer to http://1099-efile.realtaxtools.com/state/Delaware/ Read more…