Once the LLC’s have decided formally to merge, the surviving entity must file a certificate of merger with the formation state. The entity being merged into the surviving entity no longer exists after the conclusion of this process and often is listed as “Merged Out” in the state’s data-base.
Plan of Merger
Many states require a plan of merger be filed with or as part of a certificate of merger. A plan of merger describes how the merger will take place, including how ownership interests in the second LLC (merged out LLC) will be transferred for ownership interests in the first LLC (the surviving LLC). Check with the merger state for merger filing requirements.
Two or more states
If one of your LLC's being merged is from a foreign state, then you may have to "merge out" or withdrawl from the foreign state after your merger filing has been completed. Check with the foreign state to find out what is required.