diff --git a/lib/tasks/tags.rake b/lib/tasks/tags.rake
new file mode 100644
index 00000000000..c9eeed2dbfc
--- /dev/null
+++ b/lib/tasks/tags.rake
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+namespace :tags do
+  desc "remove tags with no document associated with them"
+  task detag: :environment do
+    tags_to_remove = Tag.includes(:documents_tags).where(documents_tags: { tag_id: nil })
+
+    if tags_to_remove.empty?
+      puts "All tags are associated with Documents."
+    else
+      tags_to_remove.each do |tag|
+        puts "Removing tag: #{tag.text}"
+        tag.destroy
+      end
+      puts "Tags without associated documents have been removed."
+    end
+  end
+
+  desc "merge tags where the differences are capitalization"
+  task merge: :environment do
+    tag_groups = Tag.all.group_by { |tag| tag.text.downcase }
+    tag_groups.each do |_ ,tags|
+      next if tags.length <= 1
+      first_tag = tags.shift
+      tags.each do |tag|
+        unless first_tag.documents_tags.exists?(document_id: tag.documents.pluck(:id))
+          first_tag.documents_tags << tag.documents_tags
+        end
+        tag.destroy
+      end
+    end
+    puts "Tags with capitalization differences have been merged."
+  end
+end