diff --git a/lib/redmine_contracts/budget_plugin_migration.rb b/lib/redmine_contracts/budget_plugin_migration.rb
index 108ff20..c41a86b 100644
--- a/lib/redmine_contracts/budget_plugin_migration.rb
+++ b/lib/redmine_contracts/budget_plugin_migration.rb
@@ -1,7 +1,8 @@
 require 'pp'
 
 module RedmineContracts
-
+  class BudgetPluginInstalledError < StandardError; end
+  
   # TODO: decide how this is activated.
   # Have the user dump yaml themselves?  Or rename the tables and
   # SQL select the data out into yaml?
@@ -9,6 +10,20 @@ module RedmineContracts
   class BudgetPluginMigration
     @@data = nil
 
+    def self.check_for_installed_budget_plugin
+      if Redmine::Plugin.registered_plugins.keys.include?(:budget_plugin)
+        raise BudgetPluginInstalledError, "The budget plugin is still installed. Please remove it and retry the conversion"
+      end
+    end
+
+    def self.rename_old_tables
+
+    end
+
+    def self.migrate_contracts
+
+    end
+    
     def self.migrate(old_data)
       @@data = old_data
 
diff --git a/lib/tasks/budget_plugin_migration.rake b/lib/tasks/budget_plugin_migration.rake
new file mode 100644
index 0000000..cb1f0c6
--- /dev/null
+++ b/lib/tasks/budget_plugin_migration.rake
@@ -0,0 +1,9 @@
+namespace :redmine_contracts do
+  desc "Migrate data from the budget_plugin to redmine_contracts"
+  task :budget_migration => :environment do
+    RedmineContracts::BudgetPluginMigration.check_for_installed_budget_plugin
+    RedmineContracts::BudgetPluginMigration.rename_old_tables
+    RedmineContracts::BudgetPluginMigration.migrate_contracts
+    # RedmineContracts::BudgetPluginMigration.migrate
+  end
+end