In Finance Act 2012, Revenue have introduced ‘Self assessment’ for Stamp Duty for all stampable instruments effective on or after 7th July 2012.  Key changes to the system are the removal of the adjudication process and the replacement of late filing penalties with late filing surcharges. However all stampable instruments effective prior to 7th July 2012 must still be processed with Revenue under the previous system which was not based on ‘Self assessment’.