Revenue has published a guide to assist individuals, who are taxed under the self-assessment system, to complete their 2009 Tax Return. For 2009, self-assessment taxpayers are required to complete either a Form 11 or the shorter version, Form 11E. The guide can be accessed on the Revenue Website or from here. Revenue has also published explanatory notes on completing the Corporation Tax Return - Form CT1 for accounting periods ending in 2010. The notes and the 2010 Form CT1 are both available here.