what is a form 12
The Form 12 is an annual Income Tax return for people whose primary sources of income are their PAYE income. If you are in receipt of any other income apart from your income earned as an employee you may have an obligation to declare this on a Form 12. You could have been chosen at random to complete a Form 12. 2  The Revenue may have obtained third party information regarding additional non-paye income such as payments from the Department of Agriculture.