Sorry to post a question here but I have rang revenue and they seem clueless. I work in civil service so my tax is sorted for me generally. I have extra income dividends from 2016 I want to pay tax on. I click on paye anytime ( I'm registered) and I can enter all the details for 2016 now , I submit them to revenue but need a p60 ( that's fine I'll get it in a couple of weeks ) . The revenue guy I spoke to says your probably better off waiting till next October 2017 and filing your returns for the year 2016 then on a form 11 or form 12 . I ask him why and he says it's just better and won't "mess up your tax " he won't elaborate much more . I ask him is it ok to just use this simple form and he said yes . I am struggling to understand why there are 3 ways to enter a tax return on dividend income , id rather just do it now and enter dividends as they arrive instead of waiting for the October following year . Am I missing something ?