I sold some stock appreciation rights earlier this year, and I've received some contradictory advice concerning preliminary tax from my accountant.
The first occasion I met him he recommended I pay the preliminary tax due based on 90% of the 2017 amount due. However his office has subsequently completed my 2016 return, and have advised that I should instead pay based on a figure of 100% of the tax due for 2016. There is a significant difference between both amounts, and while it would be helpful to go with the lower 2016 figure from a cashflow standpoint, the last thing I want is to get on the wrong side of the Revenue.
Does anyone have any experience in regard to making a choice when paying preliminary tax?